文献类型：期刊文献

中文题名：热处理温度对Al_2O_3表面修饰LiNi_(0.9)Co_(0.1)O_2正极材料电化学性能的影响

英文题名：Effects of Heat Treatment Temperature on Electrochemical Properties of Cathode Material LiNi_(0.9)Co_(0.1)O_2with Surface Modified by Al_2O_3

作者：李伟伟[1]

第一作者：李伟伟

机构：[1]新乡学院化学化工学院

第一机构：新乡学院化学化工学院

年份：2018

卷号：38

期号：2

起止页码：128-130

中文期刊名：矿冶工程

外文期刊名：Mining and Metallurgical Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD_E2017_2018】；

语种：中文

中文关键词：正极材料;表面修饰;热处理;氧化铝;锂离子电池;电化学性质

外文关键词：cathode material;surface modification;heat treatme nt;aluminium oxide;lithium - ion battery;electrochemical property

摘要：在水溶液体系中,制备了1%Al_2O_3修饰的镍基正极材料Li Ni_(0.9)Co_(0.1)O_2,并研究了热处理温度对正极材料性能的影响。结果表明,1%Al_2O_3修饰后没有改变正极材料的结构和形貌,650℃热处理后正极材料具有最佳的电化学性能,首次放电容量为178.4 m Ah/g,库伦效率为82.4%,0.5C倍率50次循环后的容量保持率为88.1%。
The Ni-based cathode material Li Ni0.9Co0.1O2modified with 1%Al2O3was prepared in aqueous solution.The influence of heat treatment temperature on performances of the material was investigated as well.Results showed that the structure and morphology of the cathode material were not changed after surface modification with 1%Al2O3.The optimum electrochemical performance was obtained after heat treatment at 650℃,that is,an initial discharge capacity of 178.4 m Ah/g,coulombic efficiency of 82.4%and capacity retention of 88.1%after 50 cycles at 0.5C.