电池2016，Vol.46Issue(6)：335-338,4.
镍钴锰酸锂的制备及高电压充放电性能
Preparation and high voltage charge-discharge performance of lithium nickel cobalt manganate
庞佩佩 1王正 1宋晓娜 1邓耀明1
作者信息
- 1. 东莞市迈科新能源有限公司,广东东莞523770
- 折叠
摘要
Abstract
Lithium nickel cobalt manganate materials coated with nano size aluminum oxide (Al2O3)were prepared by a coprecipitation-ball milling-high temperature sintering method,the electrochemical performance was studied under high voltage charge and discharge conditions.The results of XRD,SEM,differential capacity(dQ)/differential voltage(dU) and electrochemical performance tests indicated that the lithium nickel cobalt manganate uniformly coated with nano size Al2O3 could be obtained via this method,the electrochemical performance of the cathode was improved.When cycled in 3.0 ～ 4.6 V with 0.5 C,the specific discharge capacity of cathode coated with 0.5 ％ Al2O3 in the 50th cycle was increased to 172.7 mAh/g from 155.3mAh/g of the uncoated material.The thermal stability of cathode and the constant charge time at high temperature and high voltage were increased via coating treatment,thereby the safety of batteries at high temperature could be improved.关键词
正极材料/包覆/高电压/三氧化二铝(Al2O3)/锂离子电池Key words
cathode material/coating/high voltage/aluminum oxide(Al2O3)/Li-ion battery分类
信息技术与安全科学引用本文复制引用
庞佩佩,王正,宋晓娜,邓耀明..镍钴锰酸锂的制备及高电压充放电性能[J].电池,2016,46(6):335-338,4.
