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Revealing the correlation between structure evolution and electrochemical performance of high-voltage lithium cobalt oxide

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Journal of Energy Chemistry 2021年第3期30卷 786-794页

作者： Jiajia Wan Jianping Zhu Yuxuan Xiang Guiming Zhong Xiangsi Liu Yixiao Li Kelvin H.L.Zhang Chaoyu Hong Jianming Zheng Kai Wang Yong Yang Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory for Physical Chemistry of Solid SurfaceCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina Xiamen Institute of Rare Earth Materials Haixi InstitutesChinese Academy of SciencesXiamen 361021FujianChina Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina Ningde Amperex Technology Ltd Ningde 352100FujianChina School of Energy Xiamen UniversityXiamen 361005FujianChina

lithium cobalt oxide(LCO)is the dominating cathode materials for lithium-ion batteries(LIBs)deployed in consumer electronic devices for its superior volumetric energy density and electrochemical performances.The constantly increasing demands of higher energy density urge to develop high-voltage LCO via a variety of strategies.However,the corresponding modification mechanism,especially the influence of the long-and short-range structural transitions at high-voltage on electrochemical performance,is still not well understood and needs further exploration.Based on ss-NMR,in-situ X-ray diffraction,and electrochemical performance results,it is revealed that the H3 to H1-3 phase transition dictates the structural reversibility and stability of LCO,thereby determining the electrochemical performance.The introduction of La and Al ions could postpone the appearance of H1-3 phase and induce various types of local environments to alleviate the volume variation at the atomic level,leading to better reversibility of the H1-3 phase and smaller lattice strain,and significantly improved cycle performance.Such a comprehensive long-range,local,and electronic structure characterization enables an in-depth understanding of the structural evolution of LCO,providing a guiding principle for developing high-voltage LCO for high energy density LIBs.

关键词： lithium cobalt oxide High-voltage In-situ XRD Solid-state NMR Structure change

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Upcycling the spent graphite/LiCoO_(2) batteries for high-voltage graphite/LiCoPO_(4)-co-workable dual-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1745-1751页

作者： Miao Du Hongyan Lü Kaidi Du Shuohang Zheng Xiaotong Wang Xiaotong Deng Ronghua Zeng Xinglong Wu Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal UniversityChangchun 130024China Faculty of Chemistry Northeast Normal UniversityChangchun 130024China School of Chemistry South China Normal UniversityGuangzhou 510006China

The worldwide proliferation of portable electronics has resulted in a dramatic increase in the number of spent lithium-ion batteries(LIBs).However,traditional recycling methods still have limitations because of such huge amounts of spent LIBs.Therefore,we proposed an ecofriendly and sustainable double recycling strategy to concurrently reuse the cathode(LiCoO_(2))and anode(graphite)materials of spent LIBs and recycled LiCoPO_(4)/graphite(RLCPG)in Li^(+)/PF^(-)_(6) co-de/intercalation dual-ion batteries.The recycle-derived dualion batteries of Li/RLCPG show impressive electrochemical performance,with an appropriate discharge capacity of 86.2 mAh·g^(-1) at25 mA·g^(-1) and 69%capacity retention after 400 cycles.Dual recycling of the cathode and anode from spent LIBs avoids wastage of resources and yields cathode materials with excellent performance,thereby offering an ecofriendly and sustainable way to design novel secondary batteries.

关键词： recycle lithium cobalt oxide lithium cobalt phosphate graphite dual-ion batteries spent lithium-ion batteries

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Dual-shell silicate and alumina coating for long lasting and high capacity lithium ion batteries

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Journal of Energy Chemistry 2022年第5期31卷 314-323页

作者： Marcos Lucero Tucker M.Holstun Yudong Yao Ryan Faase Maoyu Wang Alpha T.N’Diaye David P.Cann Joe Baio Junjing Deng Zhenxing Feng School of Chemical Biologicaland Environmental EngineeringOregon State UniversityCorvallisOR 97331United States Advanced Photon Source Argonne National LaboratoryArgonneIllinois 60439United States Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720United States Materials Science School of MechanicalIndustrialand Manufacturing EngineeringOregon State UniversityCorvallisOR 97331United States

Here we demonstrate a theory-driven, novel dual-shell coating system of Li_(2)SrSiO_(4) and Al_(2)O_(3), achieved via a facile and scalable sol-gel technique on LiCoO_(2) electrode particles. The optimal thickness of each coating can lead to increased specific capacity(~185 m Ah/g at 0.5 C-rate) at a cut-off potential of 4.5 V, and greater cycling stability at very high C rates(up to 10 C) in half-cells with lithium metal. The mechanism of this superior performance was investigated using a combination of X-ray and electron characterization methods. It shows that the results of this investigation can inform future studies to identify still better dual-shell coating schemes, achieved by such industrially feasible techniques, for application on similar, nickel-rich cathode materials.

关键词： lithium cobalt oxide Surface coating Sol-gel Silicate Alumina X-ray absorption spectroscopy

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Novel application of LiCoO_2 as a high-performance candidate material for supercapacitor

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Journal of Energy Chemistry 2015年第2期24卷 193-198页

作者： Yanan Xu Liangzhong Ding Tongsheng Zhong Xiao Han Lifang Jiao Huatang Yuan Yijing Wang Institute of New Energy Material Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Key Laboratory of Advanced Energy Materials Chemistry (MOE) Tianjin Key Lab of Metal and Molecule-Based Material Chemistry Nankai University College of Chemistry and Environment Engineering Hunan City University Maple Leaf International School-Tianjin TEDA

Electrochemical performances of LiCoO_2 as a candidate material for supercapacitor are systematically investigated. LiCoO_2 nanomaterials are synthesized via hydrothermal reaction with consequent calcination process. And the particle size increases as the calcination temperature rises. LCO-650 sample with the largest particle size displays the maximum capacitances of 817.5 F·g^-1 with the most outstanding capacity retention rate of 96.8% after 2000 cycles. It is shown that large particle size is beneficial to the electrochemical and structural stability of LiCoO_2 materials. We speculate that the micron-sized waste LiCoO_2 materials have great potential for supercapacitor application. It may provide a novel recovered approach for spent LIBs and effectively relieve the burdens on the resource waste and environment pollution.

关键词： lithium cobalt oxide hydrothermal reaction supercapacitor calcination

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Upcycling of spent LiCoO_(2) cathodes via nickel- and manganese-doping

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Carbon Energy 2023年第1期5卷 247-256页

作者： Nianji Zhang Wenjing Deng Zhixiao Xu Xiaolei Wang Department of Chemical and Materials Engineering University of AlbertaEdmontonAlbertaCanada

Direct recycling has been regarded as one of the most promising approaches to dealing with the increasing amount of spent lithium‐ion batteries(LIBs).However,the current direct recycling method remains insufficient to regenerate outdated cathodes to meet current industry needs as it only aims at recovering the structure and composition of degraded cathodes.Herein,a nickel(Ni)and manganese(Mn)co‐doping strategy has been adopted to enhance LiCoO_(2)(LCO)cathode for next‐generation high‐performance LIBs through a conventional hydrothermal treatment combined with short annealing approach.Unlike direct recycling methods that make no changes to the chemical composition of cathodes,the unique upcycling process fabricates a series of cathodes doped with different contents of Ni and Mn.The regenerated LCO cathode with 5%doping delivers excellent electrochemical performance with a discharge capacity of 160.23 mAh g^(−1) at 1.0 C and capacity retention of 91.2%after 100 cycles,considerably surpassing those of the pristine one(124.05 mAh g^(−1) and 89.05%).All results indicate the feasibility of such Ni–Mn co‐doping‐enabled upcycling on regenerating LCO cathodes.

关键词： direct recycling lithium cobalt oxide Ni–Mn co-doping spent lithium-ion batteries upcycling

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Improved electrochemical performances of high voltage LiCoO_2 with tungsten doping

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Chinese Physics B 2018年第8期27卷 605-611页

作者：张杰男李庆浩李泉禹习谦李泓 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China

The effects of tungsten W doping and coating on the electrochemical performance of LiCoO2 cathode are compara- tively studied in this work. The amount of modification component is as low as 0.1 wt% and 0.3 wt% respectively. After 100 cycles between 3.0 V-4.6 V, 0.1 wt% W doping provides an optimized capacity retention of 72.3%. However, W coating deteriorates battery performance with capacity retention of 47.8%, even lower than bare LiCoO2 of 55.7%. These different electrochemical performances can be attributed to the surface aggregation of W between doping and coating methods. W substitution is proved to be a promising method to develop high voltage cathodes. Practical performance relies on detailed synthesis method.

关键词： cathode lithium-ion batteries lithium cobalt oxide doping coating

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Design of Flexible and Self-Standing Electrodes for Li-lon Batteries

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Chinese Journal of Chemistry 2017年第1期35卷 41-47页

作者： Jean-Pierre Bourgeois Alexandru Vlad Sorin Melinte Jean-Frangois Gohy Institute of Condensed Matter and Nanosciences Universite catholique de Louvain Place Louis Pasteur 1 1348 Louvain-la-Neuve Belgium Electrical Engineering/ICTEAM Universite catholique de Louvain Place du Levant 3 1348 Louvain-la-Neuve Belgium

Flexible portable electronic devices have attracted increasing attention during the last decade. Energy consumption of such devices is ever increasing and performing power sources, that are moreover flexible, need to be developed to seamlessly integrate into such architectures. While lithium-ion batteries appear to be the best solution to meet the power and energy requirements, their structural and mechanical considerations still need to be addressed. Here, we realize and study the impact on the electrochemical performances of carbon nanotubes （CNTs） based, current collector-free and binder-free, Li-ion battery electrodes. Multi-walled carbon nanotubes acting as a mechanical and electron conductive scaffold enable structural flexibility and good electrochemical performances. Flexible Li-ion cells made with such electrodes show promising performances while being realized through simple manu- facturing approaches.

关键词： Li-ion batteries carbon nanotubes flexible batteries lithium cobalt oxide lithium titanium oxide

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利用钴酸锂构筑高体积比容量和高质量比容量硫电极

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Science China Materials 2021年第6期64卷 1343-1354页

作者：刘亚涛王璐刘胜李国然高学平 Institute of New Energy Material Chemistry School of Materials Science and EngineeringNankai UniversityTianjin 300350China

锂-硫电池的质量能量密度较高,但其体积能量密度却并不理想.为了提高锂-硫电池的体积能量密度,需要重点改善复合硫电极的结构和密度.本研究引入高密度的钴酸锂纳米纤维作为硫的载体材料.钴酸锂的振实密度高达2.26 g cm^(−3),硫/钴酸锂... 详细信息

锂-硫电池的质量能量密度较高,但其体积能量密度却并不理想.为了提高锂-硫电池的体积能量密度,需要重点改善复合硫电极的结构和密度.本研究引入高密度的钴酸锂纳米纤维作为硫的载体材料.钴酸锂的振实密度高达2.26 g cm^(−3),硫/钴酸锂电极的密度和孔隙率分别为0.85 g cm^(−3)和61.2%.研究发现,钴酸锂是一种优异的电催化剂,可以加速活性物质硫的反应速率.因此,硫/钴酸锂正极兼具致密的电极结构和良好的电化学活性,其体积能量密度得到显著提升,并同时保持较高的质量能量密度.当硫的面负载量为5.1 mg cm^(−2)时,整体硫/钴酸锂电极的体积和质量比容量分别为724 mA h cm^(−3)和848 mA h g^(−1).此外,钴酸锂可以减缓多硫化锂的穿梭并降低多硫化锂对锂负极的腐蚀,提高锂负极的稳定性.

关键词： lithium-sulfur battery sulfur cathode volumetric energy density lithium cobalt oxide catalytic activity

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钴酸锂薄膜的脉冲激光沉积制备及其电化学性能(英文)

钴酸锂薄膜的脉冲激光沉积制备及其电化学性能(英文)

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第十三次全国电化学会议

作者：张耀钟志源朱敏华南理工大学机械工程学院香港城市大学物理及材料科学系华南理工大学机械工程学院

Much attention has been attracted by all-solid-state thin-film batteries in recent years, which are regarded as one of the most promising micro-power sources. Up to date, lithium cobalt oxide thin fil

关键词： lithium cobalt oxide pulsed laser deposition thin film electrochemical properties

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废电池中钴酸锂的回收在超级电容器方面的应用

废电池中钴酸锂的回收在超级电容器方面的应用

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2015年第十四届全国应用化学年会

作者：胥亚楠董艳影王一菁袁华堂焦丽芳李菁南开大学化学学院天津化学化工协同创新中心先进能源材料教育部重点实验室

将废旧锂电池中回收的钴酸锂材料首次应用于水相的电容器体系,使用廉价DMF作为溶剂回收钴酸锂的溶剂回收法具有价格低廉,操作简便的优点,适合大规模工业生产。在2Ag电流密度下,回收的钴酸锂材料最大放电容量为654 F g,且循环4000周后容... 详细信息

将废旧锂电池中回收的钴酸锂材料首次应用于水相的电容器体系,使用廉价DMF作为溶剂回收钴酸锂的溶剂回收法具有价格低廉,操作简便的优点,适合大规模工业生产。在2Ag电流密度下,回收的钴酸锂材料最大放电容量为654 F g,且循环4000周后容量保持率仍为

关键词： lithium cobalt oxide recovery solvent method spent lithium ion batteries supercapacitors

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