发明授权
- 专利标题： Positive active material for use in sealed alkaline storage batteries
- 专利标题（中）： 用于密封碱性蓄电池的正极活性物质
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申请号： US09410298申请日： 1999-09-30
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公开(公告)号： US06576368B1公开(公告)日： 2003-06-10
- 发明人: Takeshi Ogasawara , Nobuyuki Higashiyama , Mutsumi Yano , Mamoru Kimoto , Yasuhiko Itoh , Koji Nishio
- 申请人： Takeshi Ogasawara , Nobuyuki Higashiyama , Mutsumi Yano , Mamoru Kimoto , Yasuhiko Itoh , Koji Nishio
- 优先权： JP10-281081 19981002
- 主分类号： H01M432
- IPC分类号： H01M432
摘要：
A positive active material for sealed alkaline storage batteries is obtainable by subjecting &bgr;-nickel hydroxide, together with at least one additive selected from yttrium, gadolinium, erbium and ytterbium, and oxides, hydroxides, fluorides and chlorides thereof, to an oxidation treatment with an oxidizing agent in an aqueous alkaline solution. The positive active material contains nickel with a valence number in a range from 2.1 to 3.4.