Composition for a zinc electrode

Details Composition for a zinc electrode Composition for a zinc electrode

1975-05-21

1977-04-12

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

H01M 3502

Patent

active

040176657

ABSTRACT:
An improved active electrode composition for a zinc electrode of an electrochemical accumulator is provided with an ingredient that inhibits the passage of zinc into the alkaline electrolyte of the accumulator during the discharge process. The ingredient is preferably an alkaline fluoride, which during discharge forms with the zinc a compound which is only slightly soluble, if at all, in the electrolyte. The resulting prevention of the reversible movement of zinc into and out of the solution is effective to prevent an undesired shifting of active material on the collector of the electrode, and generally to increase its life.

REFERENCES:
patent: 2738375 (1956-03-01), Schlotter
patent: 3592693 (1971-07-01), Rosansky
patent: 3645793 (1972-02-01), Hein et al.
patent: 3713891 (1973-01-01), Curelop et al.

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