Active material for negative poles of alkaline dry cells, and me

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

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420513, H01M 442

Patent

active

045929742

ABSTRACT:
Novel active materials for negative poles in alkaline dry cells, and method of preparing the same are disclosed. Said materials and method do not employ harmful Hg. In place of Hg, an alloy containing at least three elements selected from Bi, Pb, In, Cd, and Ga is used to have a zinc dust alloyed at its outer surfaces with said alloy elements which are afforded with a high hydrogen overvoltage effective to retard the generation of hydrogen due to self erosion of the zinc dust in an alkaline solution of the dry cells.

REFERENCES:
patent: 4084047 (1978-04-01), Himy et al.
patent: 4224391 (1980-09-01), Eisenberg
patent: 4327157 (1982-04-01), Himy et al.
patent: 4328297 (1982-05-01), Bilhorn
patent: 4473625 (1984-09-01), Watakabe et al.
Himy, Substitutes for Mercury in Alkaline Zinc Batteries II, Proceedings-Power Sources Symposium, vol. 28, 1978.

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