Alkali secondary battery

Details Alkali secondary battery Alkali secondary battery

1995-11-13

1998-01-13

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429232, H01M 452

Patent

active

057077649

ABSTRACT:
This invention discloses an alkali secondary battery which includes a cadmium-free positive electrode whose swelling ratio is decreased, and in which the cycle characteristic is improved and the charge efficiency in use at high temperatures is also improved. This alkali secondary battery includes a positive electrode accommodated in a case and having a structure in which a paste containing nickel hydroxide grains, a conductor, and a binder is filled in a metal porous body, a negative electrode accommodated in the case and so arranged as to oppose the positive electrode with a separator sandwiched between them, and an alkali electrolyte contained in the case. The nickel hydroxide grains contained in the positive electrode have a structure in which cobalt and at least one transition metal selected from the group consisting of copper, bismuth, chromium, gallium, indium, lanthanum, scandium, and yttrium are coprecipitated with metal nickel at a ratio of 1.5 to 11.0 wt % with respect to nickel hydroxide.

REFERENCES:
patent: 4935318 (1990-06-01), Ikoma et al.
patent: 4985318 (1991-01-01), Oshitami et al.
patent: 5219628 (1993-06-01), Hasebe et al.
patent: 5344728 (1994-09-01), Ovshinsky et al.
Japanese Kokaii 57-157464, Sep. 29, 1982, Pressed Niubel Electrode for Storage Battery: Shiyougo Suzuki, Apr. 1952.

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