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An ion-percolating electrolyte membrane for ultrahigh efficient and dendrite-free lithium metal batteries

InfoMat 2023年第12期5卷 77-86页

作者： Yu-Ting Xu Sheng-Jia Dai Xiao-Feng Wang Xiong-Wei Wu Yu-Guo Guo xian-xiang zeng School of Chemistry and Materials Science Hunan Agricultural UniversityChangshaHunanthe People's Republic of China Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchunthe People's Republic of China Hunan Province Yinfeng New Energy Co. Ltd.ChangshaHunanthe People's Republic of China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijingthe People's Republic of China University of Chinese Academy of Sciences Beijingthe People's Republic of China

The development of lithium(Li)metal batteries has been severely limited by the formation of lithium dendrites and the associated catastrophic failure and inferior Coulombic efficiency which caused by non-uniform or insufficient Li^(+)supply across the electrode-electrolyte ***,a rational strategy is to construct a robust electrolyte that can allow efficient and uniform Li^(+)transport to ensure sufficient Li^(+)supply and homogenize the Li plating/***,we report an ion-percolating electrolyte membrane that acts as a stable Li^(+)reservoir to ensure a near-single Li^(+)transference number(0.78)and homogenizes Li^(+)migration to eradicate dendrite growth,endowing Li//LFP cell with an ultrahigh average Coulombic efficiency(ca.99.97%)after cycling for nearly half of a year and superior cycling stability when pairing with LiCoO_(2) with limited Li amount and LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2).These estimable attributes demonstrate significant potential of utility value for the ion-percolating electrolyte.

关键词： dendrite interface ionic transference number lithium metal battery solid electrolyte

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Electrode materials for aqueous multivalent metal-ion batteries: Current status and future prospect

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Journal of Energy Chemistry 2022年第4期31卷 563-584页

作者： Na Fu Yu-Ting Xu Shu Zhang Qi Deng Jun Liu Chun-Jiao Zhou Xiong-Wei Wu Yu-Guo Guo xian-xiang zeng School of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128HunanChina CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China

In recent years,the pursuit of high-efficiency electrochemical storage technology,the multivalent metalion batteries (MIBs) based on aqueous electrolytes have been widely explored by researchers because of their safety,environmental friendliness,abundant reserves and low price,and especially the merits in energy and power *** review firstly expounds on the problems existing in the electrode materials of aqueous multivalent MIBs (Zn^(2+),Mg^(2+),Al^(3+),Ca^(2+)),from the classical inorganic materials to the emerging organic compounds,and then summarizes the design strategies in bulk and interface structure of electrodes with favorable kinetics and stable cycling performance,especially laying the emphasis on the charge storage mechanism of cathode materials and dendrite-free Zinc anode from the aspect of electrolyte optimization strategies,which can be extended to other aqueous multivalent ***,the possible development directions of the aqueous multivalent MIBs in the future are provided,anticipating to provide a meaningful guideline for researchers in this area.

关键词： Multivalent metal Aqueous batteries Electrode materials Electrolytes Design strategies

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Bifunctional sulfonated covalent polymers as the modulator for oriented and highly reversible zinc plating

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Science China Chemistry 2023年第1期66卷 289-296页

作者： Meng-Jie Chen Qing-Yuan Zhao Hong-Rui Wang Tao Long Xin Ma Qing Wu Wen-Xin Zhou Xiong-Wei Wu xian-xiang zeng School of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128China College of Chemistry and Chemical Engineering Hunan Provincial Key Laboratory of Efficient and Clean Utilization of ManganeseResourcesCentral South UniversityChangsha 410083China Information and Network Center Central South UniversityChangsha 410083China

The vast superiority in resource sustainability and volumetric energy density enables metallic zinc(Zn)to construct costeffective and environment-benign battery systems for the energy ***,the problems of Zn dendrites and poor Coulombic efficiency(CE)during cell’s whole life cycle stump its advancement as a rechargeable battery *** solution is to modulate the Zn^(2+) desolvation prior to electro-reduction and subsequent ***,a transferred protection tactic via a bifunctional sulfonated covalent polymer interlayer is proposed to regulate the Zn2+desolvation,which affects the formation of solid-electrolyte interphase,and guides its plating along with preferable(002)crystal ***,the high initial CE of 96.3%and the long-term average CE of 99.8%for 310 cycles are achieved in Zn||Cu cells and 570-h circulation is also realized at 2 mA cm^(-2)/10 mAh cm^(-2)in Zn||Zn ***,Zn||hydrated vanadium oxide-based full batteries with the low-concentration organic electrolytes are also demonstrated with the high specific capacity of 173.8 mAh g^(-1)at 0.5 A g^(-1)and 64%capacity retention over 305 cycles and oriented Zn deposition.

关键词： Zn anode interface chemistry sulfonated covalent polymer oriented plating reversibility

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Improving the stability of LiNi_(0.80)Co_(0.15)Al_(0.05)O_2 by AlPO_4 nanocoating for lithium-ion batteries

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Science China Chemistry 2017年第9期60卷 1230-1235页

作者： Ran Qi Ji-Lei Shi Xu-Dong Zhang xian-xiang zeng Ya-Xia Yin Jian Xu Li Chen Wei-Gui Fu Yu-Guo Guo Li-Jun Wan State Key Laboratory of Separation Membranes and Membrane Processes School of Materials Science and EngineeringTt'anjin Polytechnic UniversityTianjin 300071China CAS Research/Education Center for Excellence in Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeo'ing 100190China School of Chemistry and Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

Nickel-rich layered materials,such as LiNi_(0.8)0Co_(0.15)Al_(0.05)O_2(NCA),have been considered as one alternative cathode materials for lithium-ion batteries(LIBs) due to their high capacity and low ***,their poor cycle life and low thermal stability,caused by the electrode/electrolyte side reaction,prohibit their prosperity in practical ***,AlPO4 has been homogeneously coated on the surface of NCA via wet chemical method towards the target of protecting NCA from the attack of *** with the bare NCA,NCA@AlPO_4 electrode delivers high capacity without sacrificing the discharge capacity and excellent cycling *** 150 cycles at 0.5 C between 3.0-4.3 V,the capacity retention of the coated material is 86.9%,much higher than that of bare NCA(66.8%).Furthermore,the thermal stability of cathode is much improved due to the protection of the uniform coating layer on the surface of *** results suggest that AlPO4 coated NCA materials could act as one promising candidate for next-generation LIBs with high energy density in the near future.

关键词： Li-ion batteries cathode materials surface modification AlPO4 coating

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Raising the capacity of lithium vanadium phosphate via anion and cation co-substitution

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Science China Chemistry 2020年第2期63卷 203-207页

作者： xian-xiang zeng Hui Chen Gang Guo Sheng-Yi Li Jin-Ying Liu Qiang Ma Guote Liu Ya-Xia Yin Xiong-Wei Wu Yu-Guo Guo College of Science Hunan Agricultural UniversityChangsha 410128China Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China College of Electrical Engineering and Automation Foshan UniversityFoshan 528225China

The pursuit for batteries with high specific energy provokes the research of high-voltage/capacity cathode materials with superior stability and safety as the alternative for lithium iron ***,using the sol-gel method,a lithium vanadium phosphate with higher average discharge voltage(3.8 V,***+/Li) was obtained from a single source for Mg2+ and Cl-co-substitution and uniform carbon coating,and a nearly theoretical capacity(130.1 mA h g^-1) and outstanding rate performance(25 C) are acquired together with splendid capacity retention(80%) after 650 *** work reveals that the well-sized anion and cation substitution and uniform carbon coating are of both importance to accelerate kinetic performance in the context of nearly undisturbed crystal structure for other analogue *** is anticipated that the electrochemistry comprehension will shed light on preparing cathode materials with high energy density in the future.

关键词： polyanion cathode ion substitution carbon coating high rate theoretical capacity

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High electro-catalytic graphite felt/Mn O2composite electrodes for vanadium redox flow batteries

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Science China Chemistry 2018年第6期61卷 732-738页

作者： Qiang Ma Qi Deng Hang Sheng Wei Ling Hong-Rui Wang Hai-Wen Jiao Xiong-Wei Wu Wen-Xin Zhou xian-xiang zeng Ya-Xia Yin Yu-Guo Guo College of Science Hunan Agricultural University Changsha 410128 China Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 China Hunan Province Yin Feng New Energy Co. LTD Changsha 410000 China

A mild and simple synthesis process for large-scale vanadium redox flow batteries(VRFBs)energy storage systems is desirable.A graphite felt/Mn O_2(GF-MNO)composite electrode with excellent electrocatalytic activity towards VO^(2+)/VO_2^+redox couples in a VRFB was synthesized by a one-step hydrothermal *** resulting GF-MNO electrodes possess improved electrochemical kinetic reversibility of the vanadium redox reactions compared to pristine GF electrodes,and the corresponding energy efficiency and discharge capacity at 150 m A cm^(-2)are increased by 12.5%and 40%,*** discharge capacity is maintained at 4.8 A h L^(-1)at the ultrahigh current density of 250 m A cm^(-2).Above all,80%of the energy efficiency of the GF-MNO composite electrodes is retained after 120 charge-discharge cycles at 150 m A cm^(-2).Furthermore,these electrodes demonstrated that more evenly distributed catalytic active sites were obtained from the Mn O_2particles under acidic *** proposed synthetic route is facile,and the raw materials are low cost and environmentally ***,these novel GF-MNO electrodes hold great promise in large-scale vanadium redox flow battery energy storage systems.

关键词： VRFB one-step hydrothermal graphite felt manganese dioxide composite electrode

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Designing High-Performance Composite Electrodes for Vanadium Redox Flow Batteries:Experimental and Computational Investigation

Designing High-Performance Composite Electrodes for Vanadium...

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中国化学会第三届中国能源材料化学研讨会

作者： Qiang Ma xian-xiang zeng Xiongwei Wu Yu-Guo Guo College of Science Hunan Agricultural University CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences (CAS) Hunan Province Yin Feng New Energy Co.LTD

＜正＞Highly catalytic electrodes are crucial to catalyze the redox reaction in the field of vanadium redox flow batteries（VRFBs）.However,a tedious synthesis process and ambiguous interaction mechanisms for catalyti...

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Insights into layered-tunnel dynamic structural evolution based on local coordination chemistry regulation for high-energy-density and long-cycle-life sodium-ion oxide cathodes

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InfoMat 2023年第10期5卷 32-42页

作者： Yao Xiao Yi-Feng Liu Hong-Wei Li Jia-Yang Li Jing-Qiang Wang Hai-Yan Hu Yu Su Zhuang-Chun Jian Hu-Rong Yao Shuang-Qiang Chen xian-xiang zeng Xiong-Wei Wu Jia-Zhao Wang Yan-Fang Zhu Shi-Xue Dou Shu-Lei Chou Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouthe People's Republic of China Wenzhou Key Laboratory of Sodium-Ion Batteries Wenzhou University Technology Innovation Institute for Carbon NeutralizationWenzhouthe People's Republic of China State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi'an Jiaotong UniversityXi'anthe People'sRepublic of China School of Chemistry and Materials Science Hunan Agricultural UniversityChangshathe People's Republic of China Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials University of Wollongong Innovation CampusNorth WollongongNew South WalesAustralia Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials College of Physics and EnergyFujian Normal UniversityFuzhouthe People's Republic of China

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 *** controllable structural evolution process is realized by tuning magnesium content in Na0.6Mn1-xMgxO2,which is elucidated by a combination of experimental analysis and theoretical *** substitution of Mg into Mn sites not only induces a unique structural evolu-tion from layered–tunnel structure to layered structure but also mitigates the Jahn–Teller distortion of Mn3+.Meanwhile,benefiting from the strong ionic inter-action between Mg2+and O2-,local environments around O2-coordinated with electrochemically inactive Mg2+are anchored in the TM layer,providing a pinning effect to stabilize crystal structure and smooth electrochemical *** layered–tunnel Na0.6Mn0.95Mg0.05O2 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 *** work may provide new insights of manipulating structural evolution in composite cathode materials via local coordi-nation chemistry regulation and inspire more novel design of high-performance SIB cathode materials.

关键词： dynamic structural evolution high-energy-density layered-tunnel structure local coordination chemistry sodium-ion oxide cathodes

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An Amphipathic Ionic Sieve Membrane for Durable and Dendrite-Free Zinc-Ion Batteries

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Renewables 2024年第1期2卷 52-60页

作者： xian-xiang zeng Shu Zhang Tao Long Qing-Yuan Zhao Hong-Rui Wang Wei Ling Xiong-Wei Wu Aiping Yu Zhongwei Chen School of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128 Department of Chemical Engineering University of WaterlooWaterlooOntario N2L 3G1 National Key Laboratory of Catalytic Energy Conversion Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023

Rechargeable aqueous zinc-ion batteries are expected to be widely deployed for grind-scale energy storage due to the merits of low expenditure,safety,and so ***,challenges on the Zn anode,including dendrite growth and parasitic reactions with aqueous electrolytes hinder its ***,an amphipathic ionic sieve(AIS)membrane was designed to screen Zn^(2+)from the bulk of aqueous electrolyte by ruling out water solvent and assisting Zn^(2+)to deposit with a smooth morphology under a confined *** benign characteristics enabled AIS to run Zn symmetric cells over 2300 h with a voltage of 1 mA h·cm^(−2) at each cycle and tolerated long-term standby for more than 3 months.A low self-discharge rate and outstanding cycling stability were realized in V_(2)O_(5)/Zn batteries at equal weight for cathode and anode(N/P ratio≈1.39).This asymmetrical wetting separator proved a facile strategy to solve interfacial dendrites and parasitic reactions in Zn metal-based batteries.

关键词： zinc anode dendrite amphipathicity desolvation separator

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Mutual regulation of microglia and astrocytes after Gas6 inhibits spinal cord injury

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Neural Regeneration Research 2025年第2期20卷 557-573页

作者： Jiewen Chen Xiaolin zeng Le Wang Wenwu Zhang Gang Li Xing Cheng Peiqiang Su Yong Wan xiang Li Department of Spine Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Guangdong Province Key Laboratory of Orthopedics and Traumatology GuangzhouGuangdong ProvinceChina

Invasive inflammation and excessive scar formation are the main reasons for the difficulty in repairing nervous tissue after spinal cord *** and astrocytes play key roles in the spinal cord injury micro-environment and share a close ***,the mechanisms involved remain *** this study,we found that after spinal cord injury,resting microglia(M0)were polarized into pro-inflammatory phenotypes(MG1 and MG3),while resting astrocytes were polarized into reactive and scar-forming *** expression of growth arrest-specific 6(Gas6)and its receptor Axl were significantly down-regulated in microglia and astrocytes after spinal cord *** vitro experiments showed that Gas6 had negative effects on the polarization of reactive astrocytes and pro-inflammatory microglia,and even inhibited the cross-regulation between *** further demonstrated that Gas6 can inhibit the polarization of reactive astrocytes by suppressing the activation of the Yes-associated protein signaling ***,in turn,inhibited the polarization of pro-inflammatory microglia by suppressing the activation of the nuclear factor-κB/p65 and Janus kinase/signal transducer and activator of transcription signaling *** vivo experiments showed that Gas6 inhibited the polarization of pro-inflammatory microglia and reactive astrocytes in the injured spinal cord,thereby promoting tissue repair and motor function ***,Gas6 may play a role in the treatment of spinal cord *** can inhibit the inflammatory pathway of microglia and polarization of astrocytes,attenuate the interaction between microglia and astrocytes in the inflammatory microenvironment,and thereby alleviate local inflammation and reduce scar formation in the spinal cord.

关键词： astrocytes Axl cell polarization Gas6 Hippo signal inflammatory micro-environment intercellular interaction microglia single-cell sequencing spinal cord injury

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