Stress self-relaxation arising from diffusion-induced creep in bilayer lithium-ion battery electrode
Stress self-relaxation arising from diffusion-induced creep in bilayer lithium-ion battery electrode
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双层锂离子电池电极扩散诱导蠕变引起的应力自松弛
DOI:
10.1016/j.scriptamat.2018.03.023
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发表时间:
2018-06
影响因子:
6
通讯作者:
Zhao Xiang
中科院分区:
文献类型:
--
作者:
Lu Yongjun;Che Qi;Song Xu;Wang Fenghui;Zhao Xiang
In this paper, we study the role of creep deformation arising from electrochemical charging and discharging on the mechanical resilience of bilayer electrode. For this purpose, a new theoretical model incorporating Li diffusion, creep deformation, and induced stress is proposed. The results indicate that the diffusion-induced creep is an important mechanism for stress relaxation and capacity enhancement in Sn-based bilayer electrode. In addition, owing to the introduction of creep, the resultant stress should be dictated by the interplay between time scale associated with diffusion, applied flux and creep relaxations.
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