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Understanding Degradation and Enhancing Cycling Stability for High-Voltage LiCoO2-Based Li-Metal Batteries

文献类型：期刊论文

作者Wu, Baolin9,10; Chang ZH(常正华)7,8; Chen, Zhiqiang6; Windmueller, Anna10; Tsai, ChihLong10; Qin, Zhizhen9,10; Danilov, Dmitri L5,10; Zhou, Lei4,5; Daniel, Davis Thomas10; Schaps, Kristian10
刊名ADVANCED ENERGY MATERIALS
出版日期2024-12-19
页码11
关键词electrolyte optimization high energy, high voltage Li-metal batteries Li-dendrites suppression surface modification
ISSN号1614-6832
DOI10.1002/aenm.202404028
通讯作者Chen, Chunguang(chenchunguang@imech.ac.cn) ; Wei, Yujie(yujie_wei@lnm.imech.ac.cn) ; Notten, Peter H. L.(p.h.l.notten@tue.nl)
英文摘要Improving the energy density of Lithium (Li)-ion batteries (LIBs) is vital in meeting the growing demand for high-performance energy storage and conversion systems. Developing high-voltage LIBs using high-capacity and high-voltage cathode materials is promising for enhancing energy density. However, conventional cathode and electrolyte materials face serious decomposition and structural degradation at high operating voltages. Herein, a dual-salts electrolyte of lithium bis(fluorosulfonyl)imide and lithium bis(trifluoromethanesulfonyl)imide(LiFSI-LiTFSI) is developed to improve the cycling stability of high-voltage lithium cobalt oxide (LiCoO2, LCO)||Li batteries. Operando X-ray diffraction analysis experiments are carried out to characterize the structural stability of cathode materials, suggesting a severe irreversible phase transformation at high voltage levels. Aging simulations, combined with experimental studies, suggest that a fast loss of active materials is mainly responsible for the capacity loss at high voltages. Carbon-coated LCO cathodes are synthesized to mitigate cycling degradation. The designed LCO||Li cells exhibit a high-capacity retention of over 85% after 400 cycles at 4 .7V. The present work provides a novel insight into understanding the degradation and enhancing the stability of high-voltage LCO-based Li-metal batteries, thus facilitating their practical applications.
分类号一类
WOS关键词ION BATTERIES ; ELECTROLYTE INTERPHASE ; CARBONATE SOLUTIONS ; ETHER ELECTROLYTES ; LITHIUM ; PERFORMANCE
资助项目Research Foundation for Advanced Talents of Jiangsu University[52202244] ; China Scholarship Council - National Natural Science Foundation of China[BK20220540] ; Natural Science Foundation of Jiangsu Province, China[2024M751176] ; China Postdoctoral Science Foundation[22JDG010] ; Research Foundation for Advanced Talents of Jiangsu University, China[03ETE046C] ; BMBF, Germany ; Chinese Academy of Sciences[Z240001] ; Beijing Natural Science Foundation
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种英语
WOS记录号WOS:001380216200001
资助机构Research Foundation for Advanced Talents of Jiangsu University ; China Scholarship Council - National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province, China ; China Postdoctoral Science Foundation ; Research Foundation for Advanced Talents of Jiangsu University, China ; BMBF, Germany ; Chinese Academy of Sciences ; Beijing Natural Science Foundation
其他责任者Chen, Chunguang ; Wei, Yujie ; Notten, Peter H. L.
源URL[http://dspace.imech.ac.cn/handle/311007/97982]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Univ Technol Sydney, Broadway Sydney, Sydney, NSW 2007, Australia
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China;
4.Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Peoples R China;
5.EINDHOVEN UNIV TECHNOL, POB 513, 5600 MB EINDHOVEN, Netherlands;
6.CATL Future Energy Res Inst, Shanghai 200235, Peoples R China;
7.Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Peoples R China;
8.Eastern Inst Technol, Eastern Inst Adv Study, Ningbo 315200, Peoples R China;
9.Rhein Westfal TH Aachen, D-52074 Aachen, Germany;
10.Forsch Zentrum Julich IET 1, D-52425 Julich, Germany;
推荐引用方式
GB/T 7714		 Wu, Baolin,Chang ZH,Chen, Zhiqiang,et al. Understanding Degradation and Enhancing Cycling Stability for High-Voltage LiCoO2-Based Li-Metal Batteries[J]. ADVANCED ENERGY MATERIALS,2024:11.
APA Wu, Baolin.,常正华.,Chen, Zhiqiang.,Windmueller, Anna.,Tsai, ChihLong.,...&Notten, Peter H L.(2024).Understanding Degradation and Enhancing Cycling Stability for High-Voltage LiCoO2-Based Li-Metal Batteries.ADVANCED ENERGY MATERIALS,11.
MLA Wu, Baolin,et al."Understanding Degradation and Enhancing Cycling Stability for High-Voltage LiCoO2-Based Li-Metal Batteries".ADVANCED ENERGY MATERIALS (2024):11.

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来源：力学研究所

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