高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (S1): 9.

• 研究论文 • 上一篇    下一篇

锂离子电池正极材料LiCoO2的制备新方法

魏进平, 邓斌, 阎杰, 周震, 宋德瑛   

  1. 南开大学新能源材料化学研究所, 天津 300071
  • 收稿日期:2001-06-29 出版日期:2001-12-31 发布日期:2001-12-31
  • 通讯作者: 阎杰(1941年出生),男,教授,博士生导师,从事能源材料化学研究.Tel:022-23503623(O).

A New Technique for Preparation of the Cathode Material of Lithium-ion Battery

WEI Jin-Ping, DENG Bin, YAN Jie, ZHOU Zhen, SONG De-Ying   

  1. Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China
  • Received:2001-06-29 Online:2001-12-31 Published:2001-12-31

摘要:

利用电解金属钴制得Co(OH)2-2xRx(其中R为有机酸和无机酸根离子)中间产物,然后根据钴含量与LiOH·H2O)固相反应制得了LiCoO2.通过X光衍射,扫描电镜以及激光粒度测试表明,所得的锂离子正极材料LiCoO2结构纯正,粒度分布集中,比表面积较大:对其进行充放电实验表明,放电容量比较高,首次放电容量达到146mAh/g,循环10次后容量仍保持在142mAh/g.该法可大大降低制备LiCoO2的生产成本,具有十分广阔的应用前景.

关键词: 锂离子电池, 正极材料, LiCoO2

Abstract:

The cathode material LiCoO2 of lithium-ion batteries can be obtained from the reaction of LiOH·H2O and Co(OH)2-2xRx(R is the inorganic or organic acid radicals), which is the midst product of the electrolysis of the metal cobalt in a given electrolyte. The achieved cathode material LiCoO2 for lithium-ion batteries has a single phase and its granularity distribution relatively concentrates through the experiments of XRD. SEM and Laser Granularity Testing, The discharge capacity is relatively high which reaches 146mAh/g at the first time of discharging and still maintains 142mAh/g after 10 cycles of charge/discharge experiments. The cost for the preparation of the cathode material LiCoO2 can greatly be decreased through this technique, which has a well-promising application future.

Key words: Lithium-ion battery, Cathode material, LiCoO2

中图分类号: 

TrendMD: