锂离子电池高镍三元层状正极材料研究进展  

Research progress of high-nickel ternary layered cathode materials for lithium-ion batteries

作　　者：罗亚婷 石哲 陆楚 马雯瑜 李海科 曹志杰 Luo Yating;Shi Zhe;Lu Chu;Ma Wenyu;Li Haike;Cao Zhijie(School of Physics,Ningxia University,Yinchuan 750021)

机构地区：[1]宁夏大学物理学院,银川750021

出　　处：《化工新型材料》2024年第S02期7-10,15,共5页New Chemical Materials

基　　金：国家自然科学基金面上项目(52271221);“西部之光”人才培养计划(XAB2022YW09)。

摘　　要：锂离子电池高镍三元正极材料因理论比容量高、成本低、结构稳定性好等优点而被广泛关注。然而,此类材料存在形成残留锂化合物、阳离子无序、电极表面重构、电解液副反应、晶内/晶间裂纹、热稳定性差等缺点,导致电池在使用过程中出现容量衰减快、循环性能差、安全性能低等问题,严重阻碍了实际应用。以高镍三元正极材料为对象,从结构分类、存在问题、改性方法等三方面进行了较为全面的综述,以期为今后的研究人员提供有益的参考。The high-nickel ternary cathode materials for lithium-ion batteries have attracted much attention due to their high theoretical specific capacity,low cost,and good structural stability.However,such materials have shortcomings such as the formation of residual lithium compounds,cation disorder,electrode surface reconstruction,electrolyte side reactions,intra/intergranular cracks,poor thermal stability,etc.,which lead to the rapid decay of charge and discharge capacity,poor cycling performance,and low safety,and seriously hinder their practical application.This article reviewed high-nickel ternary cathode material from three aspects,including structural classification,existing problems and modification methods,to provide a useful reference for future researches.

关 键 词：锂离子电池 正极材料 高镍三元层状氧化物 改性 

分 类 号：TM911[电气工程—电力电子与电力传动]