Active material powder for non-sintered nickel electrode and non

Details Active material powder for non-sintered nickel electrode and non Active material powder for non-sintered nickel electrode and non

1995-08-04

1997-08-26

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

2521821, H01M 432

Patent

active

056609523

ABSTRACT:
An non-sintered nickel electrode of alkaline batteries uses an active material powder which comprises composite particles comprising nickel hydroxide particles or solid solution particles consisting essentially of nickel hydroxide the surface of which is covered with a mixed crystal of cobalt hydroxide and the hydroxide of at least one metal (M) selected from the group consisting of aluminum, magnesium, indium and zinc. With this electrode, the cobalt hydroxide, which covers as a component of the mixed crystal the surface of the nickel hydroxide particles, minimally diffuses into them. Alkaline batteries using this electrode as positive electrode can therefore maintain, for a long period of time of charge-discharge cycles, the function of the cobalt hydroxide of increasing the conductivity of the electrode, thereby suppressing decrease in the discharge capacity in the course of charge-discharge cycles.

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patent: 5506076 (1996-04-01), Miyamoto et al.
patent: 5523182 (1996-06-01), Ovshinsky et al.
patent: 5549992 (1996-08-01), Iwane et al.

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