发明名称 |
The manufacturing method of active materials for the positive electrode in alkaline storage batteries |
摘要 |
The present invention relates to a process for producing positive electrode active material in which an aqueous nickel salt solution, aqueous solutions of different kinds of metals, an aqueous solution containing ammonium ions and an aqueous alkali solution are fed each independently and simultaneously into a reaction vessel such that the amount of alkali metal is 1.9-2.3 moles relative to 1 mole of the total amount of nickel and different kinds of metals and the amount of ammonium ions is 2 moles or more relative to 1 mole of the total amount of nickel and different kinds of metals, the pH in the vessel is 11-13, the temperature in the vessel is 30-60° C and the average residence time is 20-50 hours. Further, in the process step of continuously growing the complex metal oxide particles from the salts of a plurality of metal elements through a plurality of successive reaction-deposition stages, the compositions and/or the kinds of the salts of metal element groups used for forming the oxide in the reaction-deposition stages adjacent to each other are made to be different from each other. |
申请公布号 |
EP1890350(A3) |
申请公布日期 |
2008.05.28 |
申请号 |
EP20070022225 |
申请日期 |
1998.02.02 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SAKAMOTO, HIROYUKI;IZUMI, HIDEKATSU;KIMIYA, HIROKAZU;IZUMI, YOICHI;MATSUMOTO, ISAO |
分类号 |
H01M4/52 |
主分类号 |
H01M4/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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