Prelithiation design for suppressing delamination in lithium-ion battery electrodes  

作　　者：Yifei QIAN Bo LU Yinhua BAO Yanfei ZHAO Yicheng SONG Junqian ZHANG 

机构地区：[1]Department of Mechanics,Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China [2]Shanghai Key Laboratory of Mechanics in Energy Engineering,Shanghai University,Shanghai 200444,China [3]Department of Civil Engineering,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2021年第12期1703-1716,共14页应用数学和力学（英文版）

基　　金：the National Natural Science Foundation of China(Nos.12072183,11872236 and 12172205)。

摘　　要：Prelithiation has been intensively investigated in high-capacity lithiumion batteries(LIBs).However,the optimization of prelithiation degrees for long service life of LIBs still remains a challenge.The positive effect of prelithiation on suppressing degradation of LIBs,besides directly pursuing the high first Coulomb efficiency which has been widely reported in the literature,is revealed and discussed based on an analytical model focusing on the interfacial delamination in electrodes.For full charge-discharge cycling,well-designed prelithiation can effectively suppress the delamination and reduce the debonding size by approximately 25%,compared with the case without prelithiation.For the strategy combining partial charge-discharge cycling and prelithiation,the largest reversible capacity without debonding can be significantly improved by approximately100%with well-designed prelithiation.This work is expected to provide a prelithiation design principle and further improve the mechanical stability of LIB electrodes.

关 键 词：prelithiation DELAMINATION ELECTRODE concentration-dependent property analytical solution 

分 类 号：TM912[电气工程—电力电子与电力传动]