Mechanism of lithium electrodeposition in a magnetic field

doi:10.1016/j.ssi.2019.115171

	Mechanism of lithium electrodeposition in a magnetic field
	Huang, Yuanqi; Wu, Xinsheng; Nie, Lu; Chen, Shaojie; Sun, Zhetao; He, Yingjie; Liu, Wei
	2020-02
发表期刊	SOLID STATE IONICS
ISSN	0167-2738
卷号	345
发表状态	已发表
DOI	10.1016/j.ssi.2019.115171
摘要	Lithium metal anode is a promising anode for next-generation lithium-based batteries. However, the lithium dendrite growth due to uneven Li-ion deposition could cause safety problem, and the unceasing formation of solid electrolyte interphase layer leads to capacity fading of anode. Here, we report a mechanism of Li electrodeposition under a magnetic field with the direction perpendicular or parallel to electric field in the cell systematically. We for the first time observe that at the initial nuclei stage the deposited Li metal is needlelike; for the later growth stage, a very compact deposits with dendrite-free structure can be obtained. Compared with perpendicular magnetic field, the parallel one can facilitate more uniform and dense lithium growth. The Lorentz force and the electric field force during Li platting are calculated and compared. It also indicates that the magnetic field can contribute to a smooth Li deposits after cycling at various current densities and deposited capacities. The polarization of the Li symmetrical cells is reduced in the magnetic field resulting in more stable cycling performance. In addition, improved electrochemical performance of the Li\|LiCoO2 half cells can be achieved by applying a magnetic field. The study demonstrates that the electromagnetic environment is critical to stabilizing Li-metal anode in high-energy-rechargeable batteries. © 2019 Elsevier B.V.
关键词	Anodes Deposits Electric fields Electrodeposition Lithium Lithium deposits Lithium-ion batteries Solid electrolytesCycling performance Dendritic growth Electric field force Electrochemical performance Electromagnetic environments Lithium metal anode Perpendicular magnetic fields Solid electrolyte interphase
收录类别	EI ; SCIE ; SCI
语种	英语
资助项目	ShanghaiTech University[] ; National Natural Science Foundation of China[21805185]
出版者	Elsevier B.V.
EI入藏号	20195007810118
EI主题词	Anodes ; Deposits ; Electric fields ; Electrodeposition ; Lithium ; Lithium deposits ; Lithium-ion batteries ; Solid electrolytes
EI分类号	Light Metal Mines:504.1 ; Electroplating:539.3.1 ; Lithium and Alloys:542.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803
原始文献类型	Journal article (JA)
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104878
专题	物质科学与技术学院_硕士生物质科学与技术学院_PI研究组_刘巍组物质科学与技术学院_本科生物质科学与技术学院_博士生
通讯作者	Liu, Wei
作者单位	School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Huang, Yuanqi,Wu, Xinsheng,Nie, Lu,et al. Mechanism of lithium electrodeposition in a magnetic field[J]. SOLID STATE IONICS,2020,345.
APA	Huang, Yuanqi.,Wu, Xinsheng.,Nie, Lu.,Chen, Shaojie.,Sun, Zhetao.,...&Liu, Wei.(2020).Mechanism of lithium electrodeposition in a magnetic field.SOLID STATE IONICS,345.
MLA	Huang, Yuanqi,et al."Mechanism of lithium electrodeposition in a magnetic field".SOLID STATE IONICS 345(2020).