ORCID Profile
0000-0003-1155-6082
Current Organisation
Wenzhou University
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Materials Engineering | Materials Engineering not elsewhere classified | Chemical Engineering not elsewhere classified | Electrochemistry | Physical Organic Chemistry | Functional Materials | Energy Generation, Conversion and Storage Engineering |
Energy Storage (excl. Hydrogen) | Energy Storage, Distribution and Supply not elsewhere classified | Energy Transformation not elsewhere classified | Environmentally Sustainable Energy Activities not elsewhere classified
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2SC06276C
Abstract: In order to improve the critical issues of Zn dendritic in zinc-ion batterie, we investigate herein a hybrid electrolyte with PAN-DMSO-H 2 O. With the synergistic effects of PAN and DMSO, a uniform, smooth and dendrite-free Zn anode could be obtained.
Publisher: Wiley
Date: 14-02-2019
Publisher: Elsevier BV
Date: 02-2016
Publisher: Wiley
Date: 18-02-2019
Abstract: Sodium-ion batteries (SIBs) are attracting increasing attention and considered to be a low-cost complement or an alternative to lithium-ion batteries (LIBs), especially for large-scale energy storage. Their application, however, is limited because of the lack of suitable host materials to reversibly intercalate Na
Publisher: Elsevier BV
Date: 11-2017
Publisher: Research Square Platform LLC
Date: 16-09-2020
DOI: 10.21203/RS.3.RS-74647/V1
Abstract: Sodium-oxygen batteries have been regarded as promising energy storage devices due to their low overpotential and high energy density. Its applications, however, still face formidable challenges due to the lack of understanding about the influence of electrocatalysts on discharge products. Here, a phosphorous and nitrogen dual-doped carbon (PNDC) based cathode is synthesized to increase the electrocatalytic activity and to stabilize the NaO2 nanoparticle discharge products, leading to enhanced cycling stability when compared with the nitrogen-doped carbon (NDC). The PNDC air cathode exhibits a quite low overpotential (0.36 V) and long cycling stability for 120 cycles. The reversible formation/decomposition and stabilize ability of NaO2 discharge products are clearly proven by in-situ synchrotron X-ray diffraction and ex-situ X-ray diffraction. Based on the density functional theory calculation, the PNDC has much stronger adsorption energy (-2.85 eV) for NaO2 than that of NDC (-1.80 eV), which could efficiently stabilize the NaO2 discharge products.
Publisher: Elsevier BV
Date: 11-2020
Publisher: Wiley
Date: 11-07-2019
Publisher: Elsevier BV
Date: 09-2020
Publisher: Wiley
Date: 25-02-2020
Publisher: Wiley
Date: 10-07-2019
Abstract: Both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) are crucial to water splitting, but require alternative active sites. Now, a general π‐electron‐assisted strategy to anchor single‐atom sites (M=Ir, Pt, Ru, Pd, Fe, Ni) on a heterogeneous support is reported. The M atoms can simultaneously anchor on two distinct domains of the hybrid support, four‐fold N/C atoms (M@NC), and centers of Co octahedra (M@Co), which are expected to serve as bifunctional electrocatalysts towards the HER and the OER. The Ir catalyst exhibits the best water‐splitting performance, showing a low applied potential of 1.603 V to achieve 10 mA cm −2 in 1.0 m KOH solution with cycling over 5 h. DFT calculations indicate that the Ir@Co (Ir) sites can accelerate the OER, while the Ir@NC 3 sites are responsible for the enhanced HER, clarifying the unprecedented performance of this bifunctional catalyst towards full water splitting.
Publisher: Elsevier BV
Date: 05-2019
Publisher: Wiley
Date: 22-05-2019
Publisher: Wiley
Date: 13-11-2018
Publisher: Research Square Platform LLC
Date: 05-04-2021
DOI: 10.21203/RS.3.RS-361418/V1
Abstract: To reach a closed-loop material system and meet the urgent requirement of sustainable energy storage technologies, it is essential to incorporate efficient waste management into designing new energy storage materials. Here, we reported a “two birds with one stone” strategy to transform rusty iron products into Prussian blue as high-performance cathode materials and recover the rusty iron products to their original status. Owing to the high crystalline and Na + content, the rusty iron derived Prussian blue shows a high specific capacity of 145 mAh g − 1 and excellent cycling stability over 3500 cycles. Through the in situ X-ray diffraction and in situ Raman spectra, it is found that the impressive ion storage capability and stability are greatly related to the suppressed structure distortion during the charge/discharge process. The ions migration mechanism and possibility as universal host of other kinds of ions are further illuminated by density functional theory calculations. This work provides a new strategy for recycling wasted materials into high value-added materials for sustainable battery systems, and is adaptable in the nanomedicine, catalysis, sensors, and gas storage applications.
Publisher: American Chemical Society (ACS)
Date: 05-04-2021
Publisher: Wiley
Date: 02-11-2016
Publisher: Elsevier BV
Date: 07-2014
Publisher: Elsevier BV
Date: 11-2008
Publisher: Elsevier BV
Date: 02-2008
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5QI00237K
Abstract: MoS 2 without carbon modification has achieved a long cycling performance by cutting off the terminal discharge voltage to preserve a layered structure.
Publisher: Wiley
Date: 08-07-2022
Abstract: Sodium‐ion oxide cathodes with triphase heterostructures have attracted intensive attention, since the sodium‐storage performance can be enhanced by utilizing the synergistic effect of different phases. However, the composite structures generally suffer from multiple irreversible phase transitions and high lattice strain because of interlayer‐gliding during the charge/discharge process. Here, the concept of strain engineering via manipulating the local chemistry of heterostructured oxide cathode is proposed to regulate the relevant physical and chemical properties, resulting in highly reversible structural evolution (P2/P3/spinel → P2/P3″/spinel) and low intrinsic stress in the potential window of 1.5–4.0 V. Also, the simple structural evolution at a relatively high cut‐off potential of 4.3 V can be detected by in situ X‐ray diffraction and other electrochemical characterization techniques during Na + extraction/insertion. Meanwhile, the electrode exhibits a high reversible capacity (169.4 mAh g −1 at 0.2 C) and excellent rate performance from 1.5 to 4.3 V. Overall, this study reveals the mechanisms of regulating local chemistry to realize strain engineering of the cathode materials and paves the way for the further improvement of high‐performance sodium‐ion batteries.
Publisher: Wiley
Date: 31-03-2020
Publisher: Wiley
Date: 07-01-2022
Abstract: The exploration of high‐efficiency and inexpensive electrocatalysts for oxygen reduction reaction (ORR) is of critical significance for renewable energy conversion. Herein, an in situ catalytic transformation strategy toward a unique hierarchical nanostructure is reported. In the architecture, Co nanoparticles encapsulated at the tip of bamboo‐like N‐doped carbon nanotubes (NCNTs) are grafted on N‐doped polypyrrole‐derived CNTs. Thanks to the smart design of unique 3D architecture, the NPCN@Co‐NCNTs catalyst displays an extraordinary ORR activity in 0.1 m KOH solution (the onset and half‐wave potentials are 0.96 and 0.90 V vs RHE, respectively), which is similar to commercial Pt/C catalyst (0.99 and 0.88 V vs RHE, respectively). Meanwhile, the catalyst shows the low Tafel slope of 78 mV dec −1 and long‐time stability. Experimental and theoretical results verify that the improved ORR performance is mainly related to the existence of Co nanoparticles protected by pyridinic‐N‐doped carbon, which lowers the theoretical overpotential of ORR. Density functional theory calculations reveal that Pyridinic‐NCCo site is the reactive site with the lowest overpotential for ORR (0.57 V). These results unambiguously indicate that the NPCN@Co‐NCNTs represent a low‐cost yet high‐efficiency electrocatalyst for the electrocatalytic ORR.
Publisher: Wiley
Date: 04-09-2021
Abstract: Silicon is considered the most promising candidate for anode material in lithium‐ion batteries due to the high theoretical capacity. Unfortunately, the vast volume change and low electric conductivity have limited the application of silicon anodes. In the silicon anode system, the binders are essential for mechanical and conductive integrity. However, there are few reviews to comprehensively introduce binders from the perspective of factors affecting performance and modification methods, which are crucial to the development of binders. In this review, several key factors that have great impact on binders’ performance are summarized, including molecular weight, interfacial bonding, and molecular structure. Moreover, some commonly used modification methods for binders are also provided to control these influencing factors and obtain the binders with better performance. Finally, to overcome the existing problems and challenges about binders, several possible development directions of binders are suggested.
Publisher: Wiley
Date: 24-05-2023
Abstract: Prussian blue analogues (PBAs) have been regarded as promising cathode materials for alkali‐ion batteries owing to their high theoretical energy density and low cost. However, the high water and vacancy content of PBAs lower their energy density and bring safety issues, impeding their large‐scale application. Herein, a facile “potassium‐ions assisted” strategy is proposed to synthesize highly crystallized PBAs. By manipulating the dominant crystal plane and suppressing vacancies, the as‐prepared PBAs exhibit increased redox potential resulting in high energy density up to ≈450 Wh kg −1 , which is at the same level of the well‐known LiFePO 4 cathodes for lithium‐ion batteries. Remarkably, unconventional highly‐reversible phase evolution and redox‐active pairs were identified by multiple in situ techniques for the first time. The preferred guest‐ion storage sites and migration mechanism were systematically analysed through theoretical calculations. We believe these results could inspire the design of safe with high energy density.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA00153C
Abstract: This study employed a conductive carbon grown in situ to obtain an NVP@C composite with a pomegranate-like structure, which exhibited excellent rate performance.
Publisher: Springer Science and Business Media LLC
Date: 04-05-2021
DOI: 10.1007/S40820-021-00648-W
Abstract: This work reports influence of two different electrolytes, carbonate ester and ether electrolytes, on the sulfur redox reactions in room-temperature Na–S batteries. Two sulfur cathodes with different S loading ratio and status are investigated. A sulfur-rich composite with most sulfur dispersed on the surface of a carbon host can realize a high loading ratio (72% S). In contrast, a confined sulfur s le can encapsulate S into the pores of the carbon host with a low loading ratio (44% S). In carbonate ester electrolyte, only the sulfur trapped in porous structures is active via ‘solid–solid’ behavior during cycling. The S cathode with high surface sulfur shows poor reversible capacity because of the severe side reactions between the surface polysulfides and the carbonate ester solvents. To improve the capacity of the sulfur-rich cathode, ether electrolyte with NaNO 3 additive is explored to realize a ‘solid–liquid’ sulfur redox process and confine the shuttle effect of the dissolved polysulfides. As a result, the sulfur-rich cathode achieved high reversible capacity (483 mAh g −1 ), corresponding to a specific energy of 362 Wh kg −1 after 200 cycles, shedding light on the use of ether electrolyte for high-loading sulfur cathode.
Publisher: Wiley
Date: 05-2023
Abstract: The development of large‐scale energy storage systems (ESSs) aimed at application in renewable electricity sources and in smart grids is expected to address energy shortage and environmental issues. Sodium‐ion batteries (SIBs) exhibit remarkable potential for large‐scale ESSs because of the high richness and accessibility of sodium reserves. Using low‐cost and abundant elements in cathodes with long cycling stability is preferable for lowering expenses on cathodes. Many investigated cathodes for SIBs are dogged by structural and morphology changes, unstable interphases between the cathode and the electrolyte, and air sensitivity, causing unsatisfactory cycling performance. Therefore, understanding the mechanism of capacity degeneration in depth and developing precise solutions are critical for designing low‐cost cathodes that are highly stable under cycling. Herein, recent progress in long‐cycle‐life and low‐cost cathodes for SIBs is focused on, and a comprehensive discussion of the key points in SIBs toward large‐scale applications is provided. The roots of the unstable cycling performance of low‐cost cathodes are discussed. Also, effective strategies are summarized from the recent progress on long‐cycle‐life and low‐cost cathodes. This review is expected to encourage deeper investigation of long‐lifespan cathodes for SIBs, particularly for potential large‐scale industrialization.
Publisher: Wiley
Date: 11-12-2020
Abstract: Mn‐based hexacyanoferrate Na x MnFe(CN) 6 (NMHFC) has been attracting more attention as a promising cathode material for sodium ion storage owing to its low cost, environmental friendliness, and its high voltage plateau of 3.6 V, which comes from the Mn 2+ /Mn 3+ redox couple. In particular, the Na‐rich NMHFC ( x 1.40) with trigonal phase is considered an attractive candidate due to its large capacity of ≈130 mAh g −1 , delivering high energy density. Its unstable cycle life, however, is holding back its practical application due to the dissolution of Mn 2+ and the trigonal‐cubic phase transition during the charge–discharge process. Here, a novel hexacyanoferrate (Na 1.60 Mn 0.833 Fe 0.167 [Fe(CN) 6 ], NMFHFC‐1) with Na‐rich cubic structure and dual‐metal active redox couples is developed for the first time. Through multiple structural modulation, the stress distortion is minimized by restraining Mn 2+ dissolution and the trigonal‐cubic phase transition, which are common issues in manganese‐based hexacyanoferrate. Moreover, NMFHFC‐1 simultaneously retains an abundance of Na ions in the framework. As a result, Na 1.60 Mn 0.833 Fe 0.167 [Fe(CN) 6 ] electrode delivers high energy density (436 Wh kg −1 ) and excellent cycle life (80.2% capacity retention over 300 cycles), paving the way for the development of novel commercial cathode materials for sodium ion storage.
Publisher: Wiley
Date: 10-06-2021
Abstract: Research on aqueous zinc‐ion batteries is still in its initial stages owing to the limited choice of cathode materials, especially those having tunnel structures with high capacity and fast kinetics. Furthermore, their zinc ion storage mechanisms are not well established as yet. Here, a novel in situ electrochemical lattice distortion of vanadium trioxide (V 2 O 3 ) is demonstrated. The obtained defect‐rich V 2 O 3 is applied as a cathode for ultrafast Zn 2+ storage. Operando X‐ray diffraction and operando Raman spectroscopy corroborate the unique lattice conversion reaction of V 2 O 3 during the initial charging process. Transmission electron microscopy and X‐ray photoelectron spectroscopy further demonstrate the stability of the main crystal planes of V 2 O 3 during the initial lattice distortion and subsequent zinc ion storage processes. This unique in situ electrochemical lattice conversion reaction allows V 2 O 3 to achieve a high capacity of 382.5 mAh g −1 , remarkable rate performance (154.3 mAh g −1 at 51.2 A g −1 ), and high energy and power densities (139 Wh kg −1 at 46 KW kg −1 ), revealing the potential of tunnel‐type cathodes via an in situ electrochemical lattice distortion reaction to achieve ultrafast zinc ion storage with high capacity.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA01615E
Abstract: In this work, we have used the electrospinning method to successfully fabricate mesoporous S/N-doped carbon nanofibers (S/N-C), which show a high capacity and high-rate capability in a Na-ion battery. The S/N-C nanofibers delivered a high reversible capacity of 552.5 and 355.3 mA h g −1 at 0.1 and 5 A g −1 , respectively.
Publisher: Wiley
Date: 28-01-2019
Publisher: Wiley
Date: 31-03-2020
Publisher: Wiley
Date: 28-10-2021
Abstract: The great demand for high-energy-density batteries has driven intensive research on the Li-S battery due to its high theoretical energy density. Consequently, considerable progress in Li-S batteries is achieved, although the lithium anode material is still challenging in terms of lithium dendrites and its unstable interface with electrolyte, impeding the practical application of the Li-S battery. Li
Publisher: American Chemical Society (ACS)
Date: 31-08-2010
DOI: 10.1021/JP1063403
Publisher: Springer Science and Business Media LLC
Date: 28-10-2015
DOI: 10.1038/NCOMMS9689
Abstract: Sodium–metal sulfide battery holds great promise for sustainable and cost-effective applications. Nevertheless, achieving high capacity and cycling stability remains a great challenge. Here, uniform yolk-shell iron sulfide–carbon nanospheres have been synthesized as cathode materials for the emerging sodium sulfide battery to achieve remarkable capacity of ∼545 mA h g −1 over 100 cycles at 0.2 C (100 mA g −1 ), delivering ultrahigh energy density of ∼438 Wh kg −1 . The proven conversion reaction between sodium and iron sulfide results in high capacity but severe volume changes. Nanostructural design, including of nanosized iron sulfide yolks (∼170 nm) with porous carbon shells (∼30 nm) and extra void space (∼20 nm) in between, has been used to achieve excellent cycling performance without sacrificing capacity. This sustainable sodium–iron sulfide battery is a promising candidate for stationary energy storage. Furthermore, this spatially confined sulfuration strategy offers a general method for other yolk-shell metal sulfide–carbon composites.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1QM01639C
Abstract: This work advances on the microstructure design and the growth mechanism of porous-shell hollow CaWO 4 microspheres with a deep discussion on the origin of enhanced photoluminescence.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC90084K
Abstract: Correction for ‘A new, cheap, and productive FeP anode material for sodium-ion batteries’ by Wei-Jie Li et al. , Chem. Commun. , 2015, DOI: 10.1039/c4cc09604e.
Publisher: Wiley
Date: 22-06-2022
Abstract: Prussian blue analogues (PBAs) have attracted extensive attention as cathode materials in sodium-ion batteries (SIBs) due to their low cost, high theoretical capacity, and facile synthesis process. However, it is of great challenge to control the crystal vacancies and interstitial water formed during the aqueous co-precipitation method, which are also the key factors in determining the electrochemical performance. Herein, an antioxidant and chelating agent co-assisted non-aqueous ball-milling method to generate highly-crystallized Na
Publisher: Wiley
Date: 24-05-2023
Abstract: Prussian blue analogues (PBAs) have been regarded as promising cathode materials for alkali‐ion batteries owing to their high theoretical energy density and low cost. However, the high water and vacancy content of PBAs lower their energy density and bring safety issues, impeding their large‐scale application. Herein, a facile “potassium‐ions assisted” strategy is proposed to synthesize highly crystallized PBAs. By manipulating the dominant crystal plane and suppressing vacancies, the as‐prepared PBAs exhibit increased redox potential resulting in high energy density up to ≈450 Wh kg −1 , which is at the same level of the well‐known LiFePO 4 cathodes for lithium‐ion batteries. Remarkably, unconventional highly‐reversible phase evolution and redox‐active pairs were identified by multiple in situ techniques for the first time. The preferred guest‐ion storage sites and migration mechanism were systematically analysed through theoretical calculations. We believe these results could inspire the design of safe with high energy density.
Publisher: American Chemical Society (ACS)
Date: 19-10-2021
DOI: 10.1021/JACS.1C06727
Publisher: Springer Science and Business Media LLC
Date: 29-08-2014
DOI: 10.1038/SREP06095
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CC00402C
Abstract: This review summarizes the recent developments of CNSs synthesis and applications for rechargeable batteries, which could help researchers design high performance electrode materials for advanced batteries.
Publisher: American Chemical Society (ACS)
Date: 07-05-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1SC04202E
Abstract: This review summarizes the recent progress of alkali and alkaline-earth metal ion–solvent co-intercalation reactions in nonaqueous rechargeable batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA07101K
Abstract: The ultrastable VO 2 · x H 2 O nanobelt with crystal water has been prepared successfully by a simple and easy large-scale hydrothermal method as cathode materials for aqueous zinc-ion batteries with ultra-high reversible capacity and rate capability.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0QM00483A
Abstract: A flexible and robust 3D nickel@carbon nanofiber electrode was prepared via modified NIPS-powder metallurgy and CVD method. 3D porous nickel membrane provides more active catalysis sites and confined space for the growth of carbon nanofibers.
Publisher: American Chemical Society (ACS)
Date: 27-05-2020
Publisher: Wiley
Date: 22-08-2017
Publisher: Wiley
Date: 10-11-2021
Abstract: Developing efficient cathode catalysts can largely promote the application of Li‐O 2 batteries (LOBs). In this work, the core‐shell MoS 2− x @CNTs composite is synthesized via a hydrothermal method with annealing and NaBH 4 reduction post‐processing, of which the defective MoS 2 nanoflakes are homogeneously coated on the 3D carbon nanotube (CNT) webs. It is found that it delivers superior bifunctional catalytic activities toward both oxygen reduction and evolution reactions for LOBs. On the one hand, the charge re‐distribution on MoS 2 nanoflakes with sulfur vacancies can be effectively constructed by the surface engineering strategy, remarkably boosting the kinetics of Li‐O 2 catalysis. On the other hand, the conductive and high surface area CNT network can facilitate mass transfer and provide enough free space for composite cathodes, accommodating the volume changes caused by the reversible formation and decomposition of discharge products during cycling. More importantly, the unique core‐shell architecture can not only enable fully covering of defective MoS 2 nanoflakes on CNT surfaces to avoid the contact between CNTs and electrolyte, distinctly suppressing side reactions, but also realize the exposure of more active sites to fulfill their catalytic properties. This work provides an insightful investigation on advanced catalysts and holds great potential for catalyst structural engineering in LOBs.
Publisher: Elsevier BV
Date: 2016
Publisher: Springer Science and Business Media LLC
Date: 04-2019
DOI: 10.1038/S41467-019-09170-5
Abstract: The development of low-cost and long-lasting all-climate cathode materials for the sodium ion battery has been one of the key issues for the success of large-scale energy storage. One option is the utilization of earth-abundant elements such as iron. Here, we synthesize a NASICON-type tuneable Na 4 Fe 3 (PO 4 ) 2 (P 2 O 7 )/C nanocomposite which shows both excellent rate performance and outstanding cycling stability over more than 4400 cycles. Its air stability and all-climate properties are investigated, and its potential as the sodium host in full cells has been studied. A remarkably low volume change of 4.0% is observed. Its high sodium diffusion coefficient has been measured and analysed via first-principles calculations, and its three-dimensional sodium ion diffusion pathways are identified. Our results indicate that this low-cost and environmentally friendly Na 4 Fe 3 (PO 4 ) 2 (P 2 O 7 )/C nanocomposite could be a competitive candidate material for sodium ion batteries.
Publisher: Elsevier BV
Date: 09-2022
Publisher: Springer Science and Business Media LLC
Date: 13-11-2014
DOI: 10.1038/SREP07030
Publisher: American Chemical Society (ACS)
Date: 17-07-2017
Abstract: Room-temperature sodium-sulfur batteries are competitive candidates for large-scale stationary energy storage because of their low price and high theoretical capacity. Herein, pure S nanosheet cathodes can be grown in situ on three-dimensional Cu foam substrate with the condensation between binary polymeric binders, serving as a model system to investigate the formation and electrochemical mechanism of unique S nanosheets on the Cu current collectors. On the basis of the confirmed conversion reactions to Na
Publisher: American Chemical Society (ACS)
Date: 10-06-2021
Publisher: Elsevier BV
Date: 04-2021
Publisher: Elsevier BV
Date: 03-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA03089A
Abstract: A novel high-voltage cathode material Na 6 Fe 5 (SO 4 ) 8 (NFS) is successfully prepared for sodium-ion batteries for the first time. It is found that the NFS cathode shows a high working voltage of 3.7 V, together with an attractive energy density approaching 450 W h kg −1 . And, based on an NFS@5%CNTs cathode and hard carbon (HC) anode, a full NFS@5%CNTs//HC cell can deliver an impressive energy density approaching 350 W h kg −1 and excellent cycling stability over 1000 cycles at 2C.
Publisher: Wiley
Date: 21-11-2021
Abstract: The investigation of novel growth mechanisms for electrodes and the understanding of their in situ energy storage mechanisms remains major challenges in rechargeable lithium‐ion batteries. Herein, a novel mechanism for the growth of high‐purity ersified Li 3 VO 4 nanostructures (including hollow nanospheres, uniform nanoflowers, dispersed hollow nanocubes, and ultrafine nanowires) has been developed via a microwave irradiation strategy. In situ synchrotron X‐ray diffraction and in situ transmission electron microscope observations are applied to gain deep insight into the intermediate Li 3+ x VO 4 and Li 3+ y VO 4 phases during the lithiation/delithiation mechanism. The first‐principle calculations show that lithium ions migrate into the nanosphere wall rapidly along the (100) plane. Furthermore, the Li 3 VO 4 hollow nanospheres deliver an outstanding reversible capacity (299.6 mAh g −1 after 100 cycles) and excellent cycling stability (a capacity retention of 99.0% after 500 cycles) at 200 mA g −1 . The unique nanostructure offers a high specific surface area and short diffusion path, leading to fast thermal/kinetic reaction behavior, and preventing undesirable volume expansion during long‐term cycling.
Publisher: Springer Science and Business Media LLC
Date: 11-04-2016
DOI: 10.1038/SREP23515
Abstract: The heteroaromatic organic compound, N,N’ -diphenyl-1,4,5,8-naphthalenetetra- carboxylic diimide (DP-NTCDI-250) as the cathode material of lithium batteries is prepared through a simple one-pot N -acylation reaction of 1,4,5,8-naphthalenetetra-carboxylic dianhydride (NTCDA) with phenylamine (PA) in DMF solution followed by heat treatment in 250 °C. The as prepared s le is characterized by the combination of elemental analysis, NMR, FT-IR, TGA, XRD, SEM and TEM. The electrochemical measurements show that DP-NTCDI-250 can deliver an initial discharge capacity of 170 mAh g −1 at the current density of 25 mA g −1 . The capacity of 119 mAh g −1 can be retained after 100 cycles. Even at the high current density of 500 mA g −1 , its capacity still reaches 105 mAh g −1 , indicating its high rate capability. Therefore, the as-prepared DP-NTCDI-250 could be a promising candidate as low cost cathode materials for lithium batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1CC06898A
Abstract: Two-dimensional calcium terephthalate flakes with a thickness of 100-300 nm have been synthesized
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA00882A
Abstract: A two-step hydrothermal surface engineering strategy was used to tune the concentration of oxygen vacancies of CeO 2 nanorods to achieve the best electrochemical performances of Li–O 2 batteries, which reduced the overpotential and extended the electrochemical stability of Li–O 2 batteries.
Publisher: Wiley
Date: 11-08-2020
Publisher: Wiley
Date: 15-02-2019
Abstract: Structural modulation and surface engineering have remarkable advantages for fast and efficient charge storage. Herein, we present a phosphorus modulation strategy which simultaneously realizes surface structural disorder with interior atomic-level P-doping to boost the Na
Publisher: Wiley
Date: 04-10-2020
Publisher: Elsevier BV
Date: 31-12-2008
Publisher: Elsevier BV
Date: 02-2009
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2SC04945G
Abstract: This review provides a comprehensive summary of the research progress of Zn anodes, including the main challenges of Zn metal anodes, the corresponding optimization strategies, and the perspectives for practical aqueous Zn-ion batteries.
Publisher: Springer Science and Business Media LLC
Date: 30-01-2015
DOI: 10.1038/SREP08012
Publisher: Elsevier BV
Date: 02-2016
Publisher: The Electrochemical Society
Date: 2008
DOI: 10.1149/1.2988739
Publisher: Wiley
Date: 29-07-2022
Abstract: Transition metal phosphides (TMPs) are perplexed by the low electronic/ionic conductivity, volume variations, and unstable reaction interfaces. To tackle these issues, herein, we have proposed a low‐temperature phosphorization strategy by reactions between Co‐based metal‐organic frameworks (MOF) and sodium dihydric hypophosphite to encapsulate monodisperse CoP nanoparticle (∼12 nm) into MOF‐derived hollow and porous carbon nanobox (CoP@PCB). Compared to bare CoP, such CoP@PCB electrode has shown remarkable electrochemical performance, which is highly ascribed to its robust structural feature, pre‐reserved voids, monodisperse CoP nanoparticles, and stable reaction interfaces, as well as fast reaction kinetics. Moreover, the good electrochemical properties of CoP@PCB//LiFePO 4 full cells have demonstrated practical possibility. The formation of Co and Li 3 P as discharged products has corroborated the redox conversion reaction mechanism, as assessed by in‐situ X‐ray diffractions. The favorable function of the carbon shell in boosting both electronic conductivity and lowering diffusion energy barriers has been confirmed by theoretical calculations, demonstrating an important synergistic effect.
Publisher: Wiley
Date: 06-03-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CC04563F
Abstract: The challenges faced by binders can be addressed by enhancing the mechanical and chemical bonding strength, designing multifunctional integrated binders, and combining advanced characterization techniques.
Publisher: Wiley
Date: 23-06-2017
Abstract: Rechargeable sodium-ion batteries (SIBs), as the most promising alternative to commercial lithium-ion batteries, have received tremendous attention during the last decade. Among all the anode materials for SIBs, metal sulfides/selenides (MXs) have shown inspiring results because of their versatile material species and high theoretical capacity. They suffer from large volume expansion, however, which leads to bad cycling performance. Thus, methods such as carbon modification, nanosize design, electrolyte optimization, and cut-off voltage control are used to obtain enhanced performance. Here, recent progress on MXs is summarized in terms of arranging the crystal structure, synthesis methods, electrochemical performance, mechanisms, and kinetics. Challenges are presented and effective ways to solve the problems are proposed, and a perspective for future material design is also given. It is hoped that light is shed on the development of MXs to help finally find applications for next-generation rechargeable batteries.
Publisher: Wiley
Date: 07-07-2017
Abstract: The most promising cathode materials, including LiCoO 2 (layered), LiMn 2 O 4 (spinel), and LiFePO 4 (olivine), have been the focus of intense research to develop rechargeable lithium‐ion batteries (LIBs) for portable electronic devices. Sluggish lithium diffusion, however, and unsatisfactory long‐term cycling performance still limit the development of present LIBs for several applications, such as plug‐in/hybrid electric vehicles. Motivated by the success of graphene and novel 2D materials with unique physical and chemical properties, herein, a simple shear‐assisted mechanical exfoliation method to synthesize few‐layered nanosheets of LiCoO 2 , LiMn 2 O 4 , and LiFePO 4 is used. Importantly, these as‐prepared nanosheets with preferred orientations and optimized stable structures exhibit excellent C‐rate capability and long‐term cycling performance with much reduced volume expansion during cycling. In particular, the zero‐strain insertion phenomenon could be achieved in 2–3 such layers of LiCoO 2 electrode materials, which could open up a new way to the further development of next‐generation long‐life and high‐rate batteries.
Publisher: Wiley
Date: 27-04-2016
Abstract: Pt-Gd alloy polycrystalline thin film is deposited on 3D nickel foam by pulsed laser deposition method serving as a whole binder/carbon-free air electrode, showing great catalytic activity enhancement as an efficient bifunctional catalyst for the oxygen reduction and evolution reactions in lithium oxygen batteries. The porous structure can facilitate rapid O2 and electrolyte diffusion, as well as forming a continuous conductive network throughout the whole energy conversion process. It shows a favorable cycle performance in the full discharge/charge model, owing to the high catalytic activity of the Pt-Gd alloy composite and 3D porous nickel foam structure. Specially, excellent cycling performance under capacity limited mode is also demonstrated, in which the terminal discharge voltage is higher than 2.5 V and the terminal charge voltage is lower than 3.7 V after 100 cycles at a current density of 0.1 mA cm(-2) . Therefore, this electrocatalyst is a promising bifunctional electrocatalyst for lithium oxygen batteries and this depositing high-efficient electrocatalyst on porous substrate with polycrystalline thin film by pulsed laser deposition is also a promising technique in the future lithium oxygen batteries research.
Publisher: Wiley
Date: 10-12-2016
Abstract: Graphite-nanoplate-coated Bi2 S3 composite (Bi2 S3 @C) has been prepared by a simple, scalable, and energy-efficient precipitation method combined with ball milling. The Bi2 S3 @C composite was used as the cathode material for sodium-sulfide batteries. It delivered an initial capacity of 550 mAh g(-1) and high stable specific energy in the range of 275-300 Wh kg(-1) at 0.1 C, with an enhanced capacity retention of 69 % over 100 cycles. The unique structure demonstrates superior cycling stability, with a capacity drop of 0.3 % per cycle over 100 cycles, compared with that of bare Bi2 S3 . The sodium storage mechanism of Bi2 S3 was investigated based on ex situ X-ray diffraction and scanning transmission electron microscopy.
Publisher: Elsevier BV
Date: 03-2021
Publisher: American Chemical Society (ACS)
Date: 07-10-2016
Abstract: The exploration of highly efficient catalysts for the oxygen reduction reaction to improve sluggish kinetics still remains a great challenge for advanced energy conversion and storage in metal/air batteries. In this work, ultrafine Mn
Publisher: American Chemical Society (ACS)
Date: 17-10-2022
Abstract: Increasing generation of permanent magnet waste has resulted in an urgent need to preserve finite resources. Reforming these wastes as feedstock to produce renewables is an ideal strategy for addressing waste and energy challenges. Herein, our work reports a smart and sustainable strategy to convert iron in magnet wastes into Prussian blue analogues that can serve as cathode materials for sodium-ion batteries. Moreover, a method to control feed rates is proposed to generate high-quality materials with fewer [Fe(CN)
Publisher: Wiley
Date: 17-05-2023
Abstract: Sodium‐ion batteries (SIBs) with wide operating temperature are regarded as promising candidates for large‐scale energy storage systems. However, SIBs operating under elevated temperature aggravate the electrolyte decomposition with unstable cathode‐electrolyte interphase (CEI), causing a rapid capacity degradation. Herein, anion receptor tris(pentafluorophenyl)borane (TPFPB) is selected as electrolyte additive to construct robust NaF‐rich CEI. The strong interactions between anion and TPFPB via the electron‐deficient boron atoms weaken ClO 4 − solvation and promote the coordination capability between solvents and Na + cations, demonstrating greatly improved oxidative stability. Na 3 V 2 (PO 4 ) 3 cathode in TPFPB‐containing electrolyte delivers long‐term stability with a capacity retention of 86.9% after 100 cycles at a high cut‐off voltage of 4.2 V (vs. Na + /Na) and a high temperature of 60 °C. Besides, TPFPB also works well with enhanced performance over a temperature range from −30 to 60 °C. This study proposes a prospective method by manipulating the solvation chemistry for constructing high‐temperature rechargeable SIBs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE01349A
Abstract: Room-temperature sodium–sulfur (RT Na–S) batteries combine abundant natural resources, low cost, and outstanding energy density, thus attracting much research attention.
Publisher: Wiley
Date: 30-08-2019
Publisher: Elsevier BV
Date: 02-2010
Publisher: Springer Science and Business Media LLC
Date: 12-07-2011
Publisher: Wiley
Date: 14-04-2014
Abstract: Sn4+x P3 @ amorphous Sn-P composites are a promising cheap anode material for sodium-ion batteries with high capacity (502 mA h g(-1) at a current density of 100 mA g(-1)), long cycling stability (92.6% capacity retention up to 100 cycles), and high rate capability (165 mA h g(-1) at the 10C rate).
Publisher: The Electrochemical Society
Date: 2009
DOI: 10.1149/1.3154513
Publisher: Wiley
Date: 25-07-2018
Publisher: Wiley
Date: 24-04-2022
Abstract: High energy density and long‐term cycling stability are crucial factors for the commercialization of sodium batteries in large scale. In this regard, cathode materials that can operate at high voltage have attracted great interest owing to their high energy density. However, traditional electrolytes cannot be used in high‐voltage sodium batteries due to their limited oxidative stability. Therefore, there is a great challenge to develop appropriate electrolytes for high‐voltage cathode materials. Herein, a diluted fluoroethylene carbonate (FEC)‐based electrolyte (1 m NaPF 6 in FEC/DMC = 2/8 by volume) is designed for Na 4 Co 3 (PO 4 ) 2 P 2 O 7 (NCPP) cathode with a high operation voltage of 4.7 V to achieve superior electrochemical performance with a capacity retention of 90.10% after 500 cycles at 0.5 C and capacity retention of 89.99% after 1000 cycles at 1 C. The excellent electrochemical performance of the NCPP||Na cells can be attributed to the formation of inorganic and robust NaF‐rich cathode electrolyte interphase and F‐rich solid electrolyte interface on high voltage NCPP cathode and Na metal anode, respectively. This work points out a very promising strategy to develop high‐voltage sodium batteries toward practical applications.
Publisher: Wiley
Date: 26-05-2023
Abstract: Given the merits of affordable cost, superior low‐temperature performance, and advanced safe properties, sodium‐ion batteries (SIBs) have exhibited great development potential in large scale energy storage applications. Among various emerging carbonaceous anode materials applied for SIBs, hard carbon (HC) has recently gained significant attention regarding their relatively low cost, wide availability, and optimal overall performance. However, the insufficient initial Coulombic efficiency (ICE) of HC is the main bottlenecks, which is inevitably hindering their further commercial applications. Herein, an in‐depth holistic exposition about the reasons causing the unsatisfied ICE and the recent advances on effective improvement strategies are comprehensively summarized in this review, which have been ided into two aspects including the intrinsic property (degree of graphitization, pore structure, defect, et al.) and the extrinsic factor (electrolyte, electrode materials, et al.). In addition, future prospects and perspectives on HC to enable practical application in SIBs are also briefly outlined.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B922237E
Publisher: Wiley
Date: 24-09-2015
Abstract: Porous AgPd-Pd composite nanotubes (NTs) are used as an efficient bifunctional catalyst for the oxygen reduction and evolution reactions in lithium-oxygen batteries. The porous NT structure can facilitate rapid O2 and electrolyte diffusion through the NTs and provide abundant catalytic sites, forming a continuous conductive network throughout the entire energy conversion process, with excellent cycling performance.
Publisher: Wiley
Date: 23-04-2019
Abstract: The unstable mechanical properties of flexible transparent conductive films (TCFs) make it difficult for them to meet the requirements for displays or wearable devices. Here, the relationship between the mechanism behind the bending behavior and the electrical properties, which is important for improving the mechanical stability of flexible TCFs, is explored. Flexible TCFs are reported based on silver nanowires (AgNWs) and bio-based poly(ethylene-co-1,4-cyclohexanedimethylene 2,5-furandicarboxylate)s (PECFs), with a low sheet resistance (23.8 Ω sq
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8QI00374B
Abstract: A thin bicomponent layer with GO and Super P enhances electroactive cathode material utilization for stable lithium organic batteries.
Publisher: Wiley
Date: 26-05-2020
Publisher: American Chemical Society (ACS)
Date: 08-06-2018
Abstract: The surfactant-assisted liquid-phase exfoliation of expanded graphite can produce graphene sheets in large quantities with minimal defects. However, it is difficult to completely remove the surfactant from the final product, thus affecting the electrochemical properties of the produced graphene. In this article, a novel approach to fabricate flexible graphene olypyrrole film was developed: using surfactant cetyltrimethylammonium bromide as a template for growth of polypyrrole nanofibers (PPyNFs) instead of removal after the exfoliation process followed by a simple filtration method. The introduction of PPyNF not only increases the electrochemical performance, but also ensures flexibility. This composite film electrode offers a capacitance up to 161 F g
Publisher: Wiley
Date: 03-08-2017
Publisher: American Chemical Society (ACS)
Date: 12-05-2021
Publisher: American Chemical Society (ACS)
Date: 14-05-2018
Abstract: Sodium-ion batteries (SIBs) are considered as one of the most favorable alternative devices for sustainable development of modern society. However, it is still a big challenge to search for proper anode materials which have excellent cycling and rate performance. Here, zinc selenide microsphere and multiwalled carbon nanotube (ZnSe/MWCNT) composites are prepared via hydrothermal reaction and following grinding process. The performance of ZnSe/MWCNT composites as a SIB anode is studied for the first time. As a result, ZnSe/MWCNTs exhibit excellent rate capacity and superior cycling life. The capacity retains as high as 382 mA h g
Publisher: Wiley
Date: 20-04-2021
Abstract: Vacancies created on a surface can alter the local electronic structure, thus enabling a higher intrinsic activity for the evolution of hydrogen and oxygen. Conventional strategies for vacancy engineering, however, have a strong focus on non‐metal sulfur/oxygen defects, which have often overlooked metallic vacancies. Herein, evidence is provided that cobalt vacancies can be atomically tuned to have different sizes to achieve cobalt vacancy clusters through controlling the migration of iridium single atoms. The coalescence of Co vacancy clusters at the surface of an IrCo alloy results in an increased d‐band level and eventually compromises H adsorption, leading to enhanced electrocatalytic activity toward the hydrogen evolution reaction. In addition, the Co vacancy clusters can improve the electronic conductivity with respect to the oxidized Co surface, which substantially aids in strengthening the adsorption of oxygen intermediates toward an effective oxygen evolution reaction at a low overpotential. These collective effects originate from the Co vacancy cluster and specifically enable highly efficient and stable water splitting with a low total overpotential of 384 mV in alkaline media and 365 mV in an acidic environment, achieving a current density of 10 mA cm –2 .
Publisher: Wiley
Date: 29-01-2008
DOI: 10.3170/2008-8-18435
Publisher: American Chemical Society (ACS)
Date: 09-07-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3EE02202A
Publisher: Springer Science and Business Media LLC
Date: 04-10-2018
DOI: 10.1038/S41467-018-06144-X
Abstract: The low-cost room-temperature sodium-sulfur battery system is arousing extensive interest owing to its promise for large-scale applications. Although significant efforts have been made, resolving low sulfur reaction activity and severe polysulfide dissolution remains challenging. Here, a sulfur host comprised of atomic cobalt-decorated hollow carbon nanospheres is synthesized to enhance sulfur reactivity and to electrocatalytically reduce polysulfide into the final product, sodium sulfide. The constructed sulfur cathode delivers an initial reversible capacity of 1081 mA h g −1 with 64.7% sulfur utilization rate significantly, the cell retained a high reversible capacity of 508 mA h g −1 at 100 mA g −1 after 600 cycles. An excellent rate capability is achieved with an average capacity of 220.3 mA h g −1 at the high current density of 5 A g −1 . Moreover, the electrocatalytic effects of atomic cobalt are clearly evidenced by operando Raman spectroscopy, synchrotron X-ray diffraction, and density functional theory.
Publisher: Wiley
Date: 30-05-2017
Abstract: Germanium (Ge) is a prospective anode material for lithium-ion batteries, as it possesses large theoretical capacity, outstanding lithium-ion diffusivity, and excellent electrical conductivity. Ge suffers from drastic capacity decay and poor rate performance, however, owing to its low electrical conductivity and huge volume expansion during cycling processes. Herein, a novel strategy has been developed to synthesize a Ge@N-doped carbon nanotubes (Ge@N-CNTs) composite with Ge nanoparticles uniformly distributed in the N-CNTs by using capillary action. This unique structure could effectively buffer large volume expansion. When evaluated as an anode material, the Ge@N-CNTs demonstrate enhanced cycling stability and excellent rate capabilities.
Publisher: American Scientific Publishers
Date: 09-2010
Publisher: Wiley
Date: 11-07-2017
Publisher: American Chemical Society (ACS)
Date: 22-07-2011
DOI: 10.1021/JP2039256
Publisher: Wiley
Date: 30-07-2018
Abstract: Lithium-sulfur (Li-S) batteries are considered as promising candidates for energy storage systems owing to their high theoretical capacity and high energy density. The application of Li-S batteries is hindered by several obstacles, however, including the shuttle effect, poor electrical conductivity, and the severe volume expansion of sulfur. The traditional method is to integrate sulfur with carbon materials. But the interaction between polysulfide intermediates and carbon is only weak physical adsorption, which easily leads to the escape of species from the framework (shuttle effect) of the material causing capacity loss. Recently, however, there has been a trend for the introduction of novel non-carbon materials as sulfur hosts based on the strong chemisorption. This review highlights recent research progress on novel non-carbon sulfur hosts based on strong chemisorption, in Li-S batteries. In comparison with carbon-based sulfur hosts, most non-carbon sulfur hosts have been demonstrated to be polar host materials that could efficiently adsorb polysulfide via strong chemisorption, mitigating their dissolution. The intrinsic mechanism associated with the role of non-carbon-based host materials in improving the performance of Li-S batteries is discussed.
Publisher: Elsevier BV
Date: 2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA04018J
Abstract: Conductive polypyrrole (PPy)-coated LiNi 0.5 Mn 1.5 O 4 (LNMO) composites are applied as cathode materials in Li-ion batteries, and their electrochemical properties are explored at both room and elevated temperature.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2EE03015B
Abstract: The composition, structure, reaction mechanism of transition metal-based catalysts and their effects on the electrochemical performance of Li-CO 2 cells were summarized, and some perspectives for the development of Li-CO 2 cells were put forward.
Publisher: Wiley
Date: 15-01-2020
Abstract: Applications of room-temperature-sodium sulfur (RT-Na/S) batteries are currently impeded by the insulating nature of sulfur, the slow redox kinetics of sulfur with sodium, and the dissolution and migration of sodium polysulfides. Herein, a novel micrometer-sized hierarchical S cathode supported by FeS
Publisher: Wiley
Date: 09-10-2018
Abstract: Highly reversible, stable, and non-dendritic metal anode (Li, Na etc.) is a crucial requirement for next-generation high-energy batteries. Herein, we have built a Li-Na hybrid battery (LNHB) based on Na plating/stripping, which features a high and stable coulombic efficiency of 99.2 % after 100 cycles, low voltage hysteresis (42 mV at 2 mA cm
Publisher: Wiley
Date: 15-10-2018
Publisher: Wiley
Date: 26-04-2022
Abstract: Carbonaceous materials are considered strong candidates as anode materials for sodium‐ion batteries (SIBs), which are expected to play an indispensable role in the carbon‐neutral era. Herein, novel braided porous carbon fibres (BPCFs) are prepared using the chemical vapour deposition (CVD) method. The BPCFs possess interwoven porous structures and abundant vacancies. The growth mechanism of the BPCFs can be attributed to the polycrystalline transformation of the nanoporous copper catalyst in the early stage of CVD process. Density functional theory calculations suggest that the Na + adsorption energies of the mono‐vacancy edges of the BPCFs (−1.22 and −1.09 eV) are lower than that of an ideal graphene layer (−0.68 eV), clarifying in detail the adsorption‐dominated sodium storage mechanism. Hence, the BPCFs as an anode material present an outstanding discharge capacity of 401 mAh g −1 at 0.1 A g−1 after 500 cycles. Remarkably, this BPCFs anode, under high‐mass‐loading of 5 mg cm−2, shows excellent long‐term cycling ability with a reversible capacity of 201 mAh g −1 at 10 A g −1 over 1000 cycles. This study provided a novel strategy for the development of high‐performance carbonaceous materials for SIBs.
Publisher: Wiley
Date: 29-05-2020
Publisher: Elsevier BV
Date: 04-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TA11221A
Abstract: This review focuses on the state-of-the-art development of emerging polyanionic and organic compounds to achieve high energy density of non-aqueous potassium-ion batteries.
Publisher: Elsevier BV
Date: 08-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA07050G
Abstract: A 3D porous N-doped carbon-nanofiber-supported Pd composite gives synergistic effects on electrocatalytic performance improvement. The carbon matrix with high porosity and conductivity could reach full potential of Pd particles as an excellent bifunctional catalyst cathode.
Publisher: Elsevier BV
Date: 09-2016
Publisher: Elsevier BV
Date: 10-2016
Publisher: IOP Publishing
Date: 17-05-2011
DOI: 10.1088/0957-4484/22/26/265401
Abstract: Spray pyrolysis was used to produce hollow hematite (α-Fe(2)O(3)) nanosphere (HHNS)/carbon nanotube (CNT) composite on a large scale. The method offers simplicity, high productivity, versatility, low cost, and suitability for industry. The structure is composed of hollow nanospheres in a network of CNTs. The possible formation mechanism of hollow α-Fe(2)O(3) nanospheres is due to the rapid evaporation of water and the super-hydrophobicity of the CNT surface. The electrochemical tests show that the HHNS/CNT composite is a promising lithium storage material in terms of high capacity (∼700 mAh g(-1)), good high-rate capability, and good cycle life (up to 150 cycles). The materials improve both lithium ion and electron transport, which are limiting factors on the high-rate capability of lithium-ion batteries. The production method can be easily adapted to produce a wide range of hollow metal oxide nanosphere/CNT composites.
Publisher: No publisher found
Date: 2010
Publisher: Wiley
Date: 08-10-2019
Publisher: Wiley
Date: 23-09-2019
Abstract: High-energy batteries with low cost are urgently needed in the field of large-scale energy storage, such as grid systems and renewable energy sources. Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) with alloy-based anodes provide huge potential due to their earth abundance, high capacity, and suitable working potential, and are recognized as attractive alternatives for next-generation batteries system. Although some important breakthroughs have been reported, more significant improvements are still required for long lifetime and high energy density. Herein, the latest progress for alloy-based anodes for SIBs and PIBs is summarized, mainly including Sn, Sb, Ge, Bi, Si, P, and their oxides, sulfides, selenides, and phosphides. Specifically, the material designs for the desired Na
Publisher: Elsevier BV
Date: 07-2013
Publisher: American Chemical Society (ACS)
Date: 24-07-2018
Publisher: American Chemical Society (ACS)
Date: 11-12-2014
DOI: 10.1021/AM5056504
Abstract: To study the influence of solid-state electrolyte coating layers on the performance of cathode materials for lithium-ion batteries in combination with organic liquid electrolyte, LiNbO3-coated Li1.08Mn1.92O4 cathode materials were synthesized by using a facile solid-state reaction method. The 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode exhibited an initial discharge capacity of 125 mAh g(-1), retaining a capacity of 119 mAh g(-1) at 25 °C, while at 55 °C, it exhibited an initial discharge capacity of 130 mAh g(-1), retaining a capacity of 111 mAh g(-1), both at a current density of 0.5 C (where 1 C is 148 mAh g(-1)). Very good rate capability was demonstrated, with the 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode showing more than 85% capacity at the rate of 50 C compared with the capacity at 0.5 C. The 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode showed a high lithium diffusion coefficient (1.6 × 10(-10) cm(2) s(-1) at 55 °C), and low apparent activation energy (36.9 kJ mol(-1)). The solid-state electrolyte coating layer is effective for preventing Mn dissolution and maintaining the high ionic conductivity between the electrode and the organic liquid electrolyte, which may improve the design and construction of next-generation large-scale lithium-ion batteries with high power and safety.
Publisher: Wiley
Date: 16-11-2020
Publisher: Wiley
Date: 14-09-2016
Abstract: Considering that the high capacity, long-term cycle life, and high-rate capability of anode materials for sodium-ion batteries (SIBs) is a bottleneck currently, a series of Co-doped FeS2 solid solutions with different Co contents were prepared by a facile solvothermal method, and for the first time their Na-storage properties were investigated. The optimized Co0.5 Fe0.5 S2 (Fe0.5) has discharge capacities of 0.220 Ah g(-1) after 5000 cycles at 2 A g(-1) and 0.172 Ah g(-1) even at 20 A g(-1) with compatible ether-based electrolyte in a voltage window of 0.8-2.9 V. The Fe0.5 s le transforms to layered Nax Co0.5 Fe0.5 S2 by initial activation, and the layered structure is maintained during following cycles. The redox reactions of Nax Co0.5 Fe0.5 S2 are dominated by pseudocapacitive behavior, leading to fast Na(+) insertion/extraction and durable cycle life. A Na3 V2 (PO4 )3 /Fe0.5 full cell was assembled, delivering an initial capacity of 0.340 Ah g(-1) .
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0SC06537D
Abstract: A comprehensive summary on how to optimize ester- and ether-based electrolytes for high-performance potassium-ion batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0TA11496K
Abstract: Potassium-ion batteries (PIBs) have attracted great attention due to the abundance and low cost of potassium resources.
Publisher: Elsevier BV
Date: 09-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA05853A
Abstract: BDT uniformly disperse into graphene with layer like structure, resulting in greatly improved electrochemical performance in comparison with pure BDT.
Publisher: Springer Science and Business Media LLC
Date: 21-11-2017
Publisher: Elsevier BV
Date: 07-2008
Publisher: American Chemical Society (ACS)
Date: 20-09-2013
DOI: 10.1021/NL402237U
Abstract: To explore good anode materials of high safety, high reversible capacity, good cycling, and excellent rate capability, a Li3VO4 microbox with wall thickness of 40 nm was prepared by a one-pot and template-free in situ hydrothermal method. In addition, its composite with graphene nanosheets of about six layers of graphene was achieved. Both of them, especially the Li3VO4/graphene nanosheets composite, show superior electrochemical performance to the formerly reported vanadium-based anode materials. The composite shows a reversible capacity of 223 mAh g(-1) even at 20C (1C = 400 mAh g(-1)). After 500 cycles at 10C there is no evident capacity fading.
Publisher: American Chemical Society (ACS)
Date: 08-05-2020
DOI: 10.26434/CHEMRXIV.12264083.V1
Abstract: Herein, we develop a non-selective charge compensation strategy to prepare multi-single-atom doped carbon (MSAC) in which a sodium p-toluenesulfonate (PTS-Na) doped polypyrrole (S-PPy) polymer is designed to anchor discretionary mixtures of multiple metal cations, including iron (Fe 3+ ), cobalt (Co 3+ ), ruthenium (Ru 3+ ), palladium (Pd 2+ ), indium (In 3+ ), iridium (Ir 2+ ), and platinum (Pt 2+ ) . As illustrated in Figure 1, the carbon surface can be tuned with different level of compositional complexities, including unary Pt 1 @NC, binary (MSAC-2, (PtFe) 1 @NC), ternary (MSAC-3, (PtFeIr) 1 @NC), quaternary (MSAC-4, (PtFeIrRu) 1 @NC), quinary (MSAC-5, (PtFeIrRuCo) 1 @NC), senary (MSAC-6, (PtFeIrRuCoPd) 1 @NC), and septenary (MSAC-7, (PtFeIrRuCoPdIn) 1 @NC) s les. The structural evolution of carbon surface dictates the activities of both ORR and HER. The senary MSAC-6 achieves the ORR mass activity of 18.1 A·mg metal -1 at 0.9 V (Vs reversible hydrogen electrode (RHE)) over 30K cycles, which is 164 times higher than that of commercial Pt/C. The quaternary MSAC-4 presented a comparable HER catalytic capability with that of Pt/C. These results indicate that the highly complexed carbon surface can enhance its ability over general electrochemical catalytic reactions. The mechanisms regarding of the ORR and HER activities of the alternated carbon surface are also theoretically and experimentally investigated in this work, showing that the synergistic effects amongst the co-doped atoms can activate or inactivate certain single-atom sites.
Publisher: American Chemical Society (ACS)
Date: 09-2020
Publisher: Elsevier BV
Date: 09-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3NR02271D
Abstract: A coating strategy for a garnet-type solid state electrolyte is proposed. This improves ionic conductivity and suppresses electronic conductivity at both high voltages and high temperatures. It extends cycling stability at high current densities.
Publisher: Wiley
Date: 09-06-2022
Abstract: Transition‐metal alloys are currently drawing increasing attention as promising electrocatalysts for the alkaline hydrogen evolution reaction (HER). However, traditional density‐functional‐theory‐derived d ‐band theory fails to describe the hydrogen adsorption energy (Δ G H ) on hollow sites. Herein, by studying the Δ G H for a series of Ni−M (M=Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Mo, W) bimetallic alloys, an improved d ‐band center was provided and a potential NiCu electrocatalyst with a near‐optimal Δ G H was discovered. Moreover, oxygen atoms were introduced into Ni−M (O−NiM) to balance the adsorption/desorption of hydroxyl species. The tailored electrocatalytic sites for water dissociation can synergistically accelerate the multi‐step alkaline HER. The prepared O−NiCu shows the optimum HER activity with a low overpotential of 23 mV at 10 mA cm −2 . This work not only broadens the applicability of d ‐band theory, but also provides crucial understanding for designing efficient HER electrocatalysts.
Publisher: Elsevier BV
Date: 06-2013
Publisher: Wiley
Date: 09-10-2022
Abstract: Sodium‐ion batteries (SIBs) show tremendous potential for large‐scale energy storage systems due to the high abundance of sodium resources and potentially low cost. Among the discovered anode materials for SIBs, metal selenides with large theoretical capacities are considered as a promising candidate. Nevertheless, metal selenide‐based anodes are trapped by poor ionic/electronic conductivity, low initial Coulombic efficiency, and drastic volume changes during the (de)sodiation process. Herein, the differences in sodium‐storage mechanisms of different metal selenides are first analyzed. Subsequently, the specific challenges and corresponding modification strategies (such as nanostructure design, carbon modification, potential window regulation, electrolyte optimization, and constructing heterostructures) for metal selenides as SIB anodes are discussed in detail, and recent advances are also presented. Finally, the potential research directions of metal selenides in SIBs are comprehensively reviewed. It is believed that this review can provide constructive comments on the optimization and large‐scale application of high‐performance metal selenide‐based anode for SIBs.
Publisher: Wiley
Date: 17-08-2023
Abstract: Sodium‐ion batteries (SIBs) are a viable alternative to meet the requirements of future large‐scale energy storage systems due to the uniform distribution and abundant sodium resources. Among the various cathode materials for SIBs, phosphate‐based polyanionic compounds exhibit excellent sodium‐storage properties, such as high operation voltage, remarkable structural stability, and superior safety. However, their undesirable electronic conductivities and specific capacities limited their application in large‐scale energy storage systems. Herein, the development history and recent progress of phosphate‐based polyanionic cathodes are first overviewed. Subsequently, the effective modification strategies of phosphate‐based polyanionic cathodes are summarized toward high‐performance SIBs, including surface coating, morphological control, ion doping, and electrolyte optimization. Besides, the electrochemical performance, cost, and industrialization analysis of phosphate‐based polyanionic cathodes for SIBs are discussed for accelerating commercialization development. Finally, the future directions of phosphate‐based polyanionic cathodes are comprehensively concluded. We believe that this review can provide instructive insight into developing practical phosphate‐based polyanionic cathodes for SIBs. This article is protected by copyright. All rights reserved
Publisher: Wiley
Date: 15-07-2022
Abstract: It is still very urgent and challenging to simultaneously develop high-rate and long-cycle oxide cathodes for sodium-ion batteries (SIBs) because of the sluggish kinetics and complex multiphase evolution during cycling. Here, the concept of accurately manipulating structural evolution and formulating high-performance heterostructured biphasic layered oxide cathodes by local chemistry and orbital hybridization modulation is reported. The P2-structure stoichiometric composition of the cathode material shows a layered P2- and O3-type heterostructure that is explicitly evidenced by various macroscale and atomic-scale techniques. Surprisingly, the heterostructured cathode displays excellent rate performance, remarkable cycling stability (capacity retention of 82.16% after 600 cycles at 2 C), and outstanding compatibility with hard carbon anode because of the integrated advantages of intergrowth structure and local environment regulation. Meanwhile, the formation process from precursors during calcination and the highly reversible dynamic structural evolution during the Na
Publisher: MDPI AG
Date: 03-11-2017
DOI: 10.3390/NANO7110368
Publisher: American Chemical Society (ACS)
Date: 04-10-2021
Publisher: Elsevier BV
Date: 11-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA07061H
Abstract: The introduction of P heteroatoms into NiO constructed abundant Ni–P coordination groups as emerging catalytic sites, which improved adsorption capacity to the intermediate product LiO 2 , ensuring effective formation/decomposition of conformal Li 2 O 2 .
Publisher: Wiley
Date: 09-01-2019
Abstract: Low-cost layered oxides free of Ni and Co are considered to be the most promising cathode materials for future sodium-ion batteries. Biphasic Na
Publisher: Elsevier BV
Date: 08-2021
Publisher: Springer Science and Business Media LLC
Date: 06-05-2010
Publisher: Wiley
Date: 02-05-2017
Publisher: Wiley
Date: 03-01-2020
Publisher: Wiley
Date: 12-05-2020
Publisher: Elsevier BV
Date: 08-2021
Publisher: Elsevier BV
Date: 12-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0TA08748C
Abstract: ZnS quantum dots and single Co atoms grown in N-doped carbon microparticles serve as multifunctional S hosts for sustainable Na–S batteries.
Publisher: Wiley
Date: 27-02-2019
Publisher: Research Square Platform LLC
Date: 02-2023
DOI: 10.21203/RS.3.RS-2474646/V1
Abstract: High electrochemical-performance and cost-efficient cathodes are crucial for the development of grid-scale sodium-ion batteries (SIBs). Prussian blue analogs (PBAs) are generally regarded as promising cathode candidates for SIBs, although their practical application has been limited by low capacity or poor cycling ability caused by their poor crystallinity and reversibility. Herein, a series of low-cost and high-quality ternary PBAs are prepared by structural regulation to simultaneously achieve high capacity, stable cyclability, and wide temperature suitability. The prepared CuHCF-3 s le has delivered a high specific capacity of 132.4 mAh g-1 with 73.3% capacity retention over 1000 cycles when applied as a cathode material for SIBs. A highly reversible three phase (monoclinic to cubic to tetragonal) sodium-ion storage mechanism is revealed via multiple in-situ techniques. Density functional theory calculations indicate that the key for achieving high capacity and long lifespan lies in the synergistic effect of Mn and Cu in the crystal structure of PBAs. The presence of Mn could enhance electronic conductivity, improve the operating voltage, and provide more possible redox centers while the presence of Cu-ions can restrain the Jahn-Teller distortions and buffer huge volume expansion during cycling. Furthermore, the wide-temperature suitability of these materials and Na-ion full cells are investigated based on kilogram-scale production as a demonstration for their practical application. We hope that this work can provide new insights into designing high-performance and low-cost electrode materials for practical grid-scale energy storage systems.
Publisher: Wiley
Date: 08-12-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CE02134K
Abstract: A new type of unique 1D/2D hierarchical Ag–Ag 2 S hybrids is fabricated by an extremely simple solution route under ambient conditions. The diffusion and Ostwald ripening processes dominate the evolution of heterostructure.
Publisher: Wiley
Date: 30-09-2020
Publisher: American Chemical Society (ACS)
Date: 14-09-2018
DOI: 10.1021/JACS.8B05134
Abstract: The durability and reactivity of catalysts can be effectively and precisely controlled through the careful design and engineering of their surface structures and morphologies. Herein, we develop a novel "adsorption-calcination-reduction" strategy to synthesize spinel transitional metal oxides with a unique necklace-like multishelled hollow structure exploiting sacrificial templates of carbonaceous microspheres, including NiCo
Publisher: Wiley
Date: 17-01-2022
Abstract: The exploration of facile, low‐cost, and universal synthetic strategies for high‐performance aqueous energy storage is extremely urgent. The electrochemical activation tactic is an emerging synthetic technique that can turn inert or weakly active substances into highly active materials for aqueous energy storage via in situ or ex situ electrochemical treatment, which is receiving increasing attention due to its advantages of facile operation, variable control, high efficiency, flexibility, and wide applicability. This review first discusses the definition and general implementing methods of the electrochemical activation tactic, as well as the fundamental activation mechanisms, and then summarizes its applications in various aqueous systems, including rechargeable batteries and electrochemical capacitors with different charge carriers. The remaining challenges, potential solutions, and further perspectives are discussed finally. It is believed that this review will provide a timely summary and new inspiration for cutting‐edge research on advanced aqueous energy storage devices.
Publisher: Elsevier BV
Date: 05-2008
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8TA11927A
Abstract: The electrochemical performance of layered P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 is highly related to the cut-off voltage and the electrolyte used.
Publisher: Wiley
Date: 19-03-2022
Abstract: Prussian blue analogs (PBAs) are promising cathode materials for sodium‐ion batteries (SIBs) due to their low‐cost, similar energy density comparable with that of LiFePO 4 in lithium‐ion batteries, and long cycle life. Nevertheless, crystal water (≈10 wt%) in PBAs from aqueous synthesis environments can bring significant side effects in real SIBs, especially for calendar life and high temperature storage performance. Therefore, it is of great importance to eliminate crystal water in PBAs for future commercial applications. Herein, a facile heat‐treatment method is reported in order to remove water from Fe‐based PBAs. Although the heat‐treated s le can be easily rehydrated in air, it still exhibits a stable cycling performance over 2000 times under controlled charge cut‐off voltage. In situ synchrotron high‐temperature powder X‐ray diffraction demonstrates that the as‐prepared s le is maintained at a new trigonal phase after dehydration. Moreover, the redox reaction of low‐spin Fe 2+ /Fe 3+ is activated and the high‐temperature storage performance of as‐prepared s le is significantly improved after removal of water.
Publisher: Wiley
Date: 08-02-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA09538A
Abstract: A catalyst consisting of single-atom Ru sites supported on an N-MXene (Ti 3 C 2 T x ) was developed for pH-universal hydrogen generation based on theoretical predictions, whose performances are comparable to and better than those of Pt/C.
Publisher: American Chemical Society (ACS)
Date: 19-12-2016
DOI: 10.1021/JACS.6B08685
Abstract: Despite the high theoretical capacity of the sodium-sulfur battery, its application is seriously restrained by the challenges due to its low sulfur electroactivity and accelerated shuttle effect, which lead to low accessible capacity and fast decay. Herein, an elaborate carbon framework, interconnected mesoporous hollow carbon nanospheres, is reported as an effective sulfur host to achieve excellent electrochemical performance. Based on in situ synchrotron X-ray diffraction, the mechanism of the room temperature Na/S battery is proposed to be reversible reactions between S
Publisher: Wiley
Date: 13-07-2021
Abstract: Manganese‐based Prussian Blue, Na 2−δ Mn[Fe(CN) 6 ] (MnPB), is a good candidate for sodium‐ion battery cathode materials due to its high capacity. However, it suffers from severe capacity decay during battery cycling due to the destabilizing Jahn–Teller distortions it undergoes as Mn 2+ is oxidized to Mn 3+ . Herein, the structure is stabilized by a thin epitaxial surface layer of nickel‐based Prussian Blue (Na 2−δ Ni[Fe(CN) 6 ]). The one‐pot synthesis relies on a chelating agent with an unequal affinity for Mn 2+ and Ni 2+ ions, which prevents Ni 2+ from reacting until the Mn 2+ is consumed. This is a new and simpler synthesis of core–shell materials, which usually needs several steps. The material has an electrochemical capacity of 93 mA h g −1 , of which it retains 96 % after 500 charge–discharge cycles (vs. 37 % for MnPB). Its rate capability is also remarkable: at 4 A g −1 (ca. 55 C) it can reversibly store 70 mA h g −1 , which is also reflected in its diffusion coefficient of ca. 10 −8 cm 2 s −1 . The epitaxial outer layer appears to exert an anisotropic strain on the inner layer, preventing the Jahn–Teller distortions it normally undergoes during de‐sodiation.
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 10-2015
Publisher: Springer Science and Business Media LLC
Date: 10-2021
Publisher: Wiley
Date: 15-01-2022
Abstract: Porous carbon has been widely used as an efficient host to encapsulate highly active molecular sulfur (S) in Li–S and Na–S batteries. However, for these sub‐nanosized pores, it is a challenge to provide fully accessible sodium ions with unobstructed channels during cycling, particularly for high sulfur content. It is well recognized that solid interphase with full coverage over the designed architectures plays critical roles in promoting rapid charge transfer and stable conversion reactions in batteries, whereas constructing a high‐ionic‐conductivity solid interphase in the pores is very difficult. Herein, unique continuous carbonaceous pores are tailored, which can serve as multifunctional channels to encapsulate highly active S and provide fully accessible pathways for sodium ions. Solid sodium sulfide interphase layers are also realized in the channels, showing high Na‐ion conductivity toward stabilizing the redox kinetics of the S cathode during charge/discharge processes. This systematically designed carbon‐hosted sulfur cathode delivers superior cycling performance (420 mAh g −1 at 2 A g −1 after 2000 cycles), high capacity retention of ≈90% over 500 cycles at current density of 0.5 A g −1 , and outstanding rate capability (470 mAh g −1 at 5 A g −1 ) for room‐temperature sodium–sulfur batteries.
Publisher: Springer Science and Business Media LLC
Date: 07-01-2019
DOI: 10.1038/S41467-018-07646-4
Abstract: Manganese based layered oxides have received increasing attention as cathode materials for sodium ion batteries due to their high theoretical capacities and good sodium ion conductivities. However, the Jahn–Teller distortion arising from the manganese (III) centers destabilizes the host structure and deteriorates the cycling life. Herein, we report that zinc-doped Na 0.833 [Li 0.25 Mn 0.75 ]O 2 can not only suppress the Jahn–Teller effect but also reduce the inherent phase separations. The reduction of manganese (III) amount in the zinc-doped s le, as predicted by first-principles calculations, has been confirmed by its high binding energies and the reduced octahedral structural variations. In the viewpoint of thermodynamics, the zinc-doped s le has lower formation energy, more stable ground states, and fewer spinodal decomposition regions than those of the undoped s le, all of which make it charge or discharge without any phase transition. Hence, the zinc-doped s le shows superior cycling performance, demonstrating that zinc doping is an effective strategy for developing high-performance layered cathode materials.
Publisher: American Scientific Publishers
Date: 02-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TA10823K
Abstract: With the high consumption and increasing price of lithium resources, sodium ion batteries (SIBs) have been considered as attractive and promising potential alternatives to lithium ion batteries, owing to the abundance and low cost of sodium resources, and the similar electrochemical properties of sodium to lithium.
Publisher: Elsevier BV
Date: 11-2014
Publisher: Elsevier BV
Date: 07-2021
Publisher: Wiley
Date: 25-09-2018
Publisher: Wiley
Date: 03-10-2023
Publisher: American Chemical Society (ACS)
Date: 28-01-2022
DOI: 10.1021/ACS.NANOLETT.1C04492
Abstract: For practical sodium-ion batteries, both high electrochemical performance and cost efficiency of the electrode materials are considered as two key parameters. Prussian blue analogues (PBAs) are broadly recognized as promising cathode materials due to their low cost, high theoretical capacity, and cycling stability, although they suffer from low-crystallinity-induced performance deterioration. Herein, a facile "ice-assisted" strategy is presented to prepare highly crystallized PBAs without any additives. By suppressing structure defects, the cathode exhibits a high capacity of 123 mAh g
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM15041G
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CC00294F
Abstract: The exfoliated MoS 2 –C composite was tested as a novel anode material for sodium ion batteries with high capacity and prolonged cycling life. Its unique structure and the optimized electrolyte effectively promote Na-storage performance.
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 03-2017
Publisher: Elsevier BV
Date: 11-2021
Publisher: Wiley
Date: 17-11-2021
Abstract: The safety of energy storage equipment has always been a stumbling block to the development of battery, and sodium ion battery is no exception. However, as an ultimate solution, the use of non‐flammable electrolyte is susceptible to the side effects, and its poor compatibility with electrode, causing failure of batteries. Here, we report a non‐flammable electrolyte design to achieve high‐performance sodium ion battery, which resolves the dilemma via regulating the solvation structure of electrolyte by hydrogen bonds and optimizing the electrode–electrolyte interphase. The reported non‐flammable electrolyte allows stable charge‐discharge cycling of both sodium vanadium phosphate@hard carbon and Prussian blue@hard carbon full pouch cell for more than 120 cycles with a capacity retention of % and high cycling Coulombic efficiency (99.7 %).
Publisher: American Chemical Society (ACS)
Date: 22-09-2016
Abstract: High voltage (5-V class) spinel LiCr
Publisher: Wiley
Date: 15-04-2016
Publisher: Elsevier BV
Date: 03-2022
Publisher: American Chemical Society (ACS)
Date: 12-09-2018
Abstract: Dual ion batteries based on Na
Publisher: American Chemical Society (ACS)
Date: 10-09-2021
Publisher: Wiley
Date: 25-02-2020
Abstract: Hierarchical hollow CoP and carbon composites were obtained through a facile synthetic method, where carbonization and phosphorization of the precursor were completed within one single step. The composites are composed of hollow CoP@C spheres, which are further made up of CoP nanoparticles with a thin outer carbon layer. Electrochemical performances of the prepared CoP@C composites as anodes for sodium and potassium storage were evaluated and compared. In situ TEM, in situ synchrotron XRD, and DFT calculations were conducted to study the structural evolution and the interaction between Na/K and CoP during cycling processes. Benefiting from the synergistic effect of conductive carbon layer and hierarchical hollow structure, the as-prepared CoP@C composites demonstrate superior sodium and potassium storage capability as anode materials for rechargeable batteries.
Publisher: American Chemical Society (ACS)
Date: 04-02-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CC01548C
Abstract: This review summarizes the recent progress and presents the challenges and strategies of Fe-based and Mn-based Prussian blue analogues for metal-ion batteries.
Publisher: Wiley
Date: 16-11-2017
Publisher: Elsevier BV
Date: 02-2015
Publisher: Wiley
Date: 28-07-2022
Abstract: Room‐temperature sodium–sulfur (RT‐Na/S) batteries are emerging as promising candidates for stationary energy‐storage systems, due to their high energy density, resource abundance, and environmental benignity. A better understanding of RT‐Na/S batteries in the view of the whole battery components is of essential importance for fundamental research and practical applications. In particular, the components other than sulfur cathodes in preventing the migration of polysulfides and accelerating the reaction kinetics have been greatly overlooked. Such a biased research trend is also adverse to the broader applications for RT‐Na/S batteries, which have long been ignored in previous reviews. Herein, approaches to the historical progress toward practical RT‐Na/S batteries through a “teamwork” perspective are comprehensively summarized, and balanced research trends are encouraged to enable practical RT‐Na/S batteries. In the meantime, the persisting issues, promising solutions, and practical applications of advanced sulfur host design, Na metal anode protection, electrolyte optimization, separator modification, and binder engineering are clearly emphasized. Finally, the device‐scale evaluation in practical parameters and advanced characterization tools are thoroughly provided. This review aims to provide the “teamwork” perspective on the whole‐cell design and fundamental guidelines that can shed light on research directions for practical RT‐Na/S batteries.
Publisher: Elsevier BV
Date: 07-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1DT10396B
Abstract: A tin nanoparticle olypyrrole (nano-Sn/PPy) composite was prepared by chemically reducing and coating Sn nanoparticles onto the PPy surface. The composite shows a much higher surface area than the pure nano-Sn reference s le, due to the porous higher surface area of PPy and the much smaller size of Sn in the nano-Sn/PPy composite than in the pure tin nanoparticle s le. Poly(vinylidene fluoride) (PVDF) and sodium carboxymethyl cellulose (CMC) were also used as binders, and the electrochemical performance was investigated. The electrochemical results show that both the capacity retention and the rate capability are in the same order of nano-Sn/PPy-CMC > nano-Sn/PPy-PVDF > nano-Sn-CMC > nano-Sn-PVDF. Scanning electronic microscopy (SEM) and electrochemical impedance spectroscopy (EIS) results show that CMC can prevent the formation of cracks in electrodes caused by the big volume changes during the charge-discharge process, and the PPy in the composite can provide a conducting matrix and alleviate the agglomeration of Sn nanoparticles. The present results indicate that the nano-Sn/PPy composite could be suitable for the next generation of anode materials with relatively good capacity retention and rate capability.
Publisher: Wiley
Date: 02-01-2023
Abstract: Sodium‐ion batteries (SIBs) with fast‐charge capability and long lifespan could be applied in various sustainable energy storage systems, from personal devices to grid storage. Inspired by the disordered Rubik's cube, here, we report that the high‐entropy (HE) concept can lead to a very substantial improvement in the sodium storage properties of hexacyanoferrate (HCF). An ex le of HE‐HCF has been synthesized as a proof of concept, which has achieved impressive cycling stability over 50 000 cycles and an outstanding fast‐charging capability up to 75 C. Remarkable air stability and all‐climate performance are observed. Its quasi‐zero‐strain reaction mechanism and high sodium diffusion coefficient have been measured and analyzed by multiple in situ techniques and density functional theory calculations. This strategy provides new insights into the development of advanced electrodes and provides the opportunity to tune electrochemical performance by tailoring the atomic composition.
Publisher: Wiley
Date: 24-02-2022
Abstract: Prussian blue analogues (PBAs) have attracted wide attention for their application in the energy storage and conversion field due to their low cost, facile synthesis, and appreciable electrochemical performance. At the present stage, most research on PBAs is focused on their material‐level optimization, whereas their properties in practical battery systems are seldom considered. This review aims to first provide an overview of the history and parameters of PBA materials and analyze the fundamental principles toward rational design of PBAs, and then evaluate the prospects and challenges for PBAs for practical sodium‐ion batteries, hoping to bridge the gap between laboratory research and commercial reality.
Publisher: Wiley
Date: 26-08-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EE02997A
Abstract: This work provides guidance on controlling anionic redox activity and finding novel high-capacity transition metal oxide cathodes for sodium-ion batteries.
Publisher: Wiley
Date: 27-10-2021
Abstract: LiS batteries are considered a promising energy storage system owing to the great abundance of sulfur and its high specific capacity. Polysulfide shuttling and sluggish reaction kinetics in sulfur cathodes significantly degrade the cycle life of LiS batteries. A modified method is employed to create defects in carbon nanotubes (CNTs), anchoring polysulfides, and accelerating electrochemical reactions. The defect‐rich CNTs (D‐CNT) enable dramatic improvement in both cycling and rate performance. A specific capacity of 600 mAh g −1 with a current density of 0.5 C is achieved after 400 cycles, and even at a very high current density (5.0 C), a specific capacity of 434 mAh g −1 is observed. Cycling stability up to 1000 cycles is also achieved under the conditions of high sulfur loading and lean electrolyte. Theoretical calculations revealed that the improvement is mainly attributable to the electronic structure of defect‐rich carbon, which has higher binding energy with polysulfides because of the upshift of the p ‐band center. Furthermore, rotating disk electrode measurements demonstrate that the defect‐rich carbon can accelerate the polysulfide conversion process. It is anticipated that this new design strategy can be the starting point for mediator‐like carbon materials with good conductivity and high catalytic activity for LiS batteries.
Publisher: Wiley
Date: 12-2021
Abstract: Single‐atom electrocatalysts (SACs) toward hydrogen evolution reaction (HER) have been extensively studied owing to their high mass activity and atom utilization. Although platinum (Pt) based SACs have been reported frequently, optimizing the metal–support interaction to achieve low valence state Pt species is still a challenge. Here, the carbon supported α‐MoC 1− x nanoparticles are used to anchor zero‐valent Pt single atoms (Pt SA /α‐MoC 1− x @C) as electrocatalyst for pH‐universal HER. The Pt SA /α‐MoC 1− x @C with optimized Pt loading of 0.75 wt% shows a low overpotential (21, 12, and 36 mV at 10 mA cm –2 ) and high turnover frequencies (27.00, 31.98, and 21.39 H 2 s –1 at 100 mV) for HER under alkaline, acidic, and neutral electrolyte conditions. Experimental evidence combing density functional theory calculations confirm that the charge polarization leads to a zero‐valence state of Pt single atom and further optimized the adsorption/desorption energy of intermediates, further accelerating the reaction dynamics for HER.
Publisher: American Scientific Publishers
Date: 02-2012
Abstract: Copper oxide-carbon composite with hollow sphere structure has been synthesized by a one-step spray pyrolysis method and tested as anode material for lithium-ion batteries. Different analytical methods, including X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray spectrometry, thermogravimetric analysis, and systematic electrochemical tests were performed. The results demonstrate that the CuO-carbon composite in conjunction with carboxymethyl cellulose (CMC) binder has an excellent electrochemical performance, with a capacity of 577 mAh g(-1) up to 100 cycles. The usage of the water soluble binder, CMC, not only obviously improves the electrochemical performance, but also makes the electrode fabrication process much easier and more environmentally friendly.
Publisher: Wiley
Date: 11-05-2023
Abstract: Prussian blue analogs (PBAs) have attracted wide interest as a class of ideal cathodes for rechargeable sodium‐ion batteries due to their low cost, high theoretical capacity, and facile synthesis. Herein, a series of highly crystalline Fe‐based PBAs (FeHCF) cubes, where HCF stands for the hexacyanoferrate, is synthesized via a one‐step pyrophosphate‐assisted co‐precipitation method. By applying this proposed facile crystallization‐controlled method to slow down the crystallization process and suppress the defect content of the crystal framework of the PBAs, the as‐prepared materials demonstrate high crystallization and a sodium‐rich induced rhombohedral phase. As a result, the as prepared FeHCF can deliver a high specific capacity of up to 152.0 mA h g −1 (achieving ≈90% of its theoretical value) and an excellent rate capability with a high‐capacity retention ratio of 88% at 10 C, which makes it one of the most competitive candidates among the cathodes reported regarding both capacity and rate performance. A highly reversible three‐phase‐transition sodium‐ion storage mechanism has been revealed via multiple in situ techniques. Furthermore, the full cells fabricated with as‐prepared cathode and commercial hard carbon anode exhibit excellent compatibility which shows great prospects for application in the large‐scale energy storage systems.
Publisher: Wiley
Date: 20-07-2022
Abstract: Sodium metal batteries are recognized as promising candidates for next‐generation energy storage devices, as a result of their high energy density, low redox potential, and cheap material price. Na metal anodes, however, generally exhibit notorious problems, including progressively thickened interfaces with active Na loss and Na metal dendrite growth with safety hazards. Herein, a lightweight aerogel consisting of MgF 2 nanocrystals grown on a reduced graphene oxide (RGO) aerogel matrix (MgF 2 @RGO) is rationally designed as a multifunctional host material for Na metal anodes. The MgF 2 nanocrystals can be electrochemically converted in situ into Mg and NaF nanograins during the first Na plating process, in which the Mg works as sodiophilic nucleation seeds for Na plating and NaF plays a key role in suppressing Na dendrite growth. Significantly, the Na metal anodes with the MgF 2 @RGO aerogel host deliver significantly enhanced Coulombic efficiency and dramatically improved cycling stability for more than 1600 h. The morphology evolution confirms the advantages of the Na metal anode with the MgF 2 @RGO host, which exhibits dense and flat interfaces. By pairing with the Na 3 V 2 (PO 4 ) 3 cathode, the Na metal batteries achieve stable cycling and good rate capability, suggesting the potential of the Na/MgF 2 @RGO anode for practical applications.
Publisher: Wiley
Date: 21-02-2022
Abstract: It is vital to dynamically regulate S activity to achieve efficient and stable room‐temperature sodium–sulfur (RT/Na−S) batteries. Herein, we report using cobalt sulfide as an electron reservoir to enhance the activity of sulfur cathodes, and simultaneously combining with cobalt single atoms as double‐end binding sites for a stable S conversion process. The rationally constructed CoS 2 electron reservoir enables the straight reduction of S to short‐chain sodium polysulfides (Na 2 S 4 ) via a streamlined redox path through electron transfer. Meanwhile, cobalt single atoms synergistically work with the electron reservoir to reinforce the streamlined redox path, which immobilize in situ formed long‐chain products and catalyze their conversion, thus realizing high S utilization and sustainable cycling stability. The as‐developed sulfur cathodes exhibit a superior rate performance of 443 mAh g −1 at 5 A g −1 with a high cycling capacity retention of 80 % after 5000 cycles at 5 A g −1 .
Publisher: Elsevier BV
Date: 03-2020
Publisher: Wiley
Date: 11-07-2019
Abstract: Emerging rechargeable sodium-ion storage systems-sodium-ion and room-temperature sodium-sulfur (RT-NaS) batteries-are gaining extensive research interest as low-cost options for large-scale energy-storage applications. Owing to their abundance, easy accessibility, and unique physical and chemical properties, sulfur-based materials, in particular metal sulfides (MS
Publisher: Elsevier BV
Date: 12-2009
Publisher: American Chemical Society (ACS)
Date: 25-02-2022
Abstract: Electroactive acid anhydride with multicarbonyl is highly promising for electrochemical energy storage because of its high specific capacity and environmental benignity. Its low electrical conductivity and high dissolution in organic electrolyte, however, result in poor cycling and rate capabilities. Here, we report a naphthalene polyimide derivative (NPI) synthesized by using anhydride under condensation polymerization conditions, along with its composite with graphene (NPI-G) fabricated via in situ polymerization. The composite delivers a high reversible capacity and outstanding cycling stability and rate capability as a cathode for sodium-ion batteries (SIBs) owing to the formation of a polymer, the improvement in the electrical conductivity brought about by the highly dispersed graphene sheets, and the enhancement of structural stability resulting from the π-π stacking interaction between the phenyl groups of NPI and the six-member carbon rings of graphene. This investigation sheds light on the development, design, and screening of next-generation organic electrode materials with high performance for SIBs.
Publisher: Wiley
Date: 10-07-2019
Abstract: Both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) are crucial to water splitting, but require alternative active sites. Now, a general π‐electron‐assisted strategy to anchor single‐atom sites (M=Ir, Pt, Ru, Pd, Fe, Ni) on a heterogeneous support is reported. The M atoms can simultaneously anchor on two distinct domains of the hybrid support, four‐fold N/C atoms (M@NC), and centers of Co octahedra (M@Co), which are expected to serve as bifunctional electrocatalysts towards the HER and the OER. The Ir catalyst exhibits the best water‐splitting performance, showing a low applied potential of 1.603 V to achieve 10 mA cm −2 in 1.0 m KOH solution with cycling over 5 h. DFT calculations indicate that the Ir@Co (Ir) sites can accelerate the OER, while the Ir@NC 3 sites are responsible for the enhanced HER, clarifying the unprecedented performance of this bifunctional catalyst towards full water splitting.
Publisher: Elsevier BV
Date: 12-2010
Publisher: Elsevier BV
Date: 03-2012
Publisher: Wiley
Date: 28-04-2021
Abstract: Alkali‐metal/sulfur batteries hold great promise for offering relatively high energy density compared to conventional lithium‐ion batteries. By providing viable sulfur composites that can be effectively used, carbonaceous hosts as a key component play critical roles in overcoming the preliminary challenges associated with the insulating sulfur and its relatively soluble polysulfides. Herein, a comprehensive overview and recent progress on carbonaceous hosts for advanced next‐generation alkali‐metal/sulfur batteries are presented. In order to encapsulate the highly active sulfur mass and fully limit polysulfide dissolution, strategies for tailoring the design and synthesis of carbonaceous hosts are summarized in this work. The sticking points that remain for sulfur cathodes in current alkali‐metal/sulfur systems and the future remedies that can be provided by carbonaceous hosts are also indicated, which can lead to long cycling lifetimes and highly reversible capacities under repeated sulfur reduction reactions in alkali‐metal/sulfur during cycling.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA21139A
Abstract: SnO 2 -coated polypyrrole (PPy) with a three-dimensional (3-D) structured nanotube network has been prepared via a facile hydrothermal method and tested as an anode material for Na-ion batteries.
Publisher: Wiley
Date: 11-07-2019
Publisher: Wiley
Date: 21-08-2023
Abstract: High‐voltage lithium‐ion batteries (LIBs) have attracted great attention due to their promising high energy density. However, severe capacity degradation is witnessed, which originated from the incompatible and unstable electrolyte‐electrode interphase at high voltage. Herein, a robust additive‐induced sulfur‐rich interphase is constructed by introducing an additive with ultrahigh S‐content (34.04 %, methylene methyl disulfonate, MMDS) in 4.6 V LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523)||graphite pouch cell. The MMDS does not directly participate the inner Li + sheath, but the strong interactions between MMDS and PF 6 − anions promote the preferential decomposition of MMDS and broaden the oxidation stability, facilitating the formation of an ultrathin but robust sulfur‐rich interfacial layer. The electrolyte consumption, gas production, phase transformation and dissolution of transition metal ions were effectively inhibited. As expected, the 4.6 V NCM523||graphite pouch cell delivers a high capacity retention of 87.99 % even after 800 cycles. This work shares new insight into the sulfur‐rich additive‐induced electrolyte‐electrode interphase for stable high‐voltage LIBs.
Publisher: Elsevier BV
Date: 04-2021
Publisher: American Chemical Society (ACS)
Date: 20-05-2020
Publisher: Elsevier BV
Date: 03-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1QM00914A
Abstract: MnMoO 4 with various micro/nanoscale structures to improve the electronic conductivity and enhance the electrochemical performances for supercapacitors are summarized in this mini-review.
Publisher: Wiley
Date: 30-09-2019
Abstract: Rechargeable room-temperature sodium-sulfur (RT-NaS) batteries represent one of the most attractive technologies for future stationary energy storage due to their high energy density and low cost. The S cathodes can react with Na ions via two-electron conversion reactions, thus achieving ultrahigh theoretical capacity (1672 mAh g
Publisher: Springer Science and Business Media LLC
Date: 22-10-2019
DOI: 10.1038/S41467-019-11600-3
Abstract: Polysulfide dissolution and slow electrochemical kinetics of conversion reactions lead to low utilization of sulfur cathodes that inhibits further development of room-temperature sodium-sulfur batteries. Here we report a multifunctional sulfur host, NiS 2 nanocrystals implanted in nitrogen-doped porous carbon nanotubes, which is rationally designed to achieve high polysulfide immobilization and conversion. Attributable to the synergetic effect of physical confinement and chemical bonding, the high electronic conductivity of the matrix, closed porous structure, and polarized additives of the multifunctional sulfur host effectively immobilize polysulfides. Significantly, the electrocatalytic behaviors of the Lewis base matrix and the NiS 2 component are clearly evidenced by operando synchrotron X-ray diffraction and density functional theory with strong adsorption of polysulfides and high conversion of soluble polysulfides into insoluble Na 2 S 2 /Na 2 S. Thus, the as-obtained sulfur cathodes exhibit excellent performance in room-temperature Na/S batteries.
Publisher: Wiley
Date: 03-01-2020
Abstract: Herein, we introduce a 4.0 V class high-voltage cathode material with a newly recognized sodium superionic conductor (NASICON)-type structure with cubic symmetry (space group P2
Publisher: Wiley
Date: 06-08-2018
Publisher: Elsevier BV
Date: 12-2015
Publisher: American Chemical Society (ACS)
Date: 11-02-2020
Publisher: American Chemical Society (ACS)
Date: 12-03-2015
DOI: 10.1021/CM504091Z
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA42044B
Publisher: Wiley
Date: 12-07-2023
Abstract: Exploiting dual‐functional photoelectrodes to harvest and store solar energy is a challenging but efficient way for achieving renewable energy utilization. Herein, multi‐heterostructures consisting of N‐doped carbon coated MoS 2 nanosheets supported by tubular TiO 2 with photoelectric conversion and electronic transfer interfaces are designed. When a photo sodium ion battery (photo‐SIB) is assembled based on the heterostructures, its capacity increases to 399.3 mAh g −1 with a high photo‐conversion efficiency of 0.71 % switching from dark to visible light at 2.0 A g −1 . Remarkably, the photo‐SIB can be recharged by light only, with a striking capacity of 231.4 mAh g −1 . Experimental and theoretical results suggest that the proposed multi‐heterostructures can enhance charge transfer kinetics, maintain structural stability, and facilitate the separation of photo‐excited carriers. This work presents a new strategy to design dual‐functional photoelectrodes for efficient use of solar energy.
Publisher: Wiley
Date: 12-08-2021
Abstract: The shuttle effect and sluggish conversion kinetics of lithium polysulfides (LiPS) h er the practical application of lithium–sulfur batteries (LSBs). Toward overcoming these limitations, herein an in situ grown C 2 N@NbSe 2 heterostructure is presented with remarkable specific surface area, as a Li–S catalyst and LiPS absorber. Density functional theory (DFT) calculations and experimental results comprehensively demonstrate that C 2 N@NbSe 2 is characterized by a suitable electronic structure and charge rearrangement that strongly accelerates the LiPS electrocatalytic conversion. In addition, heterostructured C 2 N@NbSe 2 strongly interacts with LiPS species, confining them at the cathode. As a result, LSBs cathodes based on C 2 N@NbSe 2 /S exhibit a high initial capacity of 1545 mAh g −1 at 0.1 C. Even more excitingly, C 2 N@NbSe 2 /S cathodes are characterized by impressive cycling stability with only 0.012% capacity decay per cycle after 2000 cycles at 3 C. Even at a sulfur loading of 5.6 mg cm −2 , a high areal capacity of 5.65 mAh cm −2 is delivered. These results demonstrate that C 2 N@NbSe 2 heterostructures can act as multifunctional polysulfide mediators to chemically adsorb LiPS, accelerate Li‐ion diffusion, chemically catalyze LiPS conversion, and lower the energy barrier for Li 2 S precipitation/decomposition, realizing the “adsorption‐diffusion‐conversion” of polysulfides.
Publisher: Wiley
Date: 26-07-2023
DOI: 10.1002/INF2.12475
Abstract: The pursuit of high energy density while achieving long cycle life remains a challenge in developing transition metal (TM) oxide cathode materials for sodium‐ion batteries (SIBs). Here, we present a concept of precisely manipulating structural evolution via local coordination chemistry regulation to design high‐performance composite cathode materials. The controllable structural evolution process is realized by tuning magnesium content in Na 0.6 Mn 1− x Mg x O 2 , which is elucidated by a combination of experimental analysis and theoretical calculations. The substitution of Mg into Mn sites not only induces a unique structural evolution from layered–tunnel structure to layered structure but also mitigates the Jahn–Teller distortion of Mn 3+ . Meanwhile, benefiting from the strong ionic interaction between Mg 2+ and O 2− , local environments around O 2− coordinated with electrochemically inactive Mg 2+ are anchored in the TM layer, providing a pinning effect to stabilize crystal structure and smooth electrochemical profile. The layered–tunnel Na 0.6 Mn 0.95 Mg 0.05 O 2 cathode material delivers 188.9 mAh g −1 of specific capacity, equivalent to 508.0 Wh kg −1 of energy density at 0.5C, and exhibits 71.3% of capacity retention after 1000 cycles at 5C as well as excellent compatibility with hard carbon anode. This work may provide new insights of manipulating structural evolution in composite cathode materials via local coordination chemistry regulation and inspire more novel design of high‐performance SIB cathode materials. image
Publisher: Elsevier BV
Date: 07-2016
Publisher: Wiley
Date: 25-05-2018
Publisher: American Chemical Society (ACS)
Date: 18-10-2022
Publisher: Wiley
Date: 18-09-2021
Abstract: Molybdenum carbide (Mo
Publisher: Elsevier BV
Date: 04-2015
Publisher: Wiley
Date: 29-06-2018
Abstract: The synthesis of transferrin (Tf)‐modified pegylated graphene (PG) and its application as a highly efficient drug delivery carrier for therapy of Ocular Choroidal Melanoma‐1 (OCM‐1) cells is presented. For the first reported time, nanoscaled PG is prepared using an environmentally friendly ball‐milling technique. The unique 2D nanostructure obtained using this PG synthesis approach offers considerable advantages in terms of drug loading and delivery, as well as the conjugation of Tf to PG providing a more targeted delivery vehicle. A highly efficient targeted pathway toward OCM‐1 cells triggered by an affinity between Tf and Tf receptors expressed on the surface of OCM‐1 cells is reported first here. PG‐Tf is observed to easily anchor anticancer drugs such as doxorubicin via π–π stacking. This work performs a Transwell two cells coculture experiment, a 3D in vitro tumor model, and an in vivo mouse model with OCM‐1 tumors to demonstrate the composite's therapeutic superiority over conventional systems for the targeted delivery and controlled release of antitumor drugs.
Publisher: Wiley
Date: 23-06-2022
Abstract: With a series of merits, Prussian blue analogs (PBAs) have been considered as superior cathode materials for sodium‐ion batteries (SIBs). Their commercialization, however, still suffers from inferior stability, considerable [Fe(CN) 6 ] defects and interstitial water in the framework, which are related to the rapid crystal growth. Herein, a “water‐in‐salt” nanoreactor is proposed to synthesize highly crystallized PBAs with decreased defects and water, which show both superior specific capacity and rate capability in SIBs. The air‐stability, all‐climate, and full‐cell properties of our PBA have also been evaluated, and it exhibits enhanced electrochemical performance and higher volume yield than its counterpart synthesized via the water‐based co‐precipitation method. Furthermore, their highly reversible sodium‐ion storage behavior has been measured and identified via multiple in situ techniques. This work could pave the way for the PBA‐based SIBs in grid‐scale energy‐storage systems.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0EE00527D
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TC00330G
Abstract: The morphology-controlled preparation of t -Ba 2 V 2 O 7 helical-like meso /nanosquares via a high-efficiency microwave radiation-assisted surfactant strategy and their unique magnetic performance as a function of particle size and reaction time were reported.
Publisher: American Chemical Society (ACS)
Date: 31-10-2008
DOI: 10.1021/CM801468Q
Publisher: Wiley
Date: 13-10-2021
Abstract: To reach a closed‐loop material system and meet the urgent requirement of sustainable energy storage technologies, it is essential to incorporate efficient waste management into designing new energy storage materials. Here, a “two birds with one stone” strategy to transform rusty iron products into Prussian blue as high‐performance cathode materials, and recover the rusty iron products to their original status, is reported. Owing to the high crystalline and Na + content, the rusty iron derived Prussian blue shows a high specific capacity of 145 mAh g −1 and excellent cycling stability over 3500 cycles. Through the in situ X‐ray diffraction and in situ Raman spectra, it is found that the impressive ion storage capability and stability are strongly related to the suppressed structure distortion during the charge/discharge process. The ion migration mechanism and the possibility to serve as a universal host for other kinds of ions are further illuminated by density functional theory calculations. This work provides a new strategy for recycling wasted materials into high value‐added materials for sustainable battery systems, and is adaptable in the nanomedicine, catalysis, sensors, and gas storage applications.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1QM00911G
Abstract: In this work, the Na + storage mechanism of golden berry leaf-derived hard carbon can be ided into three stages: adsorption, intercalation and filling, and the storage mechanism evolves with the increase of carbonization temperature.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4CC09604E
Abstract: A novel and low-cost FeP anode with a high capacity of 764.7 mA h g −1 is reported for sodium ion batteries.
Publisher: Wiley
Date: 23-09-2020
Publisher: Wiley
Date: 12-2017
Publisher: Wiley
Date: 16-11-2020
Publisher: Wiley
Date: 30-11-2020
Abstract: Hard carbon (HC) is recognized as a promising anode material with outstanding electrochemical performance for alkali metal‐ion batteries including lithium‐ion batteries (LIBs), as well as their analogs sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs). Herein, a comprehensive review of the recent research is presented to interpret the challenges and opportunities for the applications of HC anodes. The ion storage mechanisms, materials design, and electrolyte optimizations for alkali metal‐ion batteries are illustrated in‐depth. HC is particularly promising as an anode material for SIBs. The solid‐electrolyte interphase, initial Coulombic efficiency, safety concerns, and all‐climate performances, which are vital for practical applications, are comprehensively discussed. Furthermore, commercial prototypes of SIBs based on HC anodes are extensively elaborated. The remaining challenges and research perspectives are provided, aiming to shed light on future research and early commercialization of HC‐based SIBs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA14934J
Publisher: Wiley
Date: 19-02-2021
DOI: 10.1002/CEY2.101
Abstract: Rechargeable lithium/sodium–sulfur batteries working at room temperature (RT‐Li/S, RT‐Na/S) appear to be a promising energy storage system in terms of high theoretical energy density, low cost, and abundant resources in nature. They are, thus, considered as highly attractive candidates for future application in energy storage devices. Nevertheless, the solubility of sulfur species, sluggish kinetics of lithium/sodium sulfide compounds, and high reactivity of metallic anodes render these cells unstable. As a consequence, metal–sulfur batteries present low reversible capacity and quick capacity loss, which hinder their practical application. Investigations to address these issues regarding S cathodes are critical to the increase of their performance and our fundamental understanding of RT‐Li/S and RT‐Na/S battery systems. Metal–sulfur interactions, recently, have attracted considerable attention, and there have been new insights on pathways to high‐performance RT‐Li/Na sulfur batteries, due to the following factors: (1) deliberate construction of metal–sulfur interactions can enable a leap in capacity (2) metal–sulfur interactions can confine S species, as well as sodium sulfide compounds, to stop shuttle effects (3) traces of metal species can help to encapsulate a high loading mass of sulfur with high‐cost efficiency and (4) metal components make electrodes more conductive. In this review, we highlight the latest progress in sulfide immobilization via constructing metal bonding between various metals and S cathodes. Also, we summarize the storage mechanisms of Li/Na as well as the metal–sulfur interaction mechanisms. Furthermore, the current challenges and future remedies in terms of intact confinement and optimization of the electrochemical performance of RT‐Li/Na sulfur systems are discussed in this review.
Publisher: Elsevier BV
Date: 12-2011
Publisher: American Chemical Society (ACS)
Date: 30-10-2013
DOI: 10.1021/NL403053V
Abstract: Recently, sodium ion batteries (SIBs) have been given intense attention because they are the most promising alternative to lithium ion batteries for application in renewable power stations and smart grid, owing to their low cost, their abundant natural resources, and the similar chemistry of sodium and lithium. Elemental phosphorus (P) is the most promising anode materials for SIBs with the highest theoretical capacity of 2596 mA h g(-1), but the commercially available red phosphorus cannot react with Na reversibly. Here, we report that simply hand-grinding commercial microsized red phosphorus and carbon nanotubes (CNTs) can deliver a reversible capacity of 1675 mA h g(-1) for sodium ion batteries (SIBs), with capacity retention of 76.6% over 10 cycles. Our results suggest that the simply mixed commercial red phosphorus and CNTs would be a promising anode candidate for SIBs with a high capacity and low cost.
Publisher: Elsevier BV
Date: 10-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10751F
Abstract: Porous LaNi 0.9 Cu 0.1 O 3 nanosheets exhibit excellent performance in Li–O 2 batteries because of abundant lattice strain and the oxygen vacancy effect.
Publisher: Wiley
Date: 22-02-2013
Publisher: Elsevier BV
Date: 12-2015
Publisher: American Chemical Society (ACS)
Date: 06-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TA08590J
Abstract: The red phosphorus and graphene nanoplate composite delivered a high reversible capacity of 1146 mA h g −1 at a current density of 100 mA g −1 and an excellent cycling stability of 200 cycles with 92.5% capacity retention.
Publisher: American Chemical Society (ACS)
Date: 22-08-2016
Abstract: Molybdenum disulfide is popular for rechargeable batteries, especially in Li-ion batteries, because of its layered structure and relatively high specific capacity. In this paper, we report MoS2-C nanocomposites that are synthesized by a hydrothermal process, and their use as anode material for Li-ion batteries. Ascorbic acid is used as the carbon source, and the carbon contents can be tuned from 2.5 wt % to 16.2 wt %. With increasing of carbon content, the morphology of MoS2-C nanocomposites changes from nanoflowers to nanospheres, and the particle size is decreased from 200 to 60 nm. This change is caused by the chemical complex interaction of ascorbic acid. The MoS2-C nanocomposite with 8.4 wt % C features a high capacity of 970 mAh g(-1) and sustains a capacity retention ratio of nearly 100% after 100 cycles. When the current increases to 1000 mA g(-1), the capacity still reaches 730 mAh g(-1). The above manifests that the carbon coating layer does not only accelerate the charge transfer kinetics to supply quick discharging and charging, but also hold the integrity of the electrode materials as evidenced by the long cycling stability. Therefore, MoS2-based nanocomposites could be used as commercial anode materials in Li-ion batteries.
Publisher: Wiley
Date: 16-02-2015
Abstract: The nonaqueous lithium oxygen battery is a promising candidate as a next-generation energy storage system because of its potentially high energy density (up to 2-3 kW kg(-1)), exceeding that of any other existing energy storage system for storing sustainable and clean energy to reduce greenhouse gas emissions and the consumption of nonrenewable fossil fuels. To achieve high energy density, long cycling stability, and low cost, the air electrode structure and the electrocatalysts play important roles. Here, a metal-free, free-standing macroporous graphene@graphitic carbon nitride (g-C3N4) composite air cathode is first reported, in which the g-C3N4 nanosheets can act as efficient electrocatalysts, and the macroporous graphene nanosheets can provide space for Li2O2 to deposit and also promote the electron transfer. The electrochemical results on the graphene@g-C3N4 composite air electrode show a 0.48 V lower charging plateau and a 0.13 V higher discharging plateau than those of pure graphene air electrode, with a discharge capacity of nearly 17300 mA h g(-1)(composite) . Excellent cycling performance, with terminal voltage higher than 2.4 V after 105 cycles at 1000 mA h g(-1)(composite) capacity, can also be achieved. Therefore, this hybrid material is a promising candidate for use as a high energy, long-cycle-life, and low-cost cathode material for lithium oxygen batteries.
Publisher: Wiley
Date: 30-08-2019
Abstract: Two-dimensional (2D) superlattices offer promising technological opportunities in tuning the intercalation chemistry of metal ions. Now, well-ordered 2D superlattices of monolayer titania and carbon with tunable interlayer-spacing are synthesized by a molecularly mediated thermally induced approach. The 2D superlattices are vertically encapsulated in hollow carbon nanospheres, which are embedded with TiO
Publisher: Wiley
Date: 03-2021
Publisher: American Chemical Society (ACS)
Date: 18-06-2019
Publisher: Elsevier BV
Date: 09-2014
Publisher: Wiley
Date: 23-02-2023
Abstract: Aqueous zinc‐ion batteries (ZIBs) are among the most promising next‐generation energy storage systems due to their high level of safety, environmental friendliness, and low cost. However, the dendritic growth of Zn deposition leads to low Coulombic efficiency and severe capacity degradation, which limits their large‐scale application. In this study, silicon nanoparticles are used as electrolyte additives which can regulate the uniform electrodeposition of Zn by the formation of SiOZn bonds. Theoretical calculations and experimental investigations demonstrate that the silicon layer regulates the interfacial charge distribution, resulting in a lower nucleation energy barrier for the Zn anode. Consequently, Zn|Zn symmetric cells with nano‐Si electrolyte additives achieve remarkable cycling stability for 1250 cycles at 5 mA cm −2 . When coupled with NaV 3 O 8 cathodes, the resulting ZIBs deliver a high reversible capacity of 250 mAh g −1 and significantly improved capacity retention after long‐term cycles.
Publisher: Wiley
Date: 28-11-2019
Publisher: Wiley
Date: 20-12-2017
Abstract: Clean energy has become an important topic in recent decades because of the serious global issues related to the development of energy, such as environmental contamination, and the intermittence of the traditional energy sources. Creating new battery-related energy storage facilities is an urgent subject for human beings to address and for solutions for the future. Compared with lithium-based batteries, sodium-ion batteries have become the new focal point in the competition for clean energy solutions and have more potential for commercialization due to the huge natural abundance of sodium. Nevertheless, sodium-ion batteries still exhibit some challenges, like inferior electrochemical performance caused by the bigger ionic size of Na
Publisher: Springer Science and Business Media LLC
Date: 27-10-2017
Publisher: Wiley
Date: 17-03-2021
Publisher: Wiley
Date: 09-2019
Publisher: Wiley
Date: 07-04-2023
Abstract: The achievement of bifunctional metal‐organic frameworks (MOFs) remains a huge challenge due to their lack of dual active sites. Herein, dual sites in the Co‐catecholate (Co‐CAT) are created through Ru, Ir, or Rh doping for overall water splitting. Among them, RuCo‐CAT exhibits excellent bifunctional activities, outperforming benchmarked Pt/C for the hydrogen evolution reaction (HER) and RuO 2 for the oxygen evolution reaction (OER). The theoretical calculations demonstrate that the doped Ru atoms with optimal absorption energy for the hydrogen intermediate and the Co centers with a reduced energy barrier for the rate‐determining step are the active sites for HER and OER, respectively. Furthermore, the incorporation of Ru atoms can improve the electrical conductivity and capacity of water adsorption of Co‐CAT greatly, synergistically improving the bifunctional activity. This strategy for engineering dual active sites offers novel insights into designing bifunctional MOFs for overall water splitting.
Publisher: Wiley
Date: 23-09-2020
Publisher: American Chemical Society (ACS)
Date: 27-06-2022
Abstract: The shuttling of soluble lithium polysulfides (LiPS) and the sluggish Li-S conversion kinetics are two main barriers toward the practical application of lithium-sulfur batteries (LSBs). Herein, we propose the addition of copper selenide nanoparticles at the cathode to trap LiPS and accelerate the Li-S reaction kinetics. Using both computational and experimental results, we demonstrate the crystal phase and concentration of copper vacancies to control the electronic structure of the copper selenide, its affinity toward LiPS chemisorption, and its electrical conductivity. The adjustment of the defect density also allows for tuning the electrochemically active sites for the catalytic conversion of polysulfide. The optimized S/Cu
Publisher: Wiley
Date: 09-06-2022
Abstract: Transition‐metal alloys are currently drawing increasing attention as promising electrocatalysts for the alkaline hydrogen evolution reaction (HER). However, traditional density‐functional‐theory‐derived d ‐band theory fails to describe the hydrogen adsorption energy (Δ G H ) on hollow sites. Herein, by studying the Δ G H for a series of Ni−M (M=Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Mo, W) bimetallic alloys, an improved d ‐band center was provided and a potential NiCu electrocatalyst with a near‐optimal Δ G H was discovered. Moreover, oxygen atoms were introduced into Ni−M (O−NiM) to balance the adsorption/desorption of hydroxyl species. The tailored electrocatalytic sites for water dissociation can synergistically accelerate the multi‐step alkaline HER. The prepared O−NiCu shows the optimum HER activity with a low overpotential of 23 mV at 10 mA cm −2 . This work not only broadens the applicability of d ‐band theory, but also provides crucial understanding for designing efficient HER electrocatalysts.
Publisher: Wiley
Date: 18-12-2021
DOI: 10.1002/INF2.12260
Abstract: Aprotic lithium‐oxygen (Li‐O 2 ) batteries represent a promising next‐generation energy storage system due to their extremely high theoretical specific capacity compared with all known batteries. Their practical realization is impeded, however, by the sluggish kinetics for the most part, resulting in high overpotential and poor cycling performance. Due to the high catalytic activity and favorable stability of Co‐based transition metal oxides, they are regarded as the most likely candidate catalysts, facilitating researchers to solve the sluggish kinetics issue. Herein, this review first presents recent advanced design strategies for Co‐based transition metal oxides in Li‐O 2 batteries. Then, the fundamental insights related to the catalytic processes of Co‐based transition metal oxides in traditional and novel Li‐O 2 electrochemistry systems are summarized. Finally, we conclude with the current limitations and future development directions of Co‐based transition metal oxides, which will contribute to the rational design of catalysts and the practical applications of Li‐O 2 batteries. image
Publisher: American Chemical Society (ACS)
Date: 17-01-2017
Abstract: The tunnel-structured Na
Publisher: Elsevier BV
Date: 06-2013
Publisher: Wiley
Date: 28-08-2023
Abstract: Hard carbon anodes with all‐plateau capacities below 0.1 V are prerequisites to achieve high‐energy‐density sodium‐ion storage, which holds promise for future sustainable energy technologies. However, challenges in removing defects and improving the insertion of sodium ions head off the development of hard carbon to achieve this goal. Herein, a highly cross‐linked topological graphitized carbon using biomass corn cobs through a two‐step rapid thermal‐annealing strategy is reported. The topological graphitized carbon constructed with long‐range graphene nanoribbons and cavities/tunnels provides a multidirectional insertion of sodium ions whilst eliminating defects to absorb sodium ions at the high voltage region. Evidence from advanced techniques including in situ XRD, in situ Raman, and in situ/ex situ transmission electron microscopy (TEM) indicates that the sodium ions' insertion and Na cluster formation occurred between curved topological graphite layers and in the topological cavity of adjacent graphite band entanglements. The reported topological insertion mechanism enables outstanding battery performance with a single full low‐voltage plateau capacity of 290 mAh g −1 , which is almost 97% of the total capacity.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1SC05781B
Abstract: The structure–function relationships between heterostructures and their catalytic properties were discussed in detail, and the challenges and improvement strategies for heterostructure based cathodes towards Li–O 2 catalysis were also summarized.
Publisher: Wiley
Date: 02-2019
Publisher: Elsevier BV
Date: 12-2021
Publisher: Wiley
Date: 05-11-2021
Abstract: Prussian blue analogs (PBAs), as promising cathode materials for sodium‐ion batteries (SIBs), have received extensive research interest due to their appealing characteristics, e.g., the low cost of their raw materials, easy manufacturing, open frameworks, and high theoretical specific capacity. There are some challenges for PBAs cathodes, however, hindering their performance output, making them currently unacceptable for practical applications. To improve the performance and cycling stability of PBAs, a clear in‐depth understanding of the relationship of their electrochemical reaction process to their ion insertion/extraction mechanisms and structural evolution is extremely important. Nowadays, advanced characterization techniques have become an important tool to guide the construction of high‐performance PBAs cathodes. In this review, the various advances by using advanced characterization techniques to reveal the reaction mechanisms for PBAs cathodes are summarized and discussed. By appreciating how the advanced characterization techniques to guide fabrication of high‐performance PBAs or reveal their detailed reaction mechanisms, it is hoped that this review can assist readers to find more valuable and advanced technologies to help to resolve some key problems and enhance their performance so as to accelerate the practical application of PBAs cathode for SIBs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2SC04217G
Abstract: An ultrahigh power density ( kW kg −1 ) potassium-ion full cell was fabricated by using a designed Bi@C composite as the anode. This workproves that potassium-ion batteries are promising candidates for power-type large-scale energy storage devices.
Publisher: Wiley
Date: 27-05-2020
Publisher: Wiley
Date: 18-02-2020
Publisher: Wiley
Date: 21-07-2019
DOI: 10.1002/INF2.12023
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA04366B
Abstract: Sodium-ion batteries (SIBs) have been attracting intensive attention at present as the most promising alternative to lithium-ion batteries in large-scale electrical energy storage applications, due to the low-cost and natural abundance of sodium.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA18314F
Abstract: Our results suggest that by using a low-energy ball-milling method, a promising FeP/graphite anode material can be synthesized for the sodium battery.
Publisher: Elsevier BV
Date: 11-2009
Publisher: Wiley
Date: 02-05-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE00087J
Abstract: The guest-ion disordered and quasi-zero-strain nonequilibrium solid–solution reaction mechanism provides an effective guarantee for realizing long-cycle life and high-rate capability electrode materials.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA10301E
Abstract: Building a combined interface in a Li 2 S cathode-based battery by integrating SPEEK into the cathode and inserting a SWCNT/rGO interlayer develops a new strategy from the viewpoint of interface engineering to achieve a high-performance Li–S battery.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CC01125H
Abstract: Interconnected nanoporous RuO 2 nanogranulates coated with a few layers of carbon enable high-performance Li–O 2 batteries with high stability.
Publisher: Wiley
Date: 06-05-2019
Publisher: Wiley
Date: 13-05-2020
Publisher: Elsevier BV
Date: 02-2022
Publisher: Lab Academic Press
Date: 2022
Abstract: Sodium-ion batteries are considered to be a future alternative to lithium-ion batteries because of their low cost and abundant resources. In recent years, the research of sodium-ion batteries in flexible energy storage systems has attracted widespread attention. However, most of the current research on flexible sodium ion batteries is mainly focused on the preparation of flexible electrode materials. In this paper, the challenges faced in the preparation of flexible electrode materials for sodium ion batteries and the evaluation of device flexibility is summarized. Several important parameters including cycle-calendar life, energy ower density, safety, flexible, biocompatibility and multifunctional intergration of current flexible sodium ion batteries will be described mainly from the application point of view. Finally, the promising current applications of flexible sodium ion batteries are summarized.
Publisher: Wiley
Date: 11-11-2019
Publisher: Wiley
Date: 06-04-2021
Abstract: High initial coulombic efficiency is highly desired because it implies effective interface construction and few electrolyte consumption, indicating enhanced batteries’ life and power output. In this work, a high‐capacity sodium storage material with FeS 2 nanoclusters (≈1–2 nm) embedded in N, S‐doped carbon matrix (FeS 2 /N,S‐C) was synthesized, the surface of which displays defects‐repaired characteristic and detectable dot‐matrix distributed Fe‐N‐C/Fe‐S‐C bonds. After the initial discharging process, the uniform ultra‐thin NaF‐rich (≈6.0 nm) solid electrolyte interphase was obtained, thereby achieving verifiable ultra‐high initial coulombic efficiency (≈92 %). The defects‐repaired surface provides perfect platform, and the catalysis of dot‐matrix distributed Fe‐N‐C/Fe‐S‐C bonds to the rapid decomposing of NaSO 3 CF 3 and diethylene glycol dimethyl ether successfully accelerate the building of two‐dimensional ultra‐thin solid electrolyte interphase. DFT calculations further confirmed the catalysis mechanism. As a result, the constructed FeS 2 /N,S‐C provides high reversible capacity (749.6 mAh g −1 at 0.1 A g −1 ) and outstanding cycle stability (92.7 %, 10 000 cycles, 10.0 A g −1 ). Especially, at −15 °C, it also obtains a reversible capacity of 211.7 mAh g −1 at 10.0 A g −1 . Assembled pouch‐type cell performs potential application. The insight in this work provides a bright way to interface design for performance improvement in batteries.
Publisher: Wiley
Date: 16-05-2022
Abstract: Aqueous rechargeable batteries (ARBs) are provided with the merits of low cost, inherent security, environmental friendliness, and excellent electrochemical properties. Among various aqueous battery systems, aqueous ammonium‐ion batteries (AIBs) have shown great potential in low‐cost energy storage systems for future large‐scale smart grid applications due to their unique advantages including resource affordability and quite competitive electrochemical performance and received extensive research attention during recent years. Their unique battery chemistry also brings new insights and understanding into exploration of electrode and battery design. However, research on aqueous AIBs is still in its infancy and there are still many scientific issues in AIBs system worth exploring. In this paper, the latest developments in electrode materials, electrolytes, and battery chemistry in AIBs are reviewed in detail timely. Then further challenges and opportunities are pointed out.
Publisher: Elsevier BV
Date: 07-2010
Publisher: Wiley
Date: 02-09-2019
Abstract: Li-rich Mn-based oxides (LRMO) are promising cathode materials to build next-generation lithium-ion batteries with high energy density exceeding 400 W h kg
Publisher: Wiley
Date: 27-05-2022
Abstract: Organic materials have attracted much attention in sodium ion batteries (SIBs) because of their advantages such as being environmentally benign and having high designability. Capacities and cycle life of organic materials are the most important parameters in most research which has been paid much effort to obtain an impressive electrochemical performance on the material level, and the sodium‐detachable ability of these materials to directly match with the sodium‐free anode is neglected. In this work, one organic sodium salt (C 6 H 2 Na 2 O 6 ) exhibits the unique ability (charging first in half cell) unlike other reported organic cathode materials (normally discharging first) for SIBs. The redox mechanism and structure change are investigated by in situ and ex situ tests to give a better understanding for C 6 H 2 Na 2 O 6 . Satisfying electrochemical performance (74% capacity retention after 600 cycles at 0.05 A g −1 and 63% capacity retention at 5 A g −1 when compared with capacity at 0.05 A g −1 ) is achieved by the C 6 H 2 Na 2 O 6 electrode. In addition, matched with hard carbon, full cells are assembled successfully like other transition metal containing cathode materials because C 6 H 2 Na 2 O 6 electrode can deliver its sodium ions to a sodium‐free anode directly without any presodiation.
Publisher: Oxford University Press (OUP)
Date: 04-04-2017
DOI: 10.1093/NSR/NWX037
Abstract: The membrane separator is a key component in a liquid-electrolyte battery for electrically separating the cathode and the anode, meanwhile ensuring ionic transport between them. Besides these basic requirements, endowing the separator with specific beneficial functions is now being paid great attention because it provides an important alternative approach for the development of batteries, particularly next-generation high-energy rechargeable batteries. Herein, functional separators are overviewed based on four key criteria of next-generation high-energy rechargeable batteries: stable, safe, smart and sustainable (4S). That is, the applied membrane materials and the corresponding functioning mechanisms of the 4S separators are reviewed. Functional separators with selective permeability have been applied to retard unwanted migration of the specific species (e.g. polysulfide anions in Li-S batteries) from one electrode to the other in order to achieve stable cycling operation. The covered battery types are Li-S, room-temperature Na-S, Li-organic, organic redox-flow (RF) and Li-air batteries. Safe, smart and sustainable separators are then described in sequence following the first criterion of stable cycling. In the final section, key challenges and potential opportunities in the development of 4S separators are discussed.
Publisher: Wiley
Date: 20-11-2022
Abstract: Iron‐based Prussian blue analogs (Fe‐PBAs) are extensively studied as promising cathode materials for rechargeable sodium‐ion batteries owing to their high theoretical capacity, low‐cost and facile synthesis method. However, Fe‐PBAs suffer poor cycle stability and low specific capacity due to the low crystallinity and irreversible phase transition during excess sodium‐ion storage. Herein, a modified co‐precipitation method to prepare highly crystallized PBAs is reported. By introducing an electrochemical inert element (Zn) to substitute the high‐spin Fe in the Fe‐PBAs (ZnFeHCF‐2), the depth of charge/discharge is rationally controlled to form a highly reversible phase transition process for sustainable sodium‐ion storage. Minor lattice distortion and highly reversible phase transition process of ZnFeHCF‐2 during the sodium‐ions insertion and extraction are proved by in‐situ tests, which have significantly impacted the cycling stability. The ZnFeHCF‐2 shows a remarkably enhanced cycling performance with capacity retention of 58.5% over 2000 cycles at 150 mA g −1 as well as superior rate performance up to 6000 mA g −1 (fast kinetics). Furthermore, the successful fabrication of the full cell on the as‐prepared cathode and commercial hard carbon anode demonstrates their potential as high‐performance electrode materials for large‐scale energy storage systems.
Publisher: Wiley
Date: 02-01-2019
Abstract: Room-temperature sodium-sulfur (RT-Na/S) batteries hold significant promise for large-scale application because of low cost of both sodium and sulfur. However, the dissolution of polysulfides into the electrolyte limits practical application. Now, the design and testing of a new class of sulfur hosts as transition-metal (Fe, Cu, and Ni) nanoclusters (ca. 1.2 nm) wreathed on hollow carbon nanospheres (S@M-HC) for RT-Na/S batteries is reported. A chemical couple between the metal nanoclusters and sulfur is hypothesized to assist in immobilization of sulfur and to enhance conductivity and activity. S@Fe-HC exhibited an unprecedented reversible capacity of 394 mAh g
Publisher: Wiley
Date: 29-04-2022
DOI: 10.1002/CEY2.197
Abstract: The shell structure design has been recognized as a highly efficient strategy to buffer the severe volume expansion and consecutive pulverization of conversion‐type anodes. Nevertheless, construction of a functional shell with a stabilized structure that meets the demands of both high electronic conductivity and feasible pathways for Na + ions has been a challenge so far. Herein, we design a two‐in‐one shell configuration for bimetal selenides to achieve fast sodium storage within broadened voltage windows. The hybridized shell, which benefits from the combination of titanium dioxide quantum dots and amorphous carbon, can not only effectively buffer the strain and maintain structural integrity but also allow facile and reversible transport of electrons and Na + uptake for electrode materials during sodiation/desodiation processes, resulting in increased reaction kinetics and diffusion of sodium ions, conferring many benefits to the functionality of conversion‐type electrode materials. As a representative material, Ni‐CoSe 2 with such structural engineering shows a reversible capacity of 515 mAh g −1 at 0.1 A g −1 and a stable capacity of 416 mAh g −1 even at 6.4 A g −1 more than 80% of the capacity at 0.1 A g −1 could be preserved, so that this strategy holds great promise for designing fast‐charging conversion‐type anodes in the future.
Publisher: Elsevier BV
Date: 11-2009
Publisher: Springer Science and Business Media LLC
Date: 24-07-2019
DOI: 10.1038/S41557-019-0298-6
Abstract: The precise control of the morphology of inorganic materials during their synthesis is important yet challenging. Here we report that the morphology of a wide range of inorganic materials, grown by rapid precipitation from a metal cation solution, can be tuned during their crystallization from one- to three-dimensional (1D to 3D) structures without the need for capping agents or templates. This control is achieved by adjusting the balance between the electrolytic dissociation (α) of the reactants and the supersaturation (S) of the solutions. Low-α, weak electrolytes promoted the growth of anisotropic (1D and 2D) s les, with 1D materials favoured in particular at low S. In contrast, isotropic 3D polyhedral structures could only be prepared in the presence of strong electrolyte reactants (α ≈ 1) with low S. Using this strategy, a wide range of materials were prepared, including metal oxides, hydroxides, carbonates, molybdates, oxalates, phosphates, fluorides and iodate with a variety of morphologies.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA01033D
Abstract: A new lithium–sulphur battery with a hydrothermally treated graphite film sandwiched between the separator and the sulphur cathode shows increased capacity, enhanced cycling stability and improved coulombic efficiency.
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 31-03-2023
Abstract: Hard carbon (HC) anodes have shown extraordinary promise for sodium‐ion batteries, but are limited to their poor initial coulombic efficiency (ICE) and low practical specific capacity due to the large amount of defects. These defects with oxygen containing groups cause irreversible sites for Na + ions. Highly graphited carbon decreases defects, while potentially blocking diffusion paths of Na + ions. Therefore, molecular‐level control of graphitization of hard carbon with open accessible channels for Na + ions is key to achieve high‐performance hard carbon. Moreover, it is challenging to design a conventional method to obtain HCs with both high ICE and capacity. Herein, a universal strategy is developed as manganese ions‐assisted catalytic carbonization to precisely tune graphitization degree, eliminate defects, and maintain effective Na + ions paths. The as‐prepared hard carbon has a high ICE of 92.05% and excellent cycling performance. Simultaneously, a sodium storage mechanism of “adsorption‐intercalation‐pore filling‐sodium cluster formation” is proposed, and a clear description given of the boundaries of the pore structure and the specific dynamic process of pore filling.
Publisher: Elsevier BV
Date: 03-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA10633B
Abstract: The first synthesis of a nanosized NbO/Cu hybrid composite coated by N-doped carbon and anchored onto reduced graphene oxide is reported for high performance Li/Na storage.
Publisher: American Chemical Society (ACS)
Date: 16-07-2020
Publisher: Springer Science and Business Media LLC
Date: 11-03-2011
DOI: 10.1557/JMR.2011.12
Publisher: Wiley
Date: 17-03-2017
Publisher: Wiley
Date: 08-10-2021
Abstract: Metal–organic frameworks (MOFs) with intrinsically porous structures and well‐dispersed metal sites are promising candidates for electrocatalysis however, the catalytic efficiencies of most MOFs are significantly limited by their impertinent adsorption/desorption energy of intermediates formed during electrocatalysis and very low electrical conductivity. Herein, Co is introduced into conductive Cu‐catecholate (Cu‐CAT) nanorod arrays directly grown on a flexible carbon cloth for hydrogen evolution reaction (HER). Electrochemical results show that the Co‐incorporated Cu‐CAT nanorod arrays only need 52 and 143 mV overpotentials to drive a current density of 10 mA cm −2 in alkaline and neutral media for HER, respectively, much lower than most of the reported non‐noble metal‐based electrocatalysts and comparable to the benchmark Pt/C electrocatalyst. Density functional theory calculations show that the introduction of Co can optimize the adsorption energy of hydrogen (Δ G H* ) of Cu sites, almost close to that of Pt (111). Furthermore, the adsorption energy of water () of Co sites in the CuCo‐CAT is significantly lower than that of Cu sites upon coupling Cu with Co, effectively accelerating the Volmer step in the HER process. The findings, synergistic effect of bimetals, open a new avenue for the rational design of highly efficient MOF‐based electrocatalysts.
Publisher: Elsevier BV
Date: 11-2006
Publisher: American Chemical Society (ACS)
Date: 14-12-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA12306B
Abstract: An unprecedented shuttle-like Fe 3 O 4 –Co 3 O 4 self-assembling architecture is obtained through a facile hydrothermal method. Obviously, the electrochemical performance of the obtained composite is large enhanced in comparison with that of pristine Co 3 O 4 .
Publisher: Wiley
Date: 16-03-2016
Abstract: Hierarchical SnO2 hollow spheres self-assembled from nanosheets were prepared with and without carbon coating. The combination of nanosized architecture, hollow structure, and a conductive carbon layer endows the SnO2 -based anode with improved specific capacity and cycling stability, making it more promising for use in lithium ion batteries.
Publisher: American Chemical Society (ACS)
Date: 17-06-2022
Abstract: Improving the electrochemical kinetics and the intrinsic poor conductivity of transition metal dichalcogenide (TMD) electrodes is meaningful for developing next-generation energy storage systems. As one of the most promising TMD anode materials, ReS
Publisher: Wiley
Date: 28-01-2022
Abstract: The shuttling behavior and sluggish conversion kinetics of the intermediate lithium polysulfides (LiPS) represent the main obstructions to the practical application of lithium–sulfur batteries (LSBs). Herein, a 1D π–d conjugated metal–organic framework (MOF), Ni‐MOF‐1D, is presented as an efficient sulfur host to overcome these limitations. Experimental results and density functional theory calculations demonstrate that Ni‐MOF‐1D is characterized by a remarkable binding strength for trapping soluble LiPS species. Ni‐MOF‐1D also acts as an effective catalyst for S reduction during the discharge process and Li 2 S oxidation during the charging process. In addition, the delocalization of electrons in the π–d system of Ni‐MOF‐1D provides a superior electrical conductivity to improve electron transfer. Thus, cathodes based on Ni‐MOF‐1D enable LSBs with excellent performance, for ex le, impressive cycling stability with over 82% capacity retention over 1000 cycles at 3 C, superior rate performance of 575 mAh g −1 at 8 C, and a high areal capacity of 6.63 mAh cm −2 under raised sulfur loading of 6.7 mg cm −2 . The strategies and advantages here demonstrated can be extended to a broader range of π–d conjugated MOFs materials, which the authors believe have a high potential as sulfur hosts in LSBs.
Publisher: Elsevier BV
Date: 03-2021
Publisher: Wiley
Date: 09-06-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE00271F
Abstract: This review provides key scientific points and critical barriers for electrochemical ESSs under various extreme conditions, and corresponding rational strategies and promising directions to maintain satisfactory performance.
Publisher: American Chemical Society (ACS)
Date: 31-03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA09373G
Abstract: A delicate method is developed to embed WS 2 nanosheets into lotus rhizome-like heteroatom-doped carbon nanofibers with abundant hierarchical tubes inside. The nanofibers exhibit enhanced performance in sodium-ion batteries.
Publisher: Wiley
Date: 07-10-2021
Abstract: Organic electroactive compounds hold great potential to act as cathode material for organic sodium‐ion batteries (OSIBs) because of their environmental friendliness, sustainability, and high theoretical capacity. Although some organic electrodes have been developed with good performance, their practical application is still obstructed by some inherent drawbacks such as low conductivity and solubility in organic electrolytes. In addition, research on OSIBs has been mainly focused on the performance of electrodes on the material level and neglected the trade‐off relationship between the high redox potentials and specific capacities. Almost all organic cathodes used in OSIBs lack the ability to be charged first in half‐cells because of the absence of detachable sodium ions, resulting in low attractiveness when assembling full cells with hard carbon as anode. Here, this review presents several existing reaction mechanisms in OSIBs and designs of organic cathode materials. Furthermore, strategies are proposed in order to provide guidelines for improving their performance according to some critical parameters (output voltage, specific capacity, and cycle life) in potential practical OSIBs, and some accounts of organic materials assembled in full cells are summarized. Finally, the challenges and prospects of organic electrodes for OSIBs are also discussed in this review.
Publisher: Elsevier BV
Date: 04-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA13592F
Publisher: American Chemical Society (ACS)
Date: 11-09-2023
Publisher: Elsevier BV
Date: 12-2014
Publisher: Wiley
Date: 21-02-2019
Publisher: Elsevier BV
Date: 12-2021
Publisher: Wiley
Date: 30-04-2018
Abstract: With the serious impact of fossil fuels on the environment and the rapid development of the global economy, the development of clean and usable energy storage devices has become one of the most important themes of sustainable development in the world today. Supercapacitors are a new type of green energy storage device, with high power density, long cycle life, wide temperature range, and both economic and environmental advantages. In many industries, they have enormous application prospects. Electrode materials are an important factor affecting the performance of supercapacitors. MnO
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA03911H
Abstract: Germanium dioxide is a promising high-capacity anode material for lithium-ion batteries, but it usually exhibits poor cycling stability due to its large volume change during the lithiation/delithiation process.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 06-05-2016
Abstract: Liu et al . (Research Article, 30 October 2015, p. 530) described a lithium-oxygen (Li-O 2 ) battery based on lithium iodide (LiI)–assisted lithium hydroxide (LiOH) formation and decomposition. We argue that LiOH cannot be oxidized by triiodide (I 3 – ). The charge capacity is from the oxidation of I – instead of LiOH. The limited-capacity cycling test is misleading when the electrolyte contributes considerable parasitic reaction capacity.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA06001F
Abstract: Na 3 V 2 (PO 4 ) 3 particles partly embedded in carbon nanofibers enabled fast electronic conduction as well as facile Na ion migration simultaneously. As a result, the composite showed excellent electrochemical properties as a cathode material for sodium ion batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM32649C
Publisher: Wiley
Date: 05-05-2021
Abstract: Most of the cathode materials for potassium ion batteries (PIBs) suffer from poor structural stability due to the large ionic radius of K + , resulting in poor cycling stability. Here we report a low‐strain potassium‐rich K 1.84 Ni[Fe(CN) 6 ] 0.88 ⋅0.49 H 2 O (KNiHCF) as a cathode material for PIBs. The as‐prepared KNiHCF cathode can deliver reversible discharge capacity of 62.8 mAh g −1 at 100 mA g −1 , with a high discharge voltage of 3.82 V. It can also achieve a superior rate performance of 45.8 mAh g −1 at 5000 mA g −1 , with a capacity retention of 88.6 % after 100 cycles. The superior performance of KNiHCF cathode results from low‐strain de‐/intercalation mechanism, intrinsic semiconductor property and low potassium diffusion energy barrier. The high power density and long‐term stability of KNiHCF//graphite full cell confirmed the feasibility of K‐rich KNiHCF cathode in PIBs. This work provides guidance to develop Prussian blue analogues as cathode materials for PIBs.
Publisher: American Chemical Society (ACS)
Date: 09-06-2021
Publisher: Wiley
Date: 29-03-2017
Abstract: Rechargeable sodium-ion batteries are proposed as the most appropriate alternative to lithium batteries due to the fast consumption of the limited lithium resources. Due to their improved safety, polyanion framework compounds have recently gained attention as potential candidates. With the earth-abundant element Fe being the redox center, the uniform carbon-coated Na
Publisher: Wiley
Date: 08-12-2020
Publisher: Wiley
Date: 12-07-2023
Abstract: The initial Coulombic efficiency (ICE) of electrode materials is closely related to the energy density of lithium‐ion batteries (LIBs). However, some promising electrode materials for next generation LIBs suffer from low ICE, which inevitably hinders their practical application. Among the discovered modified strategies for LIBs, electrolyte optimization has attracted extensive attention due to its facile operation process. Herein, the role of ICE in LIBs is first analyzed. Subsequently, the recent progress on effective electrolyte optimization strategies for boosting ICE in LIB is summarized (including the optimization of lithium salt, salt concentration, solvent, and electrolyte additive). Finally, future research directions of electrolyte optimization for boosting ICE are proposed. This review provides valuable guidance for developing advanced electrolyte for LIBs.
Publisher: Wiley
Date: 03-06-2021
Abstract: Room‐temperature sodium–sulfur (RT Na–S) batteries have attracted extensive attention because of their low cost and high specific energy. RT Na–S batteries, however, usually suffer from sluggish reaction kinetics, low reversible capacity, and short lifespans. Herein, it is shown that chain‐mail catalysts, consisting of porous nitrogen doped carbon nanofibers (PCNFs) encapsulating Co nanoparticles (Co@PCNFs), can activate sulfur via electron engineering. The chain‐mail catalysts Co@PCNFs with a micrograde hierarchical structure as a freestanding sulfur cathode (Co@PCNFs/S) can provide space for high mass loading of sulfur and polysulfides. The electrons can rapidly transfer from chain‐mail catalysts to sulfur and polysulfides during discharge–charge processes, therefore boosting its conversion kinetics. As a result, this freestanding Co@PCNFs/S cathode achieves a high sulfur loading of 2.1 ± 0.2 mg cm −2 , delivering a high reversible capacity of 398 mA h g −1 at 0.5 C (1 C = 1675 mA g −1 ) over 600 cycles and superior rate capability of an average capacity of 240 mA h g −1 at 5 C. Experimental results, combined with density functional theory calculations, demonstrate that the Co@PCNFs/S can efficiently improve the conversion kinetics between the polysulfides and Na 2 S via transferring electrons from Co to them, thereby realizing efficient sulfur redox reactions.
Publisher: Wiley
Date: 29-11-2021
Abstract: Lithium-ion batteries (LIBs) are widely used in electric vehicles and portable electronic devices due to their high energy density, long cycle life, environmental friendliness, and negligible memory effect, though they also suffer from low power density, safety issues, and an aging effect. Cobalt chalcogenides hosphides as promising anode materials have attracted intensive interests due to their high theoretical capacity based on the conversion mechanism. Cobaltates (XCo
Publisher: Wiley
Date: 06-04-2020
Publisher: American Chemical Society (ACS)
Date: 17-10-2017
Abstract: Carbon-encapsulated Sn@N-doped carbon tubes with submicron diameters were obtained via the simple reduction of C@SnO
Publisher: American Scientific Publishers
Date: 02-2013
Abstract: CuS nanostructured materials, including nanoflakes, microspheres composed of nanoflakes, microflowers, and nanowires have been selectively synthesized by a facile hydrothermal method using CuSO4 and thiourea as precursors under different conditions. The morphology of CuS particles were affected by the following synthetic parameters: temperature, time, surfactant, pH value, solvent, and concentration of the two precursors. The synthesized CuS nanomaterials were characterized by X-ray diffraction, Brunauer-Emmett-Teller N2 adsorption, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The electrochemical tests, including constant current charge-discharge and cyclic voltammetry, show the specific capacities of the different morphologies, as well as their rate capability. The nanowire electrode has near theoretical specific capacity and the best rate capability.
Publisher: Springer Science and Business Media LLC
Date: 23-03-2016
Publisher: Wiley
Date: 13-07-2021
Abstract: Manganese‐based Prussian Blue, Na 2−δ Mn[Fe(CN) 6 ] (MnPB), is a good candidate for sodium‐ion battery cathode materials due to its high capacity. However, it suffers from severe capacity decay during battery cycling due to the destabilizing Jahn–Teller distortions it undergoes as Mn 2+ is oxidized to Mn 3+ . Herein, the structure is stabilized by a thin epitaxial surface layer of nickel‐based Prussian Blue (Na 2−δ Ni[Fe(CN) 6 ]). The one‐pot synthesis relies on a chelating agent with an unequal affinity for Mn 2+ and Ni 2+ ions, which prevents Ni 2+ from reacting until the Mn 2+ is consumed. This is a new and simpler synthesis of core–shell materials, which usually needs several steps. The material has an electrochemical capacity of 93 mA h g −1 , of which it retains 96 % after 500 charge–discharge cycles (vs. 37 % for MnPB). Its rate capability is also remarkable: at 4 A g −1 (ca. 55 C) it can reversibly store 70 mA h g −1 , which is also reflected in its diffusion coefficient of ca. 10 −8 cm 2 s −1 . The epitaxial outer layer appears to exert an anisotropic strain on the inner layer, preventing the Jahn–Teller distortions it normally undergoes during de‐sodiation.
Publisher: Wiley
Date: 16-05-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA04374C
Abstract: B 4 C nanowire, a novel bifunctional electrocatalyst, is used as an electrocatalyst for Li–O 2 batteries, with favourable rechargeability, and high round-trip efficiency.
Publisher: MDPI AG
Date: 29-06-2021
Abstract: The hybrid ion capacitor (HIC) is a hybrid electrochemical energy storage device that combines the intercalation mechanism of a lithium-ion battery anode with the double-layer mechanism of the cathode. Thus, an HIC combines the high energy density of batteries and the high power density of supercapacitors, thus bridging the gap between batteries and supercapacitors. Two-dimensional (2D) carbon materials (graphite, graphene, carbon nanosheets) are promising candidates for hybrid capacitors owing to their unique physical and chemical properties, including their enormous specific surface areas, abundance of active sites (surface and functional groups), and large interlayer spacing. So far, there has been no review focusing on the 2D carbon-based materials for the emerging post-lithium hybrid capacitors. This concept review considers the role of 2D carbon in hybrid capacitors and the recent progress in the application of 2D carbon materials for post-Li (Na+, K+, Zn2+) hybrid capacitors. Moreover, their challenges and trends in their future development are discussed.
Publisher: Wiley
Date: 24-04-2021
Abstract: Structural engineering and creating atomic disorder in electrodes are promising strategies for highly efficient and rapid charge storage in advanced batteries. Herein, a nanohybrid architecture is presented with amorphous vanadium oxide conformally coated on layered V 2 C MXene ( a ‐VO x /V 2 C) via tunable anodic oxidation, which exhibits a high reversible capacity of 307 mAh g –1 at 50 mA g –1 , decent rate capability with capacity up to 96 mAh g –1 at 2000 mA g –1 , and good cycling stability as a cathode for sodium‐ion batteries. The a‐ VO x layer enables reversible and fast Na + insertion/extraction by providing sufficient vacancies and open pathways in the amorphous framework, unlike the irreversible phase transition in its crystalline counterpart, while layered V 2 C MXene offers abundant electron/ion transfer channels, which are joined together to boost the electrochemical performance. Notably the improved reversibility and structural superiority of the a ‐VO x /V 2 C nanohybrid are clearly revealed by in situ Raman, in situ transmission electron microscopy, in situ synchrotron X‐ray absorption spectroscopy, and density functional theory calculations, demonstrating a reversible V–O vibration and valence oscillation between V 4+ and V 5+ in the disordered framework, with robust structural stability and unobstructed Na + diffusion. This work provides a meaningful reference for the elaborate design of MXene‐based nanostructured electrodes toward advanced rechargeable batteries.
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 11-2010
Publisher: Elsevier BV
Date: 08-2022
Publisher: Springer Science and Business Media LLC
Date: 11-04-2010
Publisher: Springer Science and Business Media LLC
Date: 24-08-2017
Publisher: Wiley
Date: 12-07-2023
Abstract: Exploiting dual‐functional photoelectrodes to harvest and store solar energy is a challenging but efficient way for achieving renewable energy utilization. Herein, multi‐heterostructures consisting of N‐doped carbon coated MoS 2 nanosheets supported by tubular TiO 2 with photoelectric conversion and electronic transfer interfaces are designed. When a photo sodium ion battery (photo‐SIB) is assembled based on the heterostructures, its capacity increases to 399.3 mAh g −1 with a high photo‐conversion efficiency of 0.71 % switching from dark to visible light at 2.0 A g −1 . Remarkably, the photo‐SIB can be recharged by light only, with a striking capacity of 231.4 mAh g −1 . Experimental and theoretical results suggest that the proposed multi‐heterostructures can enhance charge transfer kinetics, maintain structural stability, and facilitate the separation of photo‐excited carriers. This work presents a new strategy to design dual‐functional photoelectrodes for efficient use of solar energy.
Publisher: Wiley
Date: 12-05-2020
Publisher: Elsevier BV
Date: 09-2017
Publisher: Bentham Science Publishers Ltd.
Date: 05-04-2016
Publisher: Wiley
Date: 19-02-2020
Publisher: American Chemical Society (ACS)
Date: 18-01-2019
Abstract: The phase-controlled synthesis of metallic and ambient-stable 2D MX
Publisher: American Chemical Society (ACS)
Date: 23-11-2015
Abstract: Three-dimensional (3D) metal oxide superstructures have demonstrated great potentials for structure-dependent energy storage and conversion applications. Here, we reported a facile hydrothermal method for direct growth of highly ordered single crystalline nanowire array assembled 3D orthorhombic Nb3O7(OH) superstructures and their subsequent thermal transformation into monoclinic Nb2O5 with well preserved 3D nanowire superstructures. The performance of resultant 3D Nb3O7(OH) and Nb2O5 superstructures differed remarkably when used for energy conversion and storage applications. The thermally converted Nb2O5 superstructures as anode material of lithium-ion batteries (LiBs) showed higher capacity and excellent cycling stability compared to the Nb3O7(OH) superstructures, while directly hydrothermal grown Nb3O7(OH) nanowire superstructure film on FTO substrate as photoanode of dye-sensitized solar cells (DSSCs) without the need for further calcination exhibited an overall light conversion efficiency of 6.38%, higher than that (5.87%) of DSSCs made from the thermally converted Nb2O5 film. The high energy application performance of the niobium-based nanowire superstructures with different chemical compositions can be attributed to their large surface area, superior electron transport property, and high light utilization efficiency resulting from a 3D superstructure, high crystallinity, and large sizes. The formation process of 3D nanowire superstructures before and after thermal treatment was investigated and discussed based on our theoretical and experimental results.
Publisher: Wiley
Date: 14-04-2021
Abstract: Hydrogen energy is proposed as a promising energy replacement to resolve the current energy problems for sustaining the long‐term development of human society and eventually achieving the hydrogen economy. The evolution of hydrogen from the hydrolysis of boron hydrides is considered as one of the most secure and effective strategies. Seeking appropriate non‐noble metal‐based catalysts is the vital step that is needed to improve the sluggish kinetics of the hydrolysis process. Herein, the evaluation approaches related to the catalytic activities, kinetics, and stability are first summarized. Then, different non‐noble metal‐based catalysts based on single metals and their alloys, metal phosphides, borides, and oxides, and even single‐atom catalysts, are systematically discussed. The relationships among the synthesis methods, material structure, compositions, and catalytic activities are also critically reviewed. Finally, the challenges and perspectives for future non‐noble metal‐based catalysts for hydrolysis of boron hydrides are included to aid in the development of sustainable and clean hydrogen energy. More importantly, the current research is mainly focused on the fundamental research, whereas the report on the practical application for the catalyzed hydrolysis of boron hydrides is less. Developing portable hydrogen generators as hydrogen sources for portable electric power is a potential strategy.
Publisher: Wiley
Date: 10-2005
Abstract: Arrays of Ni(OH) 2 and Fe‐doped Ni(OH) 2 tubes were successfully prepared by electrochemical deposition in porous alumina membranes under ambient conditions. Extensive analysis of the tubes was carried out by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high‐resolution transmission electron microscopy (HRTEM) equipped with energy dispersive spectroscopy (EDS), and X‐ray photoelectron spectroscopy (XPS). The results show that the electrodeposition method yielded uniform Ni(OH) 2 and Fe‐doped Ni(OH) 2 tubes with inner diameters of 150–180 nm, wall thicknesses of 20–30 nm, and lengths of about 60 μm. This template‐based electrochemical deposition method can be extended to the synthesis of other similar materials such as micro‐ or nanotubes, ‐wires, and ‐rods. Furthermore, the Ni(OH) 2 and Fe‐doped Ni(OH) 2 tubes may have promising applications in alkaline rechargeable batteries and electrocatalytic electrolysis for the production of hydrogen. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
Publisher: Springer Science and Business Media LLC
Date: 09-09-2020
Publisher: American Chemical Society (ACS)
Date: 21-09-2021
Publisher: American Chemical Society (ACS)
Date: 27-10-2016
Abstract: A core-shell-shell heterostructure of Si nanoparticles as the core with mesoporous carbon and crystalline TiO
Publisher: Springer Science and Business Media LLC
Date: 20-02-2020
DOI: 10.1038/S41467-020-14444-4
Abstract: Iron-based Prussian blue analogs are promising low-cost and easily prepared cathode materials for sodium-ion batteries. Their materials quality and electrochemical performance are heavily reliant on the precipitation process. Here we report a controllable precipitation method to synthesize high-performance Prussian blue for sodium-ion storage. Characterization of the nucleation and evolution processes of the highly crystalline Prussian blue microcubes reveals a rhombohedral structure that exhibits high initial Coulombic efficiency, excellent rate performance, and cycling properties. The phase transitions in the as-obtained material are investigated by synchrotron in situ powder X-ray diffraction, which shows highly reversible structural transformations between rhombohedral, cubic, and tetragonal structures upon sodium-ion (de)intercalations. Moreover, the Prussian blue material from a large-scale synthesis process shows stable cycling performance in a pouch full cell over 1000 times. We believe that this work could pave the way for the real application of Prussian blue materials in sodium-ion batteries.
Publisher: Wiley
Date: 12-02-2022
Abstract: Metallic lithium batteries are holding great promises for revolutionizing the current energy storage technologies. However, the formation of dendrite‐like morphology of lithium deposition caused by uneven distribution of Li + might cause severe safety concerns of batteries. In this study, a polyoxometalate (POM) cluster, H 5 PMo 10 V 2 O 40 (PMo 10 V 2 ), is added to the conventional electrolyte that can construct a lithium‐rich layer and inhibit the growth of Li dendrites effectively. The Li‐rich layer can fill any lack of lithium ions on the surface of the metal anode, making the electric field strength consistent across the anode surface, thereby inhibiting the formation of lithium dendrites. Consequently, a significantly prolonged cyclic lifespan is obtained for both Li/Li symmetric cells and Li/LiCoO 2 (Li/LCO) full cells. The cells with LCO positive maintains a high reversible specific capacity of 108.5 mAh g −1 after 300 cycles when electrolyte with PMo 10 V 2 additive is used, compared to 31.5 mAh g −1 for the untreated electrolyte. The findings indicate that POMs endowed as “ionic sponge” can be widely deployed in lithium metal batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA14471B
Publisher: Wiley
Date: 04-12-2020
Publisher: Elsevier BV
Date: 11-2008
Publisher: Wiley
Date: 02-07-2014
Abstract: Sodium-ion energy storage, including sodium-ion batteries (NIBs) and electrochemical capacitive storage (NICs), is considered as a promising alternative to lithium-ion energy storage. It is an intriguing prospect, especially for large-scale applications, owing to its low cost and abundance. MoS2 sodiation/desodiation with Na ions is based on the conversion reaction, which is not only able to deliver higher capacity than the intercalation reaction, but can also be applied in capacitive storage owing to its typically sloping charge/discharge curves. Here, NIBs and NICs based on a graphene composite (MoS2 /G) were constructed. The enlarged d-spacing, a contribution of the graphene matrix, and the unique properties of the MoS2 /G substantially optimize Na storage behavior, by accommodating large volume changes and facilitating fast ion diffusion. MoS2 /G exhibits a stable capacity of approximately 350 mAh g(-1) over 200 cycles at 0.25 C in half cells, and delivers a capacitance of 50 F g(-1) over 2000 cycles at 1.5 C in pseudocapacitors with a wide voltage window of 0.1-2.5 V.
Publisher: Wiley
Date: 26-12-2022
Abstract: Metal sulfides have shown great promise for sodium‐ion batteries due to their excellent redox reversibility and relatively high capacity. However, metal sulfides generally suffer from sluggish charge transport and serious volume change during the charge–discharge process. Herein, potato chip‐like nitrogen‐doped carbon‐coated ZnS/Sb 2 S 3 heterojunction (ZnS/Sb 2 S 3 @NC) is precisely synthesized through a sulfurization reaction, and a subsequent metal cation exchange process between Zn 2+ and Sb 3+ . The theoretical calculations and experimental studies reveal the boosted charge transfer in ZnS/Sb 2 S 3 @NC composites. Therefore, the ZnS/Sb 2 S 3 @NC electrode exhibits excellent cycling stability (a high reversible capacity of 511.4 mAh g ‐1 after 450 cycles) and superior rate performance (400.4 mAh g ‐1 at 10 A g ‐1 ). In addition, ZnS/Sb 2 S 3 @NC is based on a conversion‐alloy reaction mechanism to store Na + , which is disclosed by the X‐ray diffraction and high resolution transmission electron microscopy analysis. This effective synthesis method can provide a reference for the design of other high‐performance electrode materials for sodium‐ion batteries.
Publisher: Wiley
Date: 09-2022
Abstract: Rational design of efficient, sustainable and low‐cost hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) bifunctional catalysts within the scope of feasibility is of great significance for realizing rapid output water splitting. Here, we used a simple coprecipitation method to prepare Keggin‐type polyoxometalate (POM) nanoscale particles coated with core‐shell‐type metal‐organic framework (MOF) derived Co‐NC (Co‐NC‐POM). Thanks to synergy effect, abundant active sites, unique structure and defects, the as‐synthesized Co‐NC‐POM hybrids exhibit excellent eletrocatalytic performance both for HER and OER. Moreover, it can act as bifunctional electrocatalysts for overall water splitting, exhibiting a low voltage of 1.60 V and an excellently stability up to 24 h at a current density of 10 mA cm −2 . It shows competitive performance against the same type of advanced bifunctional catalysts currently reported and thus is expected to among the most efficient non‐precious metal catalysts to drive the water splitting device.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA06708H
Publisher: Wiley
Date: 16-06-2017
Abstract: Electrolytes, which are a key component in electrochemical devices, transport ions between the sulfur/carbon composite cathode and the lithium anode in lithium-sulfur batteries (LSBs). The performance of a LSB mostly depends on the electrolyte due to the dissolution of polysulfides into the electrolyte, along with the formation of a solid-electrolyte interphase. The selection of the electrolyte and its functionality during charging and discharging is intricate and involves multiple reactions and processes. The selection of the proper electrolyte, including solvents and salts, for LSBs strongly depends on its physical and chemical properties, which is heavily controlled by its molecular structure. In this review, the fundamental properties of organic electrolytes for LSBs are presented, and an attempt is made to determine the relationship between the molecular structure and the properties of common organic electrolytes, along with their effects on the LSB performance.
Publisher: Wiley
Date: 09-10-2018
Publisher: Wiley
Date: 29-05-2020
Publisher: Wiley
Date: 12-04-2019
Abstract: Prussian blue analogues (PBAs, A
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA00203A
Abstract: Carbon-based materials stand out from all possible non-precious metal-based oxygen reduction reaction (ORR) catalysts, owing to their low cost, high conductivity, and variety of allotropes with different bonding and structures.
Publisher: Wiley
Date: 21-08-2023
Abstract: High‐voltage lithium‐ion batteries (LIBs) have attracted great attention due to their promising high energy density. However, severe capacity degradation is witnessed, which originated from the incompatible and unstable electrolyte‐electrode interphase at high voltage. Herein, a robust additive‐induced sulfur‐rich interphase is constructed by introducing an additive with ultrahigh S‐content (34.04 %, methylene methyl disulfonate, MMDS) in 4.6 V LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523)||graphite pouch cell. The MMDS does not directly participate the inner Li + sheath, but the strong interactions between MMDS and PF 6 − anions promote the preferential decomposition of MMDS and broaden the oxidation stability, facilitating the formation of an ultrathin but robust sulfur‐rich interfacial layer. The electrolyte consumption, gas production, phase transformation and dissolution of transition metal ions were effectively inhibited. As expected, the 4.6 V NCM523||graphite pouch cell delivers a high capacity retention of 87.99 % even after 800 cycles. This work shares new insight into the sulfur‐rich additive‐induced electrolyte‐electrode interphase for stable high‐voltage LIBs.
Publisher: Elsevier BV
Date: 02-2015
Publisher: Wiley
Date: 15-08-2003
Publisher: Wiley
Date: 08-06-2020
Publisher: American Chemical Society (ACS)
Date: 08-2023
Publisher: Wiley
Date: 08-05-2023
DOI: 10.1002/INF2.12422
Abstract: Sodium‐ion batteries (SIBs) are considered as a low‐cost complementary or alternative system to prestigious lithium‐ion batteries (LIBs) because of their similar working principle to LIBs, cost‐effectiveness, and sustainable availability of sodium resources, especially in large‐scale energy storage systems (EESs). Among various cathode candidates for SIBs, Na‐based layered transition metal oxides have received extensive attention for their relatively large specific capacity, high operating potential, facile synthesis, and environmental benignity. However, there are a series of fatal issues in terms of poor air stability, unstable cathode/electrolyte interphase, and irreversible phase transition that lead to unsatisfactory battery performance from the perspective of preparation to application, outside to inside of layered oxide cathodes, which severely limit their practical application. This work is meant to review these critical problems associated with layered oxide cathodes to understand their fundamental roots and degradation mechanisms, and to provide a comprehensive summary of mainstream modification strategies including chemical substitution, surface modification, structure modulation, and so forth, concentrating on how to improve air stability, reduce interfacial side reaction, and suppress phase transition for realizing high structural reversibility, fast Na + kinetics, and superior comprehensive electrochemical performance. The advantages and disadvantages of different strategies are discussed, and insights into future challenges and opportunities for layered oxide cathodes are also presented. image
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CP02475C
Abstract: Binder effects on the cycling stability and rate capability for Li and Na-ion batteries were reviewed here.
Publisher: Elsevier BV
Date: 12-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TC03757A
Abstract: This review provides an in-depth discussion on key progress of Li 3 VO 4 as a promising anode material for LIBs with high electronic conductivity, fast ion transportation and controlled morphology, and highlights its large-scale application in future.
Publisher: Wiley
Date: 16-10-2019
Abstract: Rechargeable magnesium batteries (RMBs) are promising candidates for next-generation energy storage systems owing to their high safety and the low cost of magnesium resources. One of the main challenges for RMBs is to develop suitable high-performance cathode materials. Layered materials are one of the most promising cathode materials for RMBs due to their relatively high specific capacity and facile synthesis process. This review focuses on recent progress on layered cathode materials for RMBs, including layered oxides, sulfides, selenides, and other layered materials. In addition, effective strategies to improve the electrochemical performance of layered cathode materials are summarized. Moreover, future perspectives about the application of layered materials in RMBs are also discussed. This review provides some significant guidance for the further development of layered materials for RMBs.
Publisher: Elsevier BV
Date: 29-01-2010
Publisher: Wiley
Date: 18-09-2021
Abstract: Over the past few years, great attention has been given to nonaqueous lithium-air batteries owing to their ultrahigh theoretical energy density when compared with other energy storage systems. Most of the research interest, however, is dedicated to batteries operating in pure or dry oxygen atmospheres, while Li-air batteries that operate in ambient air still face big challenges. The biggest challenges are H
Publisher: Wiley
Date: 10-08-2021
Abstract: Intercalation‐based anode materials can be considered as the most promising anode candidates for large‐scale sodium‐ion batteries (SIBs), owing to their long‐term cycling stability and environmental friendliness, as well as their natural abundance. Nevertheless, their low energy density, low initial coulombic efficiency, and poor cycling lifespan, as well as sluggish sodium diffusion dynamics are still the main issues for the application of intercalation‐based anode materials in SIBs in terms of meeting the benchmark requirements for commercialization. Over the past few years, tremendous efforts have been devoted to improving the performance of SIBs. In this Review, recent progress in the development of intercalation‐based anode materials, including TiO 2 , Li 4 Ti 5 O 12 , Na 2 Ti 3 O 7 , and NaTi 2 (PO 4 ) 3 , is summarized in terms of their sodium storage performance, critical issues, sodiation/desodiation behavior, and effective strategies to enhance their electrochemical performance. Additionally, challenges and perspectives are provided to further understand these intercalation‐based anode materials.
Publisher: Wiley
Date: 17-11-2021
Abstract: The safety of energy storage equipment has always been a stumbling block to the development of battery, and sodium ion battery is no exception. However, as an ultimate solution, the use of non‐flammable electrolyte is susceptible to the side effects, and its poor compatibility with electrode, causing failure of batteries. Here, we report a non‐flammable electrolyte design to achieve high‐performance sodium ion battery, which resolves the dilemma via regulating the solvation structure of electrolyte by hydrogen bonds and optimizing the electrode–electrolyte interphase. The reported non‐flammable electrolyte allows stable charge‐discharge cycling of both sodium vanadium phosphate@hard carbon and Prussian blue@hard carbon full pouch cell for more than 120 cycles with a capacity retention of % and high cycling Coulombic efficiency (99.7 %).
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC01857A
Abstract: A gel–solid state polymer electrolyte has been used as the separator and an electrolyte for lithium oxygen batteries, which can not only avoid electrolyte evaporation but also protect the lithium metal anode during reactions over long-term cycling.
Publisher: Royal Society of Chemistry (RSC)
Date: 18-06-2014
DOI: 10.1039/C4TA01579G
Publisher: Elsevier BV
Date: 12-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9QM00674E
Abstract: This work will open a new view for the design of hollow micro-/nanostructures used as cathodes for sodium-ion batteries, enclosing the superiority of this unique structure to enhance the electrochemical performance.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA08073E
Abstract: A scalable and continuous synthesis technique for hierarchically structured layered cathode materials with exposed {010} planes is proposed.
Publisher: Elsevier BV
Date: 2014
Publisher: Wiley
Date: 12-10-2021
Abstract: The practical application of lithium–sulfur batteries is h ered by the sluggish redox reaction kinetics and severe lithium polysulfide (LiPS) migration, especially under high sulfur loading and lean electrolyte scenarios. Strategies to catalyze the sulfur liquid/solid conversion within a “hermetic” nano‐container have been proposed, where the LiPS migration and sluggish reaction kinetics can be simultaneously addressed. Herein, to realize rapid LiPS conversion and slow LiPS migration, the sulfur species are packed by a hermetic catalytic interface, constructed by the phosphorene/graphene heterostructure. The 2D phosphorene/graphene stacking has two unique benefits: 1) a direct electron transfer avoiding any insulating media, resulting in an exceptional catalytic effect on LiPS conversion ii) favorable charge rearrangement that enhances chemisorption toward LiPS and limits LiPS crossover. The proposed highly flexible hermetic interface with strong van der Waals serves as a bifunctional nano‐container to pack sulfur species and promote sulfur redox reactions, which gives rise to excellent battery performances: a high areal capacity of 5.57 mAh cm −2 under a low electrolyte/sulfur ratio of 5.7 mL g −1 . This work affords a coupling strategy that embraces interfacial and structural engineering to promote kinetic reactions of sulfur conversions under electrolyte‐lean conditions.
Publisher: Wiley
Date: 10-10-2021
Abstract: Recently, environmental degradation along with the energy crisis has led to an urgent necessity to develop renewable and clean energy storage devices. The sodium ion batteries (SIBs) have become promising candidates in the whole energy storage system, due to its rich and low‐cost sodium resources. To accelerate the commercialization of SIBs, the energy density of SIBs needs to be further improved. Increasing the operating voltage of SIBs is considered to be an effective method, which requires stable and high‐voltage cathode materials. Comparatively, polyanionic sulfate materials (PSMs) with stable skeletons, adjustable structures, operational safety, and the high electronegativity of SO 4 2− are believed to be the most promising high‐energy‐cathodes. In this review, recent progresses on several typical sulfates for SIBs are summarized. What's more, based on their intrinsic characteristics, the structures and kinetic behaviors of PSMs are also discussed. Reported measures to optimize their electrochemical performances and structural stability are summarized and reviewed. The key challenges and corresponding opportunities for PSMs are also discussed. The insights presented in this review may be a guide for designing and developing stable and practical PSMs for room‐temperature SIBs, which is conducive to promoting their industrialization.
Start Date: 12-2012
End Date: 12-2016
Amount: $270,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2014
End Date: 12-2017
Amount: $350,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 02-2011
End Date: 02-2014
Amount: $270,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 12-2016
End Date: 12-2019
Amount: $210,152.00
Funder: Australian Research Council
View Funded ActivityStart Date: 10-2022
End Date: 10-2025
Amount: $390,000.00
Funder: Australian Research Council
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