Zinc electrode for alkaline batteries

Details Zinc electrode for alkaline batteries Zinc electrode for alkaline batteries

1990-07-16

1992-06-16

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

427123, 2521821, H01M 442

Patent

active

051223759

ABSTRACT:
A negative zinc electrode for use in an alkaline battery has an active material consisting of zinc-magnesium alloy containing magnesium in an amount in the range of greater than 0% to about 15% by weight. The zinc-magnesium alloy may also contain a small amount of an additive metal that reduces the hydrogen overvoltage or an effective amount of an additive metal that increases the porosity, such as from 5 to 25% aluminum by weight of the zinc. The zinc-magnesium alloy is applied in particulate form to a suitable current collector using any one of a number of conventional methods such as die-pressing, mixing with a filler or a polymer and heating, sintering or compaction. The electrode has a cycle life longer than that of a conventional zinc oxide-based electrode, and causes little or no formation of dendrites.

REFERENCES:
patent: 4812374 (1989-03-01), Kagawa et al.
patent: 4861688 (1989-08-01), Miura et al.
patent: 4994333 (1991-02-01), Jose et al.
Miura, Patent Abstracts of Japan, for Kokai No. 63-178451, Jul. 1988.
Hikosaka, Patent Abstracts of Japan for Kokai No. 63-304571, Dec. 1988.

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