ORCID Profile
0000-0001-5476-0134
Current Organisation
University of Technology Sydney
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Materials engineering | Nanomaterials | Functional materials | Electrochemical energy storage and conversion
Publisher: Springer Science and Business Media LLC
Date: 25-04-2023
DOI: 10.1038/S41467-023-37898-8
Abstract: Performing CO 2 reduction in acidic conditions enables high single-pass CO 2 conversion efficiency. However, a faster kinetics of the hydrogen evolution reaction compared to CO 2 reduction limits the selectivity toward multicarbon products. Prior studies have shown that adsorbed hydroxide on the Cu surface promotes CO 2 reduction in neutral and alkaline conditions. We posited that limited adsorbed hydroxide species in acidic CO 2 reduction could contribute to a low selectivity to multicarbon products. Here we report an electrodeposited Cu catalyst that suppresses hydrogen formation and promotes selective CO 2 reduction in acidic conditions. Using in situ time-resolved Raman spectroscopy, we show that a high concentration of CO and OH on the catalyst surface promotes C-C coupling, a finding that we correlate with evidence of increased CO residence time. The optimized electrodeposited Cu catalyst achieves a 60% faradaic efficiency for ethylene and 90% for multicarbon products. When deployed in a slim flow cell, the catalyst attains a 20% energy efficiency to ethylene, and 30% to multicarbon products.
Publisher: Elsevier BV
Date: 06-2023
Publisher: AIP Publishing
Date: 08-05-2023
DOI: 10.1063/5.0147522
Abstract: Lithium–sulfur (Li–S) batteries have attracted increasing attention for next-generation energy storage systems with a high energy density and low cost. However, the practical applications have been plagued by the sluggish reaction kinetics and the shuttle effect of lithium polysulfides (LiPSs). Herein, core–shell SiO2@Ti3C2Tx MXene (SiO2@MX) hollow spheres are constructed as multifunctional catalysts to boost the performance of Li–S batteries. The dual-polar and dual-physical properties of SiO2 core and MXene shell provide multiple defense lines to the shuttle effect by chemical and physical confinement to LiPSs. Density functional theory calculations prove that Ti3C2Tx MXene and SiO2 enable the stronger trapping ability of LiPSs and the fast Li2S decomposition process. With this strategy, the robust SiO2@MX/S electrodes deliver superior electrochemical performances, including a high capacity of 1263 mAh g−1, and remarkable cycling stability with an ultralow capacity decay of 0.04% per cycle over 1000 cycles at 1 C. This work highlights the significance of core-shell dual-polar structural sulfur catalysts for practical application in advanced Li–S batteries.
Publisher: Elsevier BV
Date: 06-2013
Publisher: Elsevier BV
Date: 07-2021
Publisher: American Chemical Society (ACS)
Date: 07-07-2010
Publisher: Springer Science and Business Media LLC
Date: 13-03-2023
Publisher: Elsevier BV
Date: 04-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA03877K
Abstract: Multi-shelled hollow carbon nanospheres with a high specific surface area of 1050 m 2 g −1 were prepared by an aqueous emulsion approach, which achieved a high percentage of sulfur loading (86 wt%). When applied as cathodes in lithium–sulfur batteries, the composites delivered a high specific capacity of 1350 mA h g −1 at a current rate of 0.1 C, significantly enhanced cyclability and high rate performance.
Publisher: Wiley
Date: 22-10-2014
Abstract: The long-standing challenge associated with capacity fading of spinel LiMn2 O4 cathode material for lithium-ion batteries is investigated. Single-crystalline spinel LiMn2 O4 nanorods were successfully synthesized by a template-engaged method. Porous Mn3 O4 nanorods were used as self-sacrificial templates, into which LiOH was infiltrated by a vacuum-assisted impregnation route. When used as cathode materials for lithium-ion batteries, the spinel LiMn2 O4 nanorods exhibited superior long cycle life owing to the one-dimensional nanorod structure, single-crystallinity, and Li-rich effect. LiMn2 O4 nanorods retained 95.6 % of the initial capacity after 1000 cycles at 3C rate. In particular, the nanorod morphology of the spinel LiMn2 O4 was well-preserved after a long-term cycling, suggesting the ultrahigh structural stability of the single crystalline spinel LiMn2 O4 nanorods. This result shows the promising applications of single-crystalline spinel LiMn2 O4 nanorods as cathode materials for lithium-ion batteries with high rate capability and long cycle life.
Publisher: Research Square Platform LLC
Date: 03-06-2021
DOI: 10.21203/RS.3.RS-534571/V1
Abstract: Lithium-oxygen (Li-O 2 ) batteries have drawn intensive attention owing to their exceptionally high theoretical specific energy. However, their further advancement has been significantly hindered by challenges including low discharge capacity, poor energy efficiency, severe parasitic reactions, etc. Here, we report a highly Li-O 2 battery operated via a new quenching/mediating mechanism that relies on the direct chemical reactions between a versatile molecule and superoxide radical/Li 2 O 2 nanoparticles. The battery exhibits a 46-fold increase of discharge capacity, a low charge over-potential of 0.7 V, and an ultralong cycle life 1400 cycles. The tailor-designed organic molecule features two redox mediator-active 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) moieties bridged by a quenching-active perylene diimide (PDI) backbone. The PDI-TEMPO molecule not only acts as a soluble redox mediator to catalyze both discharge and charge reactions, but also serves as a reusable superoxide radical quencher to chemically react with superoxide species generated during the operation of Li-O 2 batteries, leading to the formation of Li 2 O 2 nanoparticles which are much easier to decompose than the conventional toroidal-shaped Li 2 O 2 . The all-in-one molecule as a multifunctional additive can tackle various issues of parasitic reactions associated with superoxide radicals, singlet oxygen, high over-potentials, and lithium corrosion, beyond the mere combination of PDI and TEMPO moieties’ functionalities. The molecular design of multifunctional additives combining the capabilities of redox mediators, superoxide radical quencher and beyond opens a new avenue for developing high-performance Li-O 2 batteries.
Publisher: Elsevier BV
Date: 07-2022
Publisher: Elsevier BV
Date: 12-2018
Publisher: Wiley
Date: 22-01-2015
Publisher: Elsevier BV
Date: 12-2013
Publisher: Springer Science and Business Media LLC
Date: 12-12-2018
Publisher: Springer Science and Business Media LLC
Date: 05-02-2019
DOI: 10.1038/S41467-019-08422-8
Abstract: Due to the high theoretical specific energy, the lithium–oxygen battery has been heralded as a promising energy storage system for applications such as electric vehicles. However, its large over-potentials during discharge–charge cycling lead to the formation of side-products, and short cycle life. Herein, we report an ionic liquid bearing the redox active 2,2,6,6-tetramethyl-1-piperidinyloxy moiety, which serves multiple functions as redox mediator, oxygen shuttle, lithium anode protector, as well as electrolyte solvent. The additive contributes a 33-fold increase of the discharge capacity in comparison to a pure ether-based electrolyte and lowers the over-potential to an exceptionally low value of 0.9 V. Meanwhile, its molecule facilitates smooth lithium plating/stripping, and promotes the formation of a stable solid electrolyte interface to suppress side-reactions. Moreover, the proportion of ionic liquid in the electrolyte influences the reaction mechanism, and a high proportion leads to the formation of amorphous lithium peroxide and a long cycling life ( 200 cycles). In particular, it enables an outstanding electrochemical performance when operated in air.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA04244A
Abstract: The major challenge in water splitting is to develop low cost electrocatalysts as alternatives for simultaneously generating oxygen and hydrogen.
Publisher: Wiley
Date: 29-01-2014
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA11809G
Abstract: An sodium terephthalate@graphene (Na 2 TP@GE) hybrid with an interconnected, multi-channelled monolith structure was synthesized via freeze-drying technique. This material exhibits outstanding electrochemical performance for sodium-ion batteries.
Publisher: Wiley
Date: 21-12-2017
Abstract: Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale energy storage. One of the most promising cathode material candidates for sodium-ion batteries is Na
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4NR07054B
Abstract: Enhanced electron transfer efficiency plays a dominant role for improving the performance of SnO 2 /N-doped graphene for sodium-ion batteries.
Publisher: Wiley
Date: 28-05-2021
Abstract: Hard carbons with low cost and high specific capacity hold great potential as anode materials for potassium‐based energy storage. However, their sluggish reaction kinetics and inevitable volume expansion degrade their electrochemical performance. Through rational nanostructure design and a heteroatom doping strategy, herein, the synthesis of phosphorus/oxygen dual‐doped porous carbon spheres is reported, which possess expanded interlayer distances, abundant redox active sites, and oxygen‐rich defects. The as‐developed battery‐type anode material shows high discharge capacity (401 mAh g −1 at 0.1 A g −1 ), outstanding rate capability, and ultralong cycling stability (89.8% after 10 000 cycles). In situ Raman spectroscopy and density functional theory calculations further confirm that the formation of PC and PO/POH bonds not only improves structural stability, but also contributes to a rapid surface‐controlled potassium adsorption process. As a proof of concept, a potassium‐ion hybrid capacitor is assembled by a dual‐doped porous carbon sphere anode and an activated carbon cathode. It shows superior electrochemical performance, which opens a new avenue to innovative potassium‐based energy storage technology.
Publisher: American Chemical Society (ACS)
Date: 29-01-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 26-06-2014
DOI: 10.1039/C4TA01888E
Publisher: American Chemical Society (ACS)
Date: 11-09-2023
Publisher: Elsevier BV
Date: 04-2015
Publisher: Cold Spring Harbor Laboratory
Date: 02-02-2020
DOI: 10.1101/2020.02.01.929646
Abstract: Adult neurogenesis in the dentate gyrus of the hippoc us is regulated by specific groups of microglia and is functionally implicated in behavioral responses to stress. However, the role of microglia in modulating hippoc al neurogenesis in stress responses remains poorly understood. Here we investigated the effects of IL4-driven Arg1 + microglia in the restoration of hippoc al neurogenesis and conferment of stress resilience. We found that low IL4 levels in the hippoc us of mice was associated with greater stress vulnerability and, conversely, overexpression of IL4 in the hippoc us induced a large number of Arg1 + microglia and ameliorated stress-induced depressive-like behaviors. Knockdown of microglial IL4 receptors in the hippoc us of mice exacerbated the stress-induced inflammatory response and abolished the antidepressant effects of IL4 overexpression. Enhancement or inhibition of IL4 signaling in hippoc al microglia modulated neurogenesis, and blockade of neurogenesis abolished the resilience to stress-induced depression. We further show that IL4-activated microglia is associated with upregulation of BDNF levels and neurogenesis. Taken together, our findings suggest that IL4-driven microglia in the hippoc us trigger BDNF-dependent neurogenesis in response to chronic stress, helping protect against depressive-like symptoms. These findings identify the modulation of a specific microglial phenotype as a treatment strategy for mood disorders. Zhang et al. show that IL4-induced Arg1 + microglia restore hippoc al neurogenesis and promote resilience against stress in mice by increasing BDNF levels. Targeting microglia with immunomodulatory factors may be a strategy for treating mood disorders. Vulnerability to stress in mice is associated with reduced IL4 signaling in the hippoc us Brain-derived IL4 promotes adult hippoc al neurogenesis and stress resistance by driving Arg1 + microglia IL4-driven Arg1 + microglia enhance hippoc al neurogenesis via a BDNF-dependent pathway
Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 11-2015
Publisher: Wiley
Date: 03-09-2021
Abstract: Single‐atom catalysts (SACs) have been at the frontier of research field in catalysis owing to the maximized atomic utilization, unique structures and properties. The atomically dispersed and catalytically active metal atoms are necessarily anchored by surrounding atoms. As such, the structure and composition of anchoring sites significantly influence the catalytic performance of SACs even with the same metal element. Significant progress has been made to understand structure–activity relationships at an atomic level, but in‐depth understanding in precisely designing highly efficient SACs for the targeted reactions is still required. In this review, various anchoring sites in SACs are summarized and classified into five different types (doped heteroatoms, defect sites, surface atoms, metal sites, and cavity sites). Then, their impacts on catalytic performance are elucidated for electrochemical reactions based on their distance from the metal center (first coordination shell and beyond). Further, SACs anchored on two typical types of hosts, carbon‐ and metal‐based materials, are highlighted, and the effects of anchoring points on achieving the desirable atomic structure, catalytic performance, and reaction pathways are elaborated. At last, insights and outlook to the SAC field based on current achievements and challenges are presented.
Publisher: Springer Science and Business Media LLC
Date: 27-10-2020
DOI: 10.1038/S41467-020-19246-2
Abstract: The practical applications of lithium metal anodes in high-energy-density lithium metal batteries have been hindered by their formation and growth of lithium dendrites. Herein, we discover that certain protein could efficiently prevent and eliminate the growth of wispy lithium dendrites, leading to long cycle life and high Coulombic efficiency of lithium metal anodes. We contend that the protein molecules function as a “self-defense” agent, mitigating the formation of lithium embryos, thus mimicking natural, pathological immunization mechanisms. When added into the electrolyte, protein molecules are automatically adsorbed on the surface of lithium metal anodes, particularly on the tips of lithium buds, through spatial conformation and secondary structure transformation from α-helix to β-sheets. This effectively changes the electric field distribution around the tips of lithium buds and results in homogeneous plating and stripping of lithium metal anodes. Furthermore, we develop a slow sustained-release strategy to overcome the limited dispersibility of protein in the ether-based electrolyte and achieve a remarkably enhanced cycling performance of more than 2000 cycles for lithium metal batteries.
Publisher: Wiley
Date: 25-07-2018
Publisher: Wiley
Date: 20-03-2023
Abstract: The oxygen reduction reaction (ORR) on transition single‐atom catalysts (SACs) is sustainable in energy‐conversion devices. However, the atomically controllable fabrication of single‐atom sites and the sluggish kinetics of ORR have remained challenging. Here, we accelerate the kinetics of acid ORR through a direct O−O cleavage pathway through using a bi‐functional ligand‐assisted strategy to pre‐control the distance of hetero‐metal atoms. Concretely, the as‐synthesized Fe−Zn diatomic pairs on carbon substrates exhibited an outstanding ORR performance with the ultrahigh half‐wave potential of 0.86 V vs. RHE in acid electrolyte. Experimental evidence and density functional theory calculations confirmed that the Fe−Zn diatomic pairs with a specific distance range of around 3 Å, which is the key to their ultrahigh activity, average the interaction between hetero‐diatomic active sites and oxygen molecules. This work offers new insight into atomically controllable SACs synthesis and addresses the limitations of the ORR dissociative mechanism.
Publisher: Wiley
Date: 29-12-2019
Abstract: Benefiting from the natural abundance and low standard redox potential of potassium, potassium-ion batteries (PIBs) are regarded as one of the most promising alternatives to lithium-ion batteries for low-cost energy storage. However, most PIB electrode materials suffer from sluggish thermodynamic kinetics and dramatic volume expansion during K
Publisher: Wiley
Date: 09-09-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA47372D
Publisher: American Chemical Society (ACS)
Date: 09-03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA00212J
Abstract: A Ti 3 C 2 T x MXene/rGO hybrid aerogel is applied for the first time as a free-standing polysulfide reservoir to inhibit the shuttle effect and improve the overall performance of Li–S batteries.
Publisher: Springer Science and Business Media LLC
Date: 13-03-2023
Publisher: Wiley
Date: 16-12-2016
Publisher: Elsevier BV
Date: 08-2014
Publisher: Wiley
Date: 04-09-2015
Abstract: The development of efficient catalysts for electrochemical hydrogen evolution is essential for energy conversion technologies. Molybdenum disulfide (MoS 2 ) has emerged as a promising electrocatalyst for hydrogen evolution reaction, and its performance greatly depends on its exposed edge sites and conductivity. Layered MoS 2 nanosheets supported on a 3D graphene aerogel network (GA‐MoS 2 ) exhibit significant catalytic activity in hydrogen evolution. The GA‐MoS 2 composite displays a unique 3D architecture with large active surface areas, leading to high catalytic performance with low overpotential, high current density, and good stability.
Publisher: Wiley
Date: 22-07-2019
Abstract: 2D genuine unilamellar nanosheets, that are, the elementary building blocks of their layered parent crystals, have gained increasing attention, owing to their unique physical and chemical properties, and 2D features. In parallel with the great efforts to isolate these atomic-thin crystals, a unique strategy to integrate them into 2D vertically stacked heterostuctures has enabled many functional applications. In particular, such 2D heterostructures have recently exhibited numerous exciting electrochemical performances for energy storage and conversion, especially the molecular-scale heteroassembled superlattices using erse 2D unilamellar nanosheets as building blocks. Herein, the research progress in scalable synthesis of 2D superlattices with an emphasis on a facile solution-phase flocculation method is summarized. A particular focus is brought to the advantages of these 2D superlattices in applications of supercapacitors, rechargeable batteries, and water-splitting catalysis. The challenges and perspectives on this promising field are also outlined.
Publisher: American Chemical Society (ACS)
Date: 14-11-2018
Abstract: Cation-deficient two-dimensional (2D) materials, especially atomically thin nanosheets, are highly promising electrode materials for electrochemical energy storage that undergo metal ion insertion reactions, yet they have rarely been achieved thus far. Here, we report a Ti-deficient 2D unilamellar lepidocrocite-type titanium oxide (Ti
Publisher: American Chemical Society (ACS)
Date: 19-01-2022
DOI: 10.1021/ACS.NANOLETT.1C04389
Abstract: Rationally electronic structure engineering of nanocomposite electrodes shows great promise for enhancing the electrochemical performance of rechargeable batteries. Herein, we report antimony single atoms and quantum dots (∼5 nm) codecorated Ti
Publisher: Elsevier BV
Date: 07-2019
DOI: 10.1016/J.JCIS.2019.04.004
Abstract: Two-dimensional (2D) molybdenum sulfide (MoS
Publisher: IOP Publishing
Date: 16-11-2019
Abstract: WS
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2EY00046F
Abstract: In a direct carbonate electrolysis system, a CO 2 diffusion layer enabled the production of CO-rich syngas.
Publisher: Elsevier BV
Date: 12-2014
Publisher: Springer Science and Business Media LLC
Date: 09-02-2023
Publisher: American Chemical Society (ACS)
Date: 06-09-2018
Abstract: Lithium-rich oxides have been regarded as one of the most competitive cathode materials for next-generation lithium-ion batteries due to their high theoretical specific capacity and high discharge voltage. However, they are still far from being commercialized due to low rate capability and poor cycling stability. In this study, we propose a heterostructured LiAlF
Publisher: Wiley
Date: 23-05-2017
Abstract: Large over-potentials owing to the sluggish kinetics of battery reactions have always been the drawbacks of Li-O
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA05936A
Abstract: Fe 3 C based catalysts are found to be one of the most promising electrocatalysts for the oxygen evolution reaction (OER).
Publisher: American Chemical Society (ACS)
Date: 05-12-2019
DOI: 10.1021/JACS.9B09352
Abstract: Designing atomically dispersed metal catalysts for oxygen reduction reaction (ORR) is a promising approach to achieve efficient energy conversion. Herein, we develop a template-assisted method to synthesize a series of single metal atoms anchored on porous N,S-codoped carbon (NSC) matrix as highly efficient ORR catalysts to investigate the correlation between the structure and their catalytic performance. The structure analysis indicates that an identical synthesis method results in distinguished structural differences between Fe-centered single-atom catalyst (Fe-SAs/NSC) and Co-centered/Ni-centered single-atom catalysts (Co-SAs/NSC and Ni-SAs/NSC) because of the different trends of each metal ion in forming a complex with the N,S-containing precursor during the initial synthesis process. The Fe-SAs/NSC mainly consists of a well-dispersed FeN
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA00317F
Abstract: A ruthenium-decorated hierarchically ordered macro–mesoporous carbon (MmC@Ru) obtained via a mixed template method exhibits excellent electrochemical performance for lithium oxygen batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA04800B
Abstract: Novel ultrathin hollow carbon spheres with a nonporous shell are employed as polysulfide reservoirs to improve the overall performance of Li-S batteries.
Publisher: Wiley
Date: 11-04-2014
Abstract: Na-ion batteries have been attracting intensive investigations as a possible alternative to Li-ion batteries. Herein, we report the synthesis of SnS2 nanoplatelet@graphene nanocomposites by using a morphology-controlled hydrothermal method. The as-prepared SnS2/graphene nanocomposites present a unique two-dimensional platelet-on-sheet nanoarchitecture, which has been identified by scanning and transmission electron microscopy. When applied as the anode material for Na-ion batteries, the SnS2/graphene nanosheets achieved a high reversible specific sodium-ion storage capacity of 725 mA h g(-1), stable cyclability, and an enhanced high-rate capability. The improved electrochemical performance for reversible sodium-ion storage could be ascribed to the synergistic effects of the SnS2 nanoplatelet/graphene nanosheets as an integrated hybrid nanoarchitecture, in which the graphene nanosheets provide electronic conductivity and cushion for the active SnS2 nanoplatelets during Na-ion insertion and extraction processes.
Publisher: Springer Science and Business Media LLC
Date: 29-08-2014
DOI: 10.1038/SREP06007
Publisher: American Chemical Society (ACS)
Date: 22-05-2019
Publisher: Elsevier BV
Date: 09-2019
Publisher: Wiley
Date: 31-05-2018
Abstract: Sodium (Na) metal is one of the most promising electrode materials for next-generation low-cost rechargeable batteries. However, the challenges caused by dendrite growth on Na metal anodes restrict practical applications of rechargeable Na metal batteries. Herein, a nitrogen and sulfur co-doped carbon nanotube (NSCNT) paper is used as the interlayer to control Na nucleation behavior and suppress the Na dendrite growth. The N- and S-containing functional groups on the carbon nanotubes induce the NSCNTs to be highly "sodiophilic," which can guide the initial Na nucleation and direct Na to distribute uniformly on the NSCNT paper. As a result, the Na-metal-based anode (Na/NSCNT anode) exhibits a dendrite-free morphology during repeated Na plating and striping and excellent cycling stability. As a proof of concept, it is also demonstrated that the electrochemical performance of sodium-oxygen (Na-O
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2NR06096E
Abstract: Developing efficient and robust catalysts to replace Pt group metals for the oxygen reduction reaction (ORR) is conducive to achieving highly efficient energy conversion.
Publisher: Wiley
Date: 20-05-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2CS00698G
Abstract: This review summarizes engineering strategies to modify MXene-based catalysts and their active site identification for applications in electrochemical conversion reactions.
Publisher: American Chemical Society (ACS)
Date: 16-10-2023
Publisher: Wiley
Date: 18-01-2021
Abstract: During the global outbreak of COVID‐19 pandemic, “cytokine storm” conditions are regarded as the fatal step resulting in most mortality. Hemoperfusion is widely used to remove cytokines from the blood of severely ill patients to prevent uncontrolled inflammation induced by a cytokine storm. This article discoveres, for the first time, that 2D Ti 3 C 2 T x MXene sheet demonstrates an ultrahigh removal capability for typical cytokine interleukin‐6. In particular, MXene shows a 13.4 times higher removal efficiency over traditional activated carbon absorbents. Molecular‐level investigations reveal that MXene exhibits a strong chemisorption mechanism for immobilizing cytokine interleukin‐6 molecules, which is different from activated carbon absorbents. MXene sheet also demonstrates excellent blood compatibility without any deleterious side influence on the composition of human blood. This work can open a new avenue to use MXene sheets as an ultraefficient hemoperfusion absorbent to eliminate the cytokine storm syndrome in treatment of severe COVID‐19 patients.
Publisher: Elsevier BV
Date: 08-2020
Publisher: American Chemical Society (ACS)
Date: 06-02-2020
Publisher: American Chemical Society (ACS)
Date: 05-01-2021
Publisher: Springer Science and Business Media LLC
Date: 03-07-2020
DOI: 10.1038/S41467-020-17014-W
Abstract: Beyond-lithium-ion batteries are promising candidates for high-energy-density, low-cost and large-scale energy storage applications. However, the main challenge lies in the development of suitable electrode materials. Here, we demonstrate a new type of zero-strain cathode for reversible intercalation of beyond-Li + ions (Na + , K + , Zn 2+ , Al 3+ ) through interface strain engineering of a 2D multilayered VOPO 4 -graphene heterostructure. In-situ characterization and theoretical calculations reveal a reversible intercalation mechanism of cations in the 2D multilayered heterostructure with a negligible volume change. When applied as cathodes in K + -ion batteries, we achieve a high specific capacity of 160 mA h g −1 and a large energy density of ~570 W h kg −1 , presenting the best reported performance to date. Moreover, the as-prepared 2D multilayered heterostructure can also be extended as cathodes for high-performance Na + , Zn 2+ , and Al 3+ -ion batteries. This work heralds a promising strategy to utilize strain engineering of 2D materials for advanced energy storage applications.
Publisher: American Chemical Society (ACS)
Date: 05-08-2020
Publisher: Wiley
Date: 16-04-2020
Publisher: American Association for the Advancement of Science (AAAS)
Date: 21-01-2022
Abstract: The advancement of lithium-oxygen (Li-O 2 ) batteries has been hindered by challenges including low discharge capacity, poor energy efficiency, severe parasitic reactions, etc. We report an Li-O 2 battery operated via a new quenching/mediating mechanism that relies on the direct chemical reactions between a versatile molecule and superoxide radical/Li 2 O 2 . The battery exhibits a 46-fold increase in discharge capacity, a low charge overpotential of 0.7 V, and an ultralong cycle life cycles. Featuring redox-active 2,2,6,6-tetramethyl-1-piperidinyloxy moieties bridged by a quenching-active perylene diimide backbone, the tailor-designed molecule acts as a redox mediator to catalyze discharge/charge reactions and serves as a reusable superoxide quencher to chemically react with superoxide species generated during battery operation. The all-in-one molecule can simultaneously tackle issues of parasitic reactions associated with superoxide radicals, singlet oxygen, high overpotentials, and lithium corrosion. The molecular design of multifunctional additives combining various capabilities opens a new avenue for developing high-performance Li-O 2 batteries.
Publisher: Elsevier BV
Date: 04-2017
Publisher: American Chemical Society (ACS)
Date: 03-06-2019
DOI: 10.1021/ACS.NANOLETT.9B01329
Abstract: Molecular-scale modulation of interfaces between different unilamellar nanosheets in superlattices is promising for efficient catalytic activities. Here, three kinds of superlattices from alternate restacking of any two of the three unilamellar nanosheets of MoS
Publisher: Springer Science and Business Media LLC
Date: 21-08-2023
Publisher: Elsevier BV
Date: 09-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC04229A
Abstract: Hollow polypyrrole nanospheres demonstrated high current rate capacity and superior stable rate capability for Na-ion batteries.
Start Date: 06-2024
End Date: 05-2027
Amount: $453,847.00
Funder: Australian Research Council
View Funded Activity