发明公开
- 专利标题： SEALED NICKEL-ZINC PRIMARY CELL
- 专利标题（中）： DICHTE NICKEL / ZINK-PRIMÄRZELLE
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申请号： EP03733138.6申请日： 2003-05-28
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公开(公告)号： EP1519434A1公开(公告)日： 2005-03-30
- 发明人: MIYAMOTO, Kunihiko , IRIE, Shuichiro 907, 21-1, Miyamoto-cho 1-chome , KASHIWAZAKI, Eiki 147-2-202, Oaza Hitomi , OKAYAMA, Teiji
- 申请人： Toshiba Battery Co., Ltd.
- 申请人地址： 4-10, Minamishinagawa 3-chome Shinagawa-ku Tokyo 140-0004 JP
- 专利权人： Toshiba Battery Co., Ltd.
- 当前专利权人： Toshiba Battery Co., Ltd.
- 当前专利权人地址： 4-10, Minamishinagawa 3-chome Shinagawa-ku Tokyo 140-0004 JP
- 代理机构： HOFFMANN EITLE
- 优先权： JP2002159393 20020531
- 国际公布： WO2003103080 20031211
- 主分类号： H01M6/08
- IPC分类号： H01M6/08 ; H01M4/06 ; H01M4/52
摘要：
The object of the invention is to provide an alkali primary battery being excellent in high rate discharge characteristics with less increase of the inner pressure by generating hydrogen in the overdischarge process.
The invention provides a sealed nickel zinc primary battery comprising at least a positive electrode having a higher oxide of nickel as a positive electrode active substance, a negative electrode having zinc or an alloy thereof as a negative electrode active substance, a separator and an electrolyte solution housed in a vessel, wherein manganese dioxide is added in a proportion of 3 to 7% by mass relative to the higher oxide of nickel in the positive electrode, and the ratio between the theoretical capacity of the negative electrode to the theoretical capacity of the positive electrode (the theoretical capacity of the negative electrode/theoretical capacity of the positive electrode) is in the range of 1.2 to 1.0.
The invention provides a sealed nickel zinc primary battery comprising at least a positive electrode having a higher oxide of nickel as a positive electrode active substance, a negative electrode having zinc or an alloy thereof as a negative electrode active substance, a separator and an electrolyte solution housed in a vessel, wherein manganese dioxide is added in a proportion of 3 to 7% by mass relative to the higher oxide of nickel in the positive electrode, and the ratio between the theoretical capacity of the negative electrode to the theoretical capacity of the positive electrode (the theoretical capacity of the negative electrode/theoretical capacity of the positive electrode) is in the range of 1.2 to 1.0.
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