ORCID Profile
0000-0002-7364-0434
Current Organisations
University of Wollongong
,
Anhui University
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Composite and Hybrid Materials | Functional Materials | Energy Generation, Conversion and Storage Engineering | Materials Engineering
Expanding Knowledge in Engineering | Energy Storage (excl. Hydrogen) |
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 03-2021
Publisher: American Chemical Society (ACS)
Date: 06-07-2018
Abstract: Metal selenides have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including metal-ion batteries and water splitting. However, their practical application is greatly hindered by collapse of the microstructure, thus leading to performance fading. Tuning the structure at nanoscale of these materials is an effective strategy to address the issue. Herein, we craft MoSe
Publisher: Wiley
Date: 26-06-2021
Abstract: Challenges from the insulating S and Li 2 S 2 /Li 2 S (Li 2 S 1–2 ) discharge products are restricting the development of the high‐energy‐density Li–S battery system. The deposition of insulating Li 2 S 1–2 on the surfaces of S based cathodes (e.g., S and Li 2 S) limits the reaction kinetics, leading to inferior electrochemical performance. In this work, the impact of binders on the deposition of Li 2 S 1–2 on S based cathodes is revealed, along with the interaction between polyvinylidene difluoride and Li 2 S olysulfides. This interaction can obstruct the electrochemical reactions near the binder, leading to dense deposition of insulating Li 2 S 1–2 that covers the cathode surface. Without such a binder, localized and uniform Li 2 S 1–2 deposition throughout the whole cathode can be achieved, effectively avoiding surface blockage and significantly improving electrode utilization. A full battery constructed with a binder‐free Li 2 S cathode delivers a gravimetric and volumetric energy density of 331.0 Wh kg −1 and 281.5 Wh L −1 , under ultrahigh Li 2 S loading (16.2 mg Li2S cm −2 ) with lean electrolyte (2.0 µL mg Li2S −1 ), providing a facile but practical approach to the design of next‐generation S‐based batteries.
Publisher: Elsevier BV
Date: 04-2016
Publisher: Springer Science and Business Media LLC
Date: 24-07-2018
DOI: 10.1557/JMR.2017.282
Publisher: Wiley
Date: 14-06-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2NR00227B
Abstract: A composite made up of BiOCl nanoparticles encapsulated in N-doped carbon nanotubes (BiOCl@N-CNTs) demonstrates ideal K ion storage properties owing to its outstanding composition and structural design.
Publisher: Wiley
Date: 09-10-2017
Publisher: American Chemical Society (ACS)
Date: 10-01-2020
Abstract: The practical application of Li-S batteries is h ered because of their poor cycling stability caused by electrolyte-dissolved lithium polysulfides. Dual functionalities such as strong chemical adsorption stability and high conductivity are highly desired for an ideal host material for the sulfur-based cathode. Herein, a uniform polypyrrole layer-coated sulfur/graphene aerogel composite is designed and synthesized using a novel vapor-phase deposition method. The polypyrrole layer simultaneously acts as a host and an adsorbent for efficient suppression of polysulfide dissolution through strong chemical interaction. The density functional theory calculations reveal that the polypyrrole could trap lithium polysulfides through stronger bonding energy. In addition, the deflation of sulfur/graphene hydrogel during the vapor-phase deposition process enhances the contact of sulfur with matrices, resulting in high sulfur utilization and good rate capability. As a result, the synthesized polypyrrole-coated sulfur/graphene aerogel composite delivers specific discharge capacities of 1167 and 409.1 mA h g
Publisher: American Chemical Society (ACS)
Date: 21-05-2021
Publisher: American Chemical Society (ACS)
Date: 30-08-2017
Abstract: Two-dimensional ultrathin cobaltosic oxide nanosheets with numerous geometrical holes were synthesized by the hydrothermal method, and further used as an effective encapsulation matrix for sulfur and polysulfides in lithium-sulfur batteries. The cobaltosic oxide/sulfur nanosheet composite electrode exhibits high Coulombic efficiency (99%), a suppressed shuttle effect, and a reversible capacity of 656 mA h g
Publisher: Wiley
Date: 12-10-2017
Abstract: The concept of an all-integrated design with multifunctionalization is widely employed in optoelectronic devices, sensors, resonator systems, and microfluidic devices, resulting in benefits for many ongoing research projects. Here, maintaining structural/electrode stability against large volume change by means of an all-integrated design is realized for silicon anodes. An all-integrated silicon anode is achieved via multicomponent interlinking among carbon@void@silica@silicon (CVSS) nanospheres and cross-linked carboxymethyl cellulose and citric acid polymer binder (c-CMC-CA). Due to the additional protection from the silica layer, CVSS is superior to the carbon@void@silicon (CVS) electrode in terms of long-term cyclability. The as-prepared all-integrated CVSS electrode exhibits high mechanical strength, which can be ascribed to the high adhesivity and ductility of c-CMC-CA binder and the strong binding energy between CVSS and c-CMC-CA, as calculated based on density functional theory (DFT). This electrode exhibits a high reversible capacity of 1640 mA h g
Publisher: American Chemical Society (ACS)
Date: 22-07-2019
Abstract: Solid materials with special atomic and electronic structures are deemed desirable platforms for establishing clear relationships between surface/interface structure characteristics and electrochemical activity. In this work, nickel boride (Ni
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9CE01494B
Abstract: Hollow-structured nanomaterials with complex interiors have drawn a great deal of attention due to their unique properties in various fields.
Publisher: American Chemical Society (ACS)
Date: 08-03-2017
Abstract: Zinc germinate (Zn
Publisher: Wiley
Date: 10-10-2018
Abstract: Borohydride solid-state electrolytes with room-temperature ionic conductivity up to ≈70 mS cm
Publisher: Wiley
Date: 24-04-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1EE00531F
Abstract: A succinct but critical survey of the recent progress in LMBs is presented, comprising their intriguing electrode chemistries, underlying electrochemical behaviors with various electrolytes, and sophisticated electrode–electrolyte interfaces in the context of the most recent research and development.
Publisher: Springer Science and Business Media LLC
Date: 11-09-2019
Publisher: Elsevier BV
Date: 02-2022
Publisher: American Chemical Society (ACS)
Date: 11-09-2019
Abstract: As an important class of multielectron reaction materials, the applications of transition-metal oxides (TMOs) are impeded by volume expansion and poor electrochemical activity. To address these intrinsic limitations, the renewal of TMOs inspires research on incorporating an advanced interface layer with multiple anionic characteristics, which may add functionality to support properties inaccessible to a single-anion TMO electrode. Herein, a transition-metal oxycarbide (TMOC, M = Mo) with more than one anionic species was prepared as an interface layer on a corresponding oxide. A multiple anionic TMOC possesses advantages of structural stability, abundant active sites, and elevated metal cation valence states. Such merits mitigate volume changes and enhance multielectron reactions significantly. The TMOC nanocomposite has a well-maintained capacity after 1000 cycles at 2 A·g
Publisher: Elsevier BV
Date: 03-2015
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 12-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9RA05165A
Abstract: Herein, the Ni–Co–O–C–P hollow tetragonal microtubes grown on 3D Ni foam (Ni–Co–O–C–P/NF) was delicately designed and synthesized, which presented a high activity and durability for electrocatalytic overall-water-splitting in alkaline media.
Publisher: Wiley
Date: 25-04-2023
Abstract: Aqueous zinc ion batteries (AZIBs) with high safety, low cost, and eco‐friendliness advantages show great potential in large‐scale energy storage systems. However, their practical application is hindered by low Columbic efficiency and unstable zinc anode resulting from the side reactions and deterioration of zinc dendrites. Herein, tripropylene glycol (TG) is chosen as a dual‐functional organic electrolyte additive to improve the reversibility of AZIBs significantly. Importantly, ab initio molecular dynamics theoretical simulations and experiments such as in situ electrochemical impedance spectroscopy, and synchrotron radiation‐based in situ Fourier transform infrared spectroscopy confirm that TG participates in the solvation sheath of Zn 2+ , regulating overpotential and inhibiting side reactions meanwhile, TG inhibits the deterioration of dendrites and modifies the direction of zinc deposition by constructing an adsorbed layer on the zinc anode. Consequently, a Zn‐MnO 2 full cell with TG electrolyte exhibited a specific capacity of 124.48 mAh g ‐1 after 1000 cycles at a current density of 4 A g ‐1 . This quantitative regulation for suitable solvation sheath and adsorbed layer on zinc anode, and its easy scalability of the process can be of immediate benefit for the dendrite‐free, high‐performance, and low‐cost energy storage systems.
Publisher: Elsevier BV
Date: 06-2019
DOI: 10.1016/J.ECOENV.2019.03.013
Abstract: Cadmium (Cd)-based QDs are well studied owing to their excellent optical properties. The applications of Cd-based QDs in biomedical filed, however, is hindered by its inherent toxicity. In this study, to overcome the inherent toxicity of heavy metals, CdTe QDs were encapsulated with different shells (NAC, MPA and GSH) to reduce the leakage of Cd from the core. We studied the cytotoxicity of the three kinds of CdTe QDs on S. cerevisiae by spectroscopic, electrochemical, microscopic methods and microcalorimetric technique. Results showed that toxicity of CdTe QDs increased with the augment of QD concentration. According to the values of IC
Publisher: Wiley
Date: 07-10-2021
Publisher: Elsevier BV
Date: 11-2021
Publisher: Wiley
Date: 08-07-2018
Publisher: Wiley
Date: 08-06-2017
Publisher: Wiley
Date: 26-05-2015
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 10-2018
Publisher: Elsevier BV
Date: 03-2014
Publisher: Elsevier BV
Date: 10-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA08834A
Abstract: Cacti grown in arid areas have developed intrinsic water management systems, inspired by the cactus, uncommon cactus-like MoS 2 /Bi 19 Cl 3 S 27 heterostructures have been successfully constructed in this work.
Publisher: Wiley
Date: 02-03-2020
DOI: 10.1002/INF2.12101
Publisher: Elsevier BV
Date: 02-2016
Publisher: American Chemical Society (ACS)
Date: 24-10-2023
Publisher: Wiley
Date: 17-09-2019
Abstract: The feasibility of transition metal carbides (TMCs) as promising high-rate electrodes is still hindered by low specific capacity and sluggish charge transfer kinetics. Improving charge transport kinetics motivates research toward directions that would rely on heterostructures. In particular, heterocomposing with carbon-rich TMCs is highly promising for enhancing Li storage. However, due to limited synthesis methods to prepare carbon-rich TMCs, understanding the interfacial interaction effect on the high-rate performance of TMCs is often neglected. In this work, a novel strategy is proposed to construct a binary carbide heteroelectrode, i.e. incorporating the carbon-rich TMC (M=Mo) with its metal-rich TMC nanowires (nws) via an ingenious in situ disproportionation reaction. Results show that the as-prepared MoC-Mo
Publisher: Elsevier BV
Date: 09-2017
Publisher: American Chemical Society (ACS)
Date: 04-02-2022
Abstract: High volumetric capacity and durability anode materials for sodium ion batteries have been urgently required for practical applications. Herein, we reported a Sn-pillared pyknotic graphene conductive network with high-level N-doping. This densely stacked block offers high volumetric Na-ion storage capacity, rapid electrochemical reaction kinetics, and robust structural stability during cycling owing to the high capacity component (metallic Sn ≈847 mAh g
Publisher: IOP Publishing
Date: 06-05-2014
Publisher: Springer Science and Business Media LLC
Date: 26-11-2022
Publisher: Elsevier BV
Date: 04-2022
Publisher: American Chemical Society (ACS)
Date: 10-04-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CC08146G
Abstract: Porous BiOCl hexagonal prisms have been successfully prepared through a simple solvothermal route.
Publisher: Elsevier BV
Date: 08-2013
Publisher: Wiley
Date: 28-03-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1JM13259H
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA08802G
Abstract: A carbon fiber@Ni 3 S 2 non-woven structured electrode was prepared by electroplating a nickel layer on the surface of carbon paper fibers, and then carbon fiber@Ni 3 S 2 was in situ formed by a vulcanization reaction.
Publisher: Elsevier BV
Date: 02-2021
Publisher: American Chemical Society (ACS)
Date: 20-11-2019
Publisher: Wiley
Date: 19-03-2022
Abstract: The decay of lithium–sulfur (Li–S) batteries is mainly due to the shuttle effect caused by intermediate polysulfides (LiPSs). Herein, a multiple confined cathode architecture is prepared by filling graphitized Pinus sylvestris with carbon nanotubes and defective LaNiO 3− x (LNO‐V) nanoparticles. The composite electrode with high areal sulfur loading of 11.6 mg cm −2 shows a high areal specific capacity of 8.5 mAh cm −2 at 1 mA cm −2 (0.05 C). Both experimental results and theoretical calculations reveal that this unique structure not only provides physical restriction on LiPSs within microchannels but also offers strong chemical immobilization and catalytic conversion of LiPSs attributed to the spin density around oxygen vacancies of LaNiO 3− x . These oxygen vacancies elongate the SS and LiS bonds and make them easy to break. Furthermore, the lengthwise channels derived from cytoderm restrict the transverse diffusion of polysulfides, leading to a uniform areal current and thus homogeneous lithium infiltration. This suppresses the corrosion of the lithium anode due to polysulfides confinement. The discovery of the multiple confined structure that provides chemical adsorption, fast diffusion, and catalytic conversion for polysulfides can broaden the application of biomass materials and offer a new strategy to achieve robust Li–S batteries.
Publisher: Springer Science and Business Media LLC
Date: 12-07-2017
Publisher: Wiley
Date: 30-05-2021
Abstract: The design and manufacture of advanced materials based on biomaterials provide new opportunities to solve many technological challenges. In this work, a highly graphitized wood framework (GWF) with a porous tunnel structure and microvilli is constructed as a multifunctional interlayer to improve the electrochemical performance of lithium–sulfur (Li–S) batteries. The GWF not only retains the 3D transport network of wood, but also offers increased deposition sites for polysulfides through the microvilli which grow on the inner surfaces of the carbon tunnels. Electrochemical tests show that GWF effectively enhances the initial discharge capacity of the Li–S battery to 1593 mAh g −1 at 0.05 C, with a low capacity decline of 0.06% per cycle at 1 C. Besides, the GWF interlayer also effectively protects lithium anodes from corrosion by S x 2− , thus they still keep their metallic luster and clean surface even after long charge‐discharge cycles. These enhancements are attributed to the high conductivity, abundant microvilli, and tunnel confinement effects of GWF, which effectively inhibit the shuttle effect of polysulfides by the same principle as nose hairs filtering the air. This work presents a new understanding of bionic/biomaterials and a new strategy to improve the performance of Li–S batteries.
Publisher: American Chemical Society (ACS)
Date: 24-08-2017
Publisher: Elsevier BV
Date: 02-2022
Publisher: American Chemical Society (ACS)
Date: 24-06-2019
Abstract: Due to the abundant potassium resource on the Earth's crust, researchers now have become interested in exploring high-performance potassium-ion batteries (KIBs). However, the large size of K
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TA10500B
Abstract: Two-dimensional (2D) nanostructures including 2D materials and composites containing 2D supports and active materials as sodium-ion battery anodes are reviewed.
Publisher: American Scientific Publishers
Date: 06-2014
Abstract: In this study, hexadecyltrimethyl ammonium bromide and triblock poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) were used as co-templates and tetraethoxysilane was used as silica source to synthesize mesoporous MCM-48, which was employed to adsorb methyl violet dye from water. The prepared MCM-48, after calcination at 550 degrees C, was found to have a high surface area of 1072 m2/g and a pore volume of 1.08 cm3/g. The MCM-48 adsorption of methyl violet in aqueous solution was studied using UV-visible spectrophotometry. Experimental conditions, including initial pH of s le solution, initial concentration, MCM-48 amount, adsorption time and temperature, were also investigated. Results showed that the adsorption behavior could well be depicted by Langmuir equations and pseudo-second-order kinetic model. The maximum adsorption capacity of 193.82 mg/g was obtained at 20 degrees C. The values for thermodynamic parameters deltaG0, deltaS0 and deltaH0 were all negative, showing that the MCM-48 adsorption of methyl violet was spontaneous and exothermic.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3CC03479H
Publisher: Elsevier BV
Date: 10-2021
Publisher: American Chemical Society (ACS)
Date: 09-05-2018
Abstract: A series of ternary sulfide hollow structures have been successfully prepared by a facile glutathione (GSH)-assisted one-step hydrothermal route, where GSH acts as the source of sulfur and bubble template. We demonstrate the feasibility and versatility of this in situ gas-bubble template strategy by the fabrication of novel hollow structures of MIn
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1TA06384G
Abstract: Conjugated porous polyimide poly(2,6-diaminoanthraquinone) benzamide was prepared by a simple polycondensation reaction. The polymer delivers outstanding rate performance and long-term cycling stability as a cathode for sodium ion batteries.
Publisher: Wiley
Date: 03-05-2016
Publisher: Elsevier BV
Date: 11-2011
Publisher: American Chemical Society (ACS)
Date: 24-06-2021
Abstract: Li-rich layered oxides have attracted intense attention for lithium-ion batteries, as provide substantial capacity from transition metal cation redox simultaneous with reversible oxygen-anion redox. However, unregulated irreversible oxygen-anion redox leads to critical issues such as voltage fade and oxygen release. Here, we report a feasible NiFe
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA04363G
Abstract: An Li 2 B 4 O 7 cladded carbon nanofiber membrane has been designed as an interlayer for Li–S batteries. Due to abundant electronic deficiencies [BO 3 ] in Li 2 B 4 O 7 , the enhanced electrochemical performance of Li–S batteries was achieved.
Publisher: American Chemical Society (ACS)
Date: 27-10-2010
DOI: 10.1021/ES1019959
Abstract: Highly crystalline metastable bismuth titanate (Bi₂₀TiO₃₂) nanosheets are prepared via a simple green wet chemical route for the first time. The Bi₂₀TiO₃₂)photocatalysts were characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), energy dispersive spectrum analysis (EDS), X-ray diffraction (XRD), N₂ adsorption-desorption (BET), and UV-vis diffuse reflectance spectroscopy (DRS). Inspiringly, Bi₂₀TiO₃₂ nanosheets showed high photocatalytic activity for the degradation of nonbiodegradable azo dye under simulated sunlight and visible-light irradiation. The experimental results showed that the photocatalytic activity of the Bi₂₀TiO₃₂ nanosheets was superior to the commercial Degussa P25 TiO₂, and demonstrated that the morphology and crystal structure have a distinct effect on the photocatalytic activity. The reasons for the high photocatalytic activity and the formation mechanism of Bi₂₀TiO₃₂ nanosheets are also discussed.
Publisher: Wiley
Date: 04-02-2016
Abstract: Constructing heterostructures can endow materials with fascinating performance in high-speed electronics, optoelectronics, and other applications owing to the built-in charge-transfer driving force, which is of benefit to the specific charge-transfer kinetics. Rational design and controllable synthesis of nano-heterostructure anode materials with high-rate performance, however, still remains a great challenge. Herein, ultrafine SnS/SnO2 heterostructures were successfully fabricated and showed enhanced charge-transfer capability. The mobility enhancement is attributed to the interface effect of heterostructures, which induces an electric field within the nanocrystals, giving them much lower ion-diffusion resistance and facilitating interfacial electron transport.
Publisher: Elsevier BV
Date: 12-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0QM01142H
Abstract: A novel flexible V 2 O 3 /VN heterostructure was constructed by a facile topochemical nitridation strategy and synergistically promoted the conversion of polysulfides in Li–S batteries.
Publisher: Elsevier BV
Date: 06-2014
Publisher: American Chemical Society (ACS)
Date: 03-01-2023
Publisher: MDPI AG
Date: 09-09-2022
Abstract: Owing to the sustainability, environmental friendliness, and structural ersity of biomass-derived materials, extensive efforts have been devoted to using them in high-energy rechargeable batteries. Alkali-metal–selenium batteries, one of the high-energy rechargeable batteries with a reasonable cost compared to up-to-date lithium-ion batteries, have also attracted significant attention. Therefore, a timely and comprehensive review of the biomass carbon structures/components to the mechanisms for enhancing alkali-metal–selenium batteries has been systematically introduced. In the end, advantages, challenges, and outlooks are pointed out for the future development of biomass-derived carbon materials in alkali-metal–selenium batteries. This review could help researchers think about using biomass carbon materials to improve battery performance and what other problems should be solved, thereby promoting the application of biomass materials in battery design.
Publisher: Springer Science and Business Media LLC
Date: 04-03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA02259J
Abstract: A crystalline–amorphous core–shell ZnO/Zn 2 GeO 4 /graphene aerogel with a three-dimensional structure has been successfully fabricated and shows enhanced stability and electrochemical performances.
Publisher: BMJ
Date: 02-2020
DOI: 10.1136/BMJOPEN-2019-031804
Abstract: To assess the health burden of breast hypertrophy and the comparative effectiveness of breast reduction surgery in improving health-related quality of life. Prospective cohort study. A major public tertiary care hospital in Australia. Women with symptomatic breast hypertrophy who underwent breast reduction surgery were followed for 12 months. A comparison control cohort comprised women with breast hypertrophy who did not undergo surgery. Bilateral breast reduction surgery for women in the surgical cohort. The primary outcome measure was health-related quality of life measured preoperatively and at 3, 6 and 12 months postoperatively using the Short Form-36 (SF-36) questionnaire. Secondary outcome measures included post-surgical complications. 209 patients in the surgical cohort completed questionnaires before and after surgery. 124 patients in the control hypertrophy cohort completed baseline and 12-month follow-up questionnaires. At baseline, both groups had significantly lower scores compared with population norms across all scales (p .001). In the surgical cohort significant improvements were seen across all eight SF-36 scales (p .001) following surgery. Within 3 months of surgery scores were equivalent to those of the normal population and this improvement was sustained at 12 months. SF-36 physical and mental component scores both significantly improved following surgery, with a mean change of 10.2 and 9.2 points, respectively (p .001). In contrast, SF-36 scores for breast hypertrophy controls remained at baseline across 12 months. The improvement in quality of life was independent of breast resection weight and body mass index. Breast reduction significantly improved quality of life in women with breast hypertrophy. This increase was most pronounced within 3 months of surgery and sustained at 12-month follow-up. This improvement in quality of life is comparable to other widely accepted surgical procedures. Furthermore, women benefit from surgery regardless of factors including body mass index and resection weight.
Publisher: Springer Science and Business Media LLC
Date: 10-10-2018
Publisher: Wiley
Date: 2016
Publisher: Wiley
Date: 03-07-2018
Abstract: Ternary transition metal oxides (TTMOs) have attracted considerable attention for rechargeable batteries because of their fascinating properties. However, the unsatisfactory electrochemical performance originating from the poor intrinsic electronic conductivity and inferior structural stability impedes their practical applications. Here, the novel hierarchical porous NiO/β-NiMoO
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA04507G
Abstract: We present a surfactant-mediated approach to the production of single-crystal Bi 3 O 4 Br nanorings via a simple solvothermal method.
Publisher: MDPI AG
Date: 31-12-2022
Abstract: Although lithium metal anode has irreplaceable advantages, such as ultra-high specific energy density and ultra-low redox potential, a variety of issues, i.e., short cycle life, low Coulomb efficiency, and tendency to cause fire explosions caused by lithium dendrite growth and high reactivity to the electrolyte, seriously hinder the practical progress of lithium metal anode. This perspective summarizes how 3D lithiophilic materials have stabilized lithium metal anodes in recent years by improving the uneven deposition of lithium metal, alleviating the volume expansion of lithium metal anodes, and limiting dendrite growth. Simultaneously, the issues of the 3D composite lithium anodes in practical application are concluded and the research direction of 3D composite lithium anode is prospected.
Publisher: American Chemical Society (ACS)
Date: 26-10-2015
Abstract: Sulfur is an attractive cathode material in energy storage devices due to its high theoretical capacity of 1672 mAh g(-1). However, practical application of lithium-sulfur (Li-S) batteries can be achieved only when the major barriers, including the shuttling effect of polysulfides (Li2Sx, x = 3-8), significant volume change (∼80%), and the resultant rapid deterioration of electrodes, are tackled. Here, we propose an "inside-out" synthesis strategy by mimicking the structure of the pomegranate fruit to achieve conductive confinement of sulfur to address these issues. In the proposed pomegranate-like structure, sulfur and carbon nanotubes composite is encapsulated by the in situ formed amorphous carbon network, which allows the regeneration of electroactive material sulfur and the confinement of the sulfur as well as the lithium polysulfide within the electrical conductive carbon network. Consequently, a highly robust sulfur cathode is obtained, delivering remarkable performance in a Li-S battery. The obtained composite cathode shows a reversible capacity of 691 mAh g(-1) after 200 cycles with impressive cycle stability at the current density of 1600 mA g(-1).
Publisher: American Chemical Society (ACS)
Date: 08-05-2020
Publisher: Wiley
Date: 28-11-2020
Abstract: Topological insulators have spurred worldwide interest, but their advantageous properties have scarcely been explored in terms of electrochemical energy storage, and their high‐rate capability and long‐term cycling stability still remain a significant challenge to harvest. p‐Type topological insulator SnSb 2 Te 4 nanodots anchoring on few‐layered graphene (SnSb 2 Te 4 /G) are synthesized as a stable anode for high‐rate lithium‐ion batteries and potassium‐ion batteries through a ball‐milling method. These SnSb 2 Te 4 /G composite electrodes show ultralong cycle lifespan (478 mAh g −1 at 1 A g −1 after 1000 cycles) and excellent rate capability (remaining 373 mAh g −1 even at 10 A g −1 ) in Li‐ion storage owing to the rapid ion transport accelerated by the PN heterojunction, virtual electron highways provided by the conductive topological surface state, and extraordinary pseudocapacitive contribution, whose excellent phase reversibility is confirmed by synchrotron in situ X‐ray powder diffraction. Surprisingly, durable lifespan even at practical levels of mass loading ( mg cm −2 ) for Li‐ion storage and excellent K‐ion storage performance are also observed. This work provides new insights for designing high‐rate electrode materials by boosting conductive topological surfaces, atomic doping, and the interface interaction.
Publisher: American Chemical Society (ACS)
Date: 14-07-2014
DOI: 10.1021/NN503582C
Abstract: Structural phase transitions can be used to alter the properties of a material without adding any additional elements and are therefore of significant technological value. It was found that the hexagonal-SnS2 phase can be transformed into the orthorhombic-SnS phase after an annealing step in an argon atmosphere, and the thus transformed SnS shows enhanced sodium-ion storage performance over that of the SnS2, which is attributed to its structural advantages. Here, we provide the first report on a SnS@graphene architecture for application as a sodium-ion battery anode, which is built from two-dimensional SnS and graphene nanosheets as complementary building blocks. The as-prepared SnS@graphene hybrid nanostructured composite delivers an excellent specific capacity of 940 mAh g(-1)and impressive rate capability of 492 and 308 mAh g(-1) after 250 cycles at the current densities of 810 and 7290 mA g(-1), respectively. The performance was found to be much better than those of most reported anode materials for Na-ion batteries. On the basis of combined ex situ Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and ex situ X-ray diffraction, the formation mechanism of SnS@graphene and the synergistic Na-storage reactions of SnS in the anode are discussed in detail. The SnS experienced a two-structural-phase transformation mechanism (orthorhombic-SnS to cubic-Sn to orthorhombic-Na3.75Sn), while the SnS2 experienced a three-structural-phase transformation mechanism (hexagonal-SnS2 to tetragonal-Sn to orthorhombic-Na3.75Sn) during the sodiation process. The lesser structural changes of SnS during the conversion are expected to lead to good structural stability and excellent cycling stability in its sodium-ion battery performance. These results demonstrate that the SnS@graphene architecture offers unique characteristics suitable for high-performance energy storage application.
Publisher: Frontiers Media SA
Date: 12-11-2020
Publisher: American Chemical Society (ACS)
Date: 08-04-2016
DOI: 10.1021/JACS.6B00858
Abstract: The exploration of efficient nonprecious metal eletrocatalysis of the hydrogen evolution reaction (HER) is an extraordinary challenge for future applications in sustainable energy conversion. The family of first-row-transition-metal dichalcogenides has received a small amount of research, including the active site and dynamics, relative to their extraordinary potential. In response, we developed a strategy to achieve synergistically active sites and dynamic regulation in first-row-transition-metal dichalcogenides by the heterogeneous spin states incorporated in this work. Specifically, taking the metallic Mn-doped pyrite CoSe2 as a self-adaptived, subtle atomic arrangement distortion to provide additional active edge sites for HER will occur in the CoSe2 atomic layers with Mn incorporated into the primitive lattice, which is visually verified by HRTEM. Synergistically, the density functional theory simulation results reveal that the Mn incorporation lowers the kinetic energy barrier by promoting H-H bond formation on two adjacently adsorbed H atoms, benefiting H2 gas evolution. As a result, the Mn-doped CoSe2 ultrathin nanosheets possess useful HER properties with a low overpotential of 174 mV, an unexpectedly small Tafel slope of 36 mV/dec, and a larger exchange current density of 68.3 μA cm(-2). Moreover, the original concept of coordinated regulation presented in this work can broaden horizons and provide new dimensions in the design of newly highly efficient catalysts for hydrogen evolution.
Publisher: Wiley
Date: 13-12-2018
Abstract: Nitrate is a raw ingredient for the production of fertilizer, gunpowder, and explosives. Developing an alternative approach to activate the N≡N bond of naturally abundant nitrogen to form nitrate under ambient conditions will be of importance. Herein, pothole-rich WO
Publisher: Wiley
Date: 30-07-2018
Publisher: Elsevier BV
Date: 02-2023
Publisher: Wiley
Date: 20-04-2016
Abstract: As the delegate of tunnel structure sodium titanates, Na2 Ti6 O13 nanorods with dominant large interlayer spacing exposed facet are prepared. The exposed large interlayers provide facile channels for Na(+) insertion and extraction when this material is used as anode for Na-ion batteries (NIBs). After an activation process, this NIB anode achieves a high specific capacity (a capacity of 172 mAh g(-1) at 0.1 A g(-1) ) and outstanding cycling stability (a capacity of 109 mAh g(-1) after 2800 cycles at 1 A g(-1) ), showing its promising application on large-scale energy storage systems. Furthermore, the electrochemical and structural characterization reveals that the expanded interlayer spacings should be in charge of the activation process, including the enhanced kinetics, the lowered apparent activation energy, and the increased capacity.
Publisher: American Chemical Society (ACS)
Date: 27-12-2017
DOI: 10.1021/ACS.NANOLETT.6B04427
Abstract: Layered α-Ni(OH)
Publisher: Wiley
Date: 11-08-2020
Abstract: Volume expansion and poor conductivity are two major obstacles that hinder the pursuit of the lithium‐ion batteries with long cycling life and high power density. Herein, we highlight a misfit compound PbNbS 3 with a soft/rigid superlattice structure, confirmed by scanning tunneling microscopy and electrochemical characterization, as a promising anode material for high performance lithium‐ion batteries with optimized capacity, stability, and conductivity. The soft PbS sublayers primarily react with lithium, endowing capacity and preventing decomposition of the superlattice structure, while the rigid NbS 2 sublayers support the skeleton and enhance the migration of electrons and lithium ions, as a result leading to a specific capacity of 710 mAh g −1 at 100 mA g −1 , which is 1.6 times of NbS 2 and 3.9 times of PbS. Our finding reveals the competitive strategy of soft/rigid structure in lithium‐ion batteries and broadens the horizons of single‐phase anode material design.
Publisher: American Chemical Society (ACS)
Date: 22-01-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CE25309G
Publisher: Springer Science and Business Media LLC
Date: 12-01-2021
Publisher: Wiley
Date: 24-04-2017
Abstract: Ultrathin 2D materials can offer promising opportunities for exploring advanced energy storage systems, with satisfactory electrochemical performance. Engineering atomic interfaces by stacking 2D crystals holds huge potential for tuning material properties at the atomic level, owing to the strong layer-layer interactions, enabling unprecedented physical properties. In this work, atomically thin Bi
Publisher: Elsevier BV
Date: 02-2023
Publisher: Wiley
Date: 05-08-2016
Publisher: Elsevier BV
Date: 02-2020
Publisher: Wiley
Date: 28-07-2019
Publisher: Wiley
Date: 02-06-2021
Abstract: 2D non‐layered metal sulfides possess intriguing properties, rendering them bright application prospects in energy storage and conversion, however, the synthesis of non‐layered metal sulfide nanosheets is still significantly challenging. Herein, a surface‐charge‐regulating strategy is developed to fabricate microsized 2D non‐layered metal sulfides via manipulation of the isoelectric point, which can easily modulate the manner of surface charge arrangement during the growth of crystal nuclei. The result of this strategy are materials that are completely assembled with a preferred orientation but comprise a large lateral size with maintaining atomic thickness. A series of modified sulfides are successfully synthesized, demonstrating that their microarchitectures are shifted in an expected manner. Then, one of these materials, In 4 SnS 8 , approaches a promising candidate for sodium storage by means of its structural integrity, boosted transfer kinetics, and abundant active sites. The proposed synthetic protocol can open up a new opportunity to explore 2D non‐layered materials for energy‐related applications.
Publisher: American Chemical Society (ACS)
Date: 02-08-2017
Abstract: By scrutinizing the energy storage process in Li-ion batteries, tuning Li-ion migration behavior by atomic level tailoring will unlock great potential for pursuing higher electrochemical performance. Vacancy, which can effectively modulate the electrical ordering on the nanoscale, even in tiny concentrations, will provide tempting opportunities for manipulating Li-ion migratory behavior. Herein, taking CuGeO
Publisher: Wiley
Date: 14-04-2023
Abstract: The key means to improve the performance of lithium–sulfur batteries (LSBs) is to reduce the internal resistance by building an electronic/ionic pathway and to accelerate the conversion kinetics of lithium polysulfides (LiPSs) through modulation of interface functions. Herein, inspired by a grass root system, a flexible hierarchical CNF‐CNT (carbon nanofiber‐carbon nanotube) membrane decorated with Co‐doped NiS 2 nanoparticles (Co‐NiS 2 @CNF‐CNT) is designed as an interlayer for LSBs, in which the in situ grown CNTs (root hairs) are wound on CNF (roots). Density functional theory (DFT) calculations show that Co doping introduces electron‐deficient regions at the doping sites in NiS 2 , thus improving chemical adsorption and catalytic activities toward LiPSs. The cell pairs with the Co‐NiS 2 @CNF‐CNT interlayer exhibit a high rate performance of 951.4 mAh g −1 at 3 C, a reversible capacity of 944.1 mAh g −1 after 500 cycles at 0.2 C, and a prolonged cycle life of 3000 cycles at 5 C. More importantly, an areal capacity of 7.96 mAh cm −2 is achieved with a sulfur loading of 9.6 mg cm −2 . This work provides a strategy for enhancing the electrochemical performance of LSBs by combining 3D hierarchical conductive skeletons and electron‐deficient functional adsorption and catalysis materials.
Publisher: American Chemical Society (ACS)
Date: 06-09-2021
Publisher: Wiley
Date: 30-11-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3SC03884J
Abstract: Batteries that are both high-energy-density and durable at sub-zero temperatures are highly desirable for deep space, subsea exploration, and military defense applications. Our design incorporates a casting membrane technology to...
Start Date: 03-2019
End Date: 04-2021
Amount: $384,000.00
Funder: Australian Research Council
View Funded Activity