锂离子电池石墨负极材料衰减机理研究  

Research on the Degradation Mechanism of Negative Materials for Lithium-Ion Battery

作　　者：殷志刚 王静 曹敏花[2] YIN Zhi-gang;WANG Jing;CAO Min-hua(Beijing Idrive Automotive Co.,Ltd.,Beijing 102202,China;Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京智行鸿远汽车有限公司,北京102202 [2]北京理工大学,北京100081

出　　处：《新能源进展》2021年第2期158-168,共11页Advances in New and Renewable Energy

基　　金：国家自然科学基金面上项目(21872008)。

摘　　要：石墨负极材料因具有比容量高、价格低廉以及环境友好等特性在锂电池领域得到广泛的应用。但材料在循环过程中也显露出缺陷,如在循环过程中体积不断变化导致微裂纹、石墨化度降低、接触损失、SEI膜变化、金属锂析出、不均匀性等缺点导致其在锂电池的循环中容量衰减。本文对负极材料循环过程中容量衰减有关机理进行总结,并提出各种衰减机理的简要解决方法。Graphite anode materials have been widely used in the field of lithium batteries because of their high specific capacity,low price and environmental friendliness.However,the material also exhibits some defects during the charge-discharge process,such as microcracks,graphitization degree reduction,contact loss,solid electrolyte interphase film change,lithium metal precipitation,inhomogeneity and other defects,which cause the capacity degradation of lithium-ion battery.In this paper,the mechanism of capacity decay in the cycle of anode materials was summarized,and the solutions of various degradation mechanisms were given briefly.

关 键 词：锂离子电池 石墨负极材料 衰减机理 

分 类 号：TK02[动力工程及工程热物理] TM912[电气工程—电力电子与电力传动]