高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 128.

• Chemistry in Energy Sciences • 上一篇    下一篇

Fabrication of LiCoO2 at Low Temperature for Battery Usage

ZHU Guang-Ming, WU Guo-Tao, YOU Jin-Kua, LIN Zu-Geng   

  1. Department of Chemistry, Xiamen University, Xiamen 361005
  • 出版日期:2000-12-31 发布日期:2000-12-31

Fabrication of LiCoO2 at Low Temperature for Battery Usage

ZHU Guang-Ming, WU Guo-Tao, YOU Jin-Kua, LIN Zu-Geng   

  1. Department of Chemistry, Xiamen University, Xiamen 361005
  • Online:2000-12-31 Published:2000-12-31

摘要:

Reaction of CoO2 with air resulted in its protonization to form CoOOH. In light of the intimate relationship between LiCoO2 and CoOOH, reaction by "soft chemistry" ion exchange was undertaken to fabricate LiCoO2 at low temperatures. By way of a reaction between CoOOH and LiOH-H2O in a highly basic environment, LiCoO2 with good crystallinity was formed at 100℃. This new method of fabrication results in a 700-800℃ decrease in fabrication temperature compared with traditional methods and in subsequent cost savings. Electrochemical behavior was initially hampered by insertion of carbonate species which could be removed thermally at moderate temperatures.

Abstract:

Reaction of CoO2 with air resulted in its protonization to form CoOOH. In light of the intimate relationship between LiCoO2 and CoOOH, reaction by "soft chemistry" ion exchange was undertaken to fabricate LiCoO2 at low temperatures. By way of a reaction between CoOOH and LiOH-H2O in a highly basic environment, LiCoO2 with good crystallinity was formed at 100℃. This new method of fabrication results in a 700-800℃ decrease in fabrication temperature compared with traditional methods and in subsequent cost savings. Electrochemical behavior was initially hampered by insertion of carbonate species which could be removed thermally at moderate temperatures.

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