变电站直流系统锂电池正极材料表面改性研究  

Surface modification of lithium battery cathode material for DC system of substation

作　　者：张剑飞 朱长荣 高解放 王伟 石永久 ZHANG Jian-fei;ZHU Chang-rong;GAO Jie-fang;WANG Wei;SHI Yong-jiu(Tangshan Power Supply Company,State Grid Jibei Electric Power Co.,Ltd.,Tangshan Hebei 063000,China)

机构地区：[1]国网冀北电力有限公司唐山供电公司,河北唐山063000

出　　处：《电源技术》2018年第9期1395-1397,共3页Chinese Journal of Power Sources

摘　　要：表面改性对电池正极材料LiMn_2O_4的性能改善有重要的作用,是目前解决LiMn_2O_4高温下与循环中的容量衰减问题的较好方法。LiMn_2O_4大电流充放电性能、高温循环和储存性能的优化备受关注,但不同改性方法及物质的效果不同。综述了变电站直流系统锂电池正极材料LiMn_2O_4表面物理改性的最新研究成果,对常用的表面改性材料及其作用机理进行了总结,最后指出了LiMn_2O_4表面物理改性进一步发展的方向。Surface modification has an important role in improving the performance of LiMn2O4 cathode material.It is a better method to solve the problem of capacity degradation of LiMn2O4 under high temperature and cycle at present.LiMn2O4 high current charging and discharging performance,high temperature cycling and storage performance optimization has attracted much attention.However,the effects are different because of different methods and materials.This paper reviewed the latest research results of substation DC system of lithium ion battery cathode material LiMn2O4 surface physical modification,used for surface modification of materials and its mechanism were summarized,finally pointed out that the LiMn2O4 surface physical modification of the direction of further development.

关 键 词：锂离子电池 LIMN2O4 变电站直流系统 正极材料 

分 类 号：TM912.9[电气工程—电力电子与电力传动]