Characterization and quantification of multi-field coupling in lithium-ion batteries under mechanical constraints

作     者：Xue Cai Caiping Zhang Zeping Chen Linjing Zhang Dirk Uwe Sauer Weihan Li 

作者机构：National Active Distribution Network Technology Research CenterBeijing Jiaotong UniversityBeijing 100044China Chair for Electrochemical Energy Conversion and Storage SystemsInstitute for Power Electronics and Electrical Drives(ISEA)RWTH Aachen UniversityCampus Boulevard 8952074 AachenGermany Center for AgeingReliability and Lifetime Prediction of Electrochemical and Power Electronic Systems(CARL)Campus-Boulevard 8952074 AachenGermany Juelich Aachen Research AllianceJARA-EnergyAachenGermany Helmholtz Institute Münster(HI MS)IEK-12Forschungszentrum JülichGermany 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第95卷第8期

页      面：364-379,I0009页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

基　　金：supported by the National Science Fund for Excellent Youth Scholars of China(52222708) the National Natural Science Foundation of China(51977007) 

主　　题：Lithium-ion battery Muti-field coupling Mechanical constraints Interaction mechanisms Quantitative analysis 

摘      要：The safety and durability of lithium-ion batteries under mechanical constraints depend significantly on electrochemical,thermal,and mechanical fields in *** and quantifying the multi-field coupling behaviors requires interdisciplinary ***,we design experiments under mechanical constraints and introduce an in-situ analytical framework to clarify the complex interaction mechanisms and coupling degrees among multi-physics *** proposed analytical framework integrates the parameterization of equivalent models,in-situ mechanical analysis,and quantitative assessment of coupling *** results indicate that the significant impact of pressure on impedance at low temperatures results from the diffusion-controlled step,enhancing kinetics when external pressure,like 180 to 240 k Pa at 10℃,is *** diversity in control steps for the electrochemical reaction accounts for the varying impact of pressure on battery performance across different *** thermal expansion rate suggests that the swelling force varies by less than 1.60%per unit of elevated temperature during the lithiation *** introducing a composite metric,we quantify the coupling correlation and intensity between characteristic parameters and physical fields,uncovering the highest coupling degree in electrochemical-thermal *** results underscore the potential of analytical approaches in revealing the mechanisms of interaction among multi-fields,with the goal of enhancing battery performance and advancing battery management.