高镍三元正极材料镍钴铝酸锂的改性方法  

Modification strategies of nickel rich ternary cathode materials nickel-cobalt lithium aluminate

作　　者：周心安 傅小兰 王超[1] 王博 赵冬妮[1] 张飞龙[1] 李世友[1] ZHOU Xin'an;FU Xiaolan;WANG Chao;WANG Bo;ZHAO Dongni;ZHANG Feilong;LI Shiyou(College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China)

机构地区：[1]兰州理工大学石油化工学院,兰州730050

出　　处：《功能材料》2021年第1期1064-1069,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21766017,51962019)。

摘　　要：高镍三元正极材料镍钴铝酸锂(NCA)因具有较高的能量密度和较低的成本,而拥有广阔的应用前景,但也存在阳离子混排严重、易发生结构相变和安全性能不佳等问题。为了解决这些问题,近年来对NCA材料进行了大量的改性研究。综述了NCA材料表面包覆、体相掺杂、梯度化和单晶化等最新改性方法,并对其研究方向进行了展望。The high-nickel ternary nickel-cobalt lithium aluminate cathode material(NCA)has a broad application prospect due to its high energy density and low cost,but also owns problems such as severe cation mixing,easy structural phase change and poor safety performance.In order to solve these problems,a lot of modification studies have been carried out on NCA materials in recent years.The recent modification strategies of surface coating,bulk doping,gradient and single crystal for NCA materials are reviewed.The research direction of NCA is prospected as well.

关 键 词：锂离子电池 高能量密度 正极材料 镍钴铝酸锂 改性方法 

分 类 号：TM912.9[电气工程—电力电子与电力传动]