文献类型：期刊文献

英文题名：Shakedown, ratcheting and fatigue analysis of cathode coating in lithium-ion battery under steady charging-discharging process

作者：Chen, Ying[1];Chen, Haofeng[1,2];Luan, Weiling[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety DOE, Shanghai 200237, Peoples R China;[2]Univ Strathclyde, Dept Mech & Aerosp Engn, Glasgow G1 1XJ, Lanark, Scotland

年份：2021

卷号：150

外文期刊名：JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS

收录：;EI(收录号：20210909988639);WOS:【SCI-EXPANDED(收录号:WOS:000645422300003)】；

基金：The authors gratefully acknowledge the supports from the China Scholarship Council, Shanghai Automobile Industry Science and Technology Development Foundation (1801), National Natural Science Foundation of China (51828501), the Higher Education Discipline Innovation Project (111 Project) under the funding code B13020, University of Strathclyde and East China University of Science and Technology during the course of this work.

语种：英文

外文关键词：Lithium-ion battery; Electrode; Diffusion-induced stress; Shakedown; Ratcheting; Fatigue

摘要：The cyclic plasticity behaviour and failure mechanism of the cathode material in lithium-ion batteries urgently need to be understood due to the cyclic lithium-ion diffusion-induced stress during charging-discharging process. Many researches have focused on the shakedown and ratcheting responses of lithium-ion battery anode. However, the systematic investigation on the plasticity behaviour of lithium-ion battery cathode is still lacking. In this paper, the cyclic plasticity behaviour of LiNixMnyCozO2 electrode subjected to cyclic lithiation/delithiation under a constant mechanical load is investigated comprehensively. The shakedown, ratcheting and fatigue analyses of active layer are conducted using direct numerical techniques based on the Linear Matching Method framework, while coin cell electrochemical experiments are performed simultaneously to support the analysis. The effect of thickness of coating on the shakedown and ratcheting response is investigated, and the thickness is confirmed as a crucial parameter that can influence the battery performance. The strain-fatigue life curve is also obtained to effectively predict the life of active coating. Moreover, the numerical results reveal the existence of low cycle fatigue at the centre, and ratcheting mechanism on the edge of the cathode, which is consistent well with the experimental result.