Diffusion–reaction–induced stress in moving boundary cylindrical Li-ion battery electrodes

Presenter Information

Tao Zhang, Shanghai University, ChinaFollow
Zhan-Sheng Guo, Shanghai University, China
Jianyu Zhu, Shanghai University, China
Yuhui Wang, Shanghai University, China

Description

Lithium (Li) inserted into or extracted from the electrode in Li-ion battery causes stress which may cause fracture of the electrode. A moving boundary model in a cylindrical Li-ion battery electrode accounting for reversible electrochemical reaction is obtained. The volumetric change created by Li diffusion and formation of reversible reaction product would generate the diffusion–reaction-induced stress in the electrode. The constitutive relation among Li concentration, reaction product, and stress is derived, and the numerical solutions of the concentration, reaction product, and stress fields are obtained. The effects of phase transformation and reversible electrochemical reaction on Li diffusion and stress in a cylindrical Li-ion battery electrode are analyzed.

Recommended Citation

Zhang, T., Guo, Z., Zhu, J., & Wang, Y. (2014). Diffusion–reaction–induced stress in moving boundary cylindrical Li-ion battery electrodes. In A. Bajaj, P. Zavattieri, M. Koslowski, & T. Siegmund (Eds.). Proceedings of the Society of Engineering Science 51st Annual Technical Meeting, October 1-3, 2014 , West Lafayette: Purdue University Libraries Scholarly Publishing Services, 2014. https://docs.lib.purdue.edu/ses2014/mms/esm/10