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Magnetically enhancing diffusion for dendrite-free and long-term stable lithium metal anodes

文献类型：期刊论文

作者Chen, Yongxiu1,2,3; Dou, Xiangyu1,2; Wang, Kai1,2; Han, Yongsheng1,2
刊名GREEN ENERGY & ENVIRONMENT
出版日期2022-10-01
卷号7期号:5页码:965-974
关键词Lithium metal batteries Lithium dendrites External magnetic fields Diffusion enhancement Concentration gradient
ISSN号2096-2797
DOI10.1016/j.gee.2020.12.014
英文摘要Lithium metal batteries are promising devices for the next-generation energy storage due to their ultrahigh theoretical specific capacity and extremely low electrochemical potential. Their inherent problem is the formation of lithium dendrites in cycling, which has induced safety concerns for almost half a century. After understanding the formation mechanism of branching structures, we propose to suppress lithium dendrites by adopting external magnetic fields to induce diffusion enhancement at the interface of the anode, thus attenuating concentration gradient there and reducing the driving force for the formation of dendritic structures. The diffusion coefficient of lithium ions is dependent on the strength of magnetic fields, confirming the effectiveness of magnetic fields in improving Li+ diffusion. After employing the magnetic field of 0.8 T, the concentration gradients at the growth front becomes nearly half of the control case, which leads to a dendrite-free lithium deposition up to the high current density of 10 mA cm(-2). Both the Cu vertical bar LiCoO2 batteries and the symmetric Li vertical bar Li coin cells show a long-term stable cycling at high current densities under the assistance of magnetic field. This diffusion enhanced technique promises a facile and general approach to suppress dendritic structures in secondary batteries, which may help to develop quick charging strategies. (C) 2020 Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.
WOS关键词ELECTROLYTE ; GROWTH ; PROTECTION ; BATTERIES ; LIQUID
资助项目National Natural Science Foundation of China[91934302] ; National Natural Science Foundation of China[21978298] ; National Natural Science Foundation of China[U1862117] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2019-D-12]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000886420700001
出版者KEAI PUBLISHING LTD
资助机构National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; State Key Laboratory of Multiphase Complex Systems
源URL[http://ir.ipe.ac.cn/handle/122111/55698]  
专题中国科学院过程工程研究所
通讯作者Han, Yongsheng
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100190, Peoples R China
3.Univ Birmingham, Sch Met & Mat, Birmingham BT15 2TT, England
推荐引用方式
GB/T 7714		 Chen, Yongxiu,Dou, Xiangyu,Wang, Kai,et al. Magnetically enhancing diffusion for dendrite-free and long-term stable lithium metal anodes[J]. GREEN ENERGY & ENVIRONMENT,2022,7(5):965-974.
APA Chen, Yongxiu,Dou, Xiangyu,Wang, Kai,&Han, Yongsheng.(2022).Magnetically enhancing diffusion for dendrite-free and long-term stable lithium metal anodes.GREEN ENERGY & ENVIRONMENT,7(5),965-974.
MLA Chen, Yongxiu,et al."Magnetically enhancing diffusion for dendrite-free and long-term stable lithium metal anodes".GREEN ENERGY & ENVIRONMENT 7.5(2022):965-974.

入库方式： OAI收割

来源：过程工程研究所

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