Analysis of delamination in thin film electrodes under galvanostatic and potentiostatic operations with Li-ion diffusion from edge

被引：0
作者：
Bo Lu
Yi-Cheng Song
Zhan-Sheng Guo
Jun-Qian Zhang
机构：
[1] Shanghai University,Shanghai Institute of Applied Mathematics and Mechanics
[2] Shanghai University,Department of Mechanics
[3] Shanghai University,Shanghai Key Laboratory of Mechanics in Energy Engineering
来源：
Acta Mechanica Sinica | 2013年 / 29卷
关键词：
Lithium-ion battery; Thin film electrode; Delamination; Diffusion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Progressive delamination driven by Li-ion diffusion in elastic disk-like thin film electrodes of Li-ion batteries is modeled based on the cohesive model. Axisymmetric diffusion model is considered under both galvanostatic and potentiostatic operations. The effect of edge diffusion on the delamination process is evaluated. It is found that the diffusion from edge leads to an earlier delamination initiation. The edge effect is significant for active disks with a small aspect ratio, but negligible for the case of large aspect ratio. The edge diffusion is weaker in the potentiostatic operation than in the galvanostatic operation.
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页码：348 / 356
页数：8
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