Electrolyte inhomogeneity induced lithium plating in fast charging lithium-ion batteries

作     者：Yi Yang Lei Xu Shi-Jie Yang Chong Yan Jia-Qi Huang Yi Yang;Lei Xu;Shi-Jie Yang;Chong Yan;Jia-Qi Huang

作者机构：School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary ScienceBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Shanxi Research Institute for Clean EnergyTsinghua UniversityTaiyuan 030032ShanxiChina 

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

年 卷 期：2022年第31卷第10期

页      面：394-399,I0010页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080503[工学-材料加工工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the Beijing Natural Science Foundation (JQ20004) the National Key Research and Development Program (2021YFB2400300) the National Natural Science Foundation of China (22109083) the Scientific and Technological Key Project of Shanxi Province (20191102003) 

主　　题：Fast charging Lithium-ion batteries Lithium plating Distribution of electrolyte Inhomogeneity 

摘      要：Fast charging capability of lithium-ion batteries is in urgent need for widespread economic success of electric vehicles. However, the application of the fast charging technology often leads to the inevitable lithium plating on the graphite anode, which is one of the main culprits that endanger battery safety and shorten battery lifespan. The in-depth understanding of the initiation of lithium metal nucleation and the following plating behavior is a key to the development of fast charging cells. Herein, we investigate the overlooked effect of the non-uniform distribution of electrolyte on lithium plating during fast charging. Prior lithium plating occurs on the saturated lithium-graphite compounds in the anode region with sufficient electrolyte since the lithium-ion transport is blocked in the anode region lacking electrolyte. The uniform distribution of electrolyte is crucial for the construction of safe lithium-ion batteries especially in fast charging scenarios.