电迁移
电解质
枝晶(数学)
电极
锂(药物)
相(物质)
材料科学
热失控
各向异性
电场
短路
非线性系统
电池(电)
化学
化学物理
功率(物理)
热力学
复合材料
电压
电气工程
物理
物理化学
光学
量子力学
几何学
有机化学
数学
内分泌学
工程类
医学
作者
Hanxu Jing,Hui Xing,Xianglei Dong,Yongsheng Han
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2022-03-01
卷期号:169 (3): 032511-032511
被引量:2
标识
DOI:10.1149/1945-7111/ac5fed
摘要
Lithium batteries have been widely used, but the growth of lithium dendrites does lead to some hazards, such as internal short circuit, thermal runaway and even explosion. In paper, a nonlinear phase field model combined with Butler-Volmer expression was developed to study dendrite growth during electrodeposition. Two types of initial electrode-electrolyte interface are applied in numerical simulations. Results show that the cation concentration enrichment occurs near the dendritic tip due to the electromigration, and the curve of the growth velocity versus time follows a simple power law relation, indicating that the stability of the dendritic array originating from initial electrode-electrolyte interface can be broken with the applied electrical potential increasing. Moreover, we found that applied electric potential gradient can strongly influence the dendritic growth velocity and the dendritic growth during electrodeposition is less relative to the surface tension anisotropy.
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