发明授权
- 专利标题: Non-sintered nickel electrode for alkaline storage battery, alkaline storage battery including the same, and method for production of non-sintered nickel electrode for alkaline storage battery
- 专利标题(中): 碱性蓄电池用非烧结镍电极,含碱蓄电池的碱性蓄电池及碱性蓄电池用非烧结镍电极的制造方法
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申请号: US881146申请日: 1997-06-24
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公开(公告)号: US6007946A公开(公告)日: 1999-12-28
- 发明人: Mutsumi Yano , Mitsuzo Nogami , Katsuhiko Shinyama , Kousuke Satoguchi , Mitsunori Tokuda , Ikuo Yonezu , Koji Nishio , Masao Inoue , Shin Fujitani
- 申请人: Mutsumi Yano , Mitsuzo Nogami , Katsuhiko Shinyama , Kousuke Satoguchi , Mitsunori Tokuda , Ikuo Yonezu , Koji Nishio , Masao Inoue , Shin Fujitani
- 申请人地址: JPX Osaka
- 专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX8-186586 19960626; JPX9-054016 19970221
- 主分类号: H01M4/32
- IPC分类号: H01M4/32 ; H01M4/52 ; H01M4/24 ; H01M4/26
摘要:
In the non-sintered nickel electrode for an alkaline storage battery according to the invention, a yttrium metal powder and/or a yttrium compound powder has been added to a particulate active material comprising composite particles each consisting of a nickel hydroxide core and a sodium-doped cobalt compound shell. Because the yttrium metal powder and/or yttrium compound powder inhibits the diffusion of cobalt into the nickel hydroxide core, the non-sintered nickel electrode of the invention exhibits a high utilization efficiency not only in an initial phase of charge-discharge cycling but over a long time of use. Moreover, because the yttrium metal powder and/or yttrium compound powder enhances the oxygen overpotential, the non-sintered nickel electrode for an alkaline storage battery according to the invention shows very satisfactory charge characteristics particularly at high temperatures.
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