Title:
MANUFACTURE OF UNSINTERED CADMIUM NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERY
Document Type and Number:
Japanese Patent JP3631039
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of an unsintered cadmium negative electrode for an alkaline storage battery by holding an active material mainly made of a cadmium oxide on a conductive substrate to form an electrode plate, hydrating the cadmium oxide of the electrode plate, and generating fine crystals of a β-type potassium hydroxide via a hydrating process.
SOLUTION: The hydrating process of the cadmium oxide of an electrode plate is conducted in a hydrated solution added with a phosphate and/or a silicate to a potassium hydroxide aqueous solution with the specific gravity of 1.25 or below at 25°C. The temperature of the hydrated solution is preferably set to 30°C or below, and the concentration of the phosphate and/or the silicate in the hydration solution is preferably set to 0.1-1.0 mol/l.
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Inventors:
Kenji Fujii
Akira Hirakawa
Tetsuya Kikuchi
Akira Hirakawa
Tetsuya Kikuchi
Application Number:
JP8537399A
Publication Date:
March 23, 2005
Filing Date:
March 29, 1999
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M4/44; H01M4/26; (IPC1-7): H01M4/26; H01M4/44
Domestic Patent References:
| JP1281668A | ||||
| JP2139856A |
Attorney, Agent or Firm:
Toshiyuki Maruyama
Takao Miyano
Koichi Kitazumi
Takao Miyano
Koichi Kitazumi
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