Title:
NICKEL ELECTRODE FOR ALKALINE STORAGE BATTERY
Document Type and Number:
Japanese Patent JP3204275
Kind Code:
B2
Abstract:
PURPOSE: To provide a high capacity nickel electrode with less electrode swelling by forming a solid solution added layer of group II element on nickel hydroxide powder surface, and using this as an active material.
CONSTITUTION: A determined quantity of cobalt sulfate or boron is dissolved in nickel sulfate at a temperature of 40-60°C to form an aqueous solution. A sodium hydroxide aqueous solution is added dropwise thereto, and pH is regularly kept at 11-14 while stirring to precipitate cobalt or boron-contained nickel hydroxide having a small pore capacity. Thereafter, this is added to an aqueous solution in which zinc sulfate and cadmium sulfate are dissolved in nickel sulfate in a determined ratio. The same operation is conducted to provide nickel hydroxide powder having a solid solution added layer of zinc, cadmium or magnesium on the particle surface. The formation of γ-NiCOOH on the electrode surface is suppressed by this coat, and a nickel electrode having no battery swelling and good charge efficiency at high temperature can be provided.
Inventors:
Sumiko Mukai
Masaharu Watada
Masahiko Oshiya
Masaharu Watada
Masahiko Oshiya
Application Number:
JP19293292A
Publication Date:
September 04, 2001
Filing Date:
June 25, 1992
Export Citation:
Assignee:
Yuasa Corporation
International Classes:
H01M4/32; H01M4/52; (IPC1-7): H01M4/52; H01M4/32
Domestic Patent References:
| JP3274666A | ||||
| JP230061A | ||||
| JP2109261A | ||||
| JP4894839A | ||||
| JP4919320A | ||||
| JP378965A | ||||
| JP239063B2 |