发明申请
- 专利标题: Method for producing positive plate material for lithium secondary cell
- 专利标题(中): 锂二次电池正极材料的制造方法
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申请号: US10521370申请日: 2003-02-25
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公开(公告)号: US20050265909A1公开(公告)日: 2005-12-01
- 发明人: Yoshio Kajiya , Hiroshi Tasaki
- 申请人: Yoshio Kajiya , Hiroshi Tasaki
- 优先权: JP2002-214450 20020723
- 国际申请: PCT/JP03/02027 WO 20030225
- 主分类号: H01M10/05
- IPC分类号: H01M10/05 ; C01G45/00 ; C01G51/00 ; C01G53/00 ; H01M4/36 ; H01M4/485 ; H01M4/505 ; H01M4/525
摘要:
A positive plate material for lithium secondary cells stably exhibiting excellent performance including the cell initial capacity, cycle characteristics, and the safety. The material is produced by dripping an aqueous solution of a salt (e.g., cobalt sulfate) of a doping element (e.g., a transition metal, an alkaline metal, an alkaline-earth metal, B, or Al) into an alkaline solution, a carbonate solution, or a hydrogencarbonate solution in any one of which a compound (e.g., manganese oxide) of a metal (Mn, Co, Ni, or the like) which is the major component of the positive plate material so as to precipitate the compound of the doping element on the major component compound and to cover the major component compound, mixing the major component compound covered with the doping element with a lithium compound (e.g., lithium carbonate), and firing the mixture.