Current conductor for a metal oxide electrode in an alkaline ele

Details Current conductor for a metal oxide electrode in an alkaline ele Current conductor for a metal oxide electrode in an alkaline ele

1986-12-01

1988-07-26

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429224, 429245, 429209, H01M 604

Patent

active

047600020

ABSTRACT:
In connection with a metal oxide electrode in an alkaline electrolyte system, especially for a brownstone electrode, the presence of cobalt as a thin film or as an alloying consitituent at the surface of the positive current drain wire, which is preferably a nickel-plated steel cup or a deep-drawing steel plate, leads to a reduction of the contact resistance between the current drain wire and the MnO.sub.2. To apply the cobalt, the current drain wire is preferably polarized in an aqueous CoSO.sub.4 solution. The cobalt film, which is formed in a thickness of less than 1 micron (depending on the Co ion concentration and the selected current conditions), imparts resistance properties to the transition between the MnO.sub.2 and the nickel-plated current drain wire even after prolonged storage, which can otherwise only be achieved with gold-plated current drain wires.

REFERENCES:
patent: 2322613 (1943-06-01), Alexander
patent: 3264199 (1966-08-01), Fassell, Jr.
patent: 3499785 (1970-03-01), van Amstel
patent: 3945847 (1976-03-01), Kordesch et al.
patent: 4302322 (1981-11-01), Oda et al.
patent: 4555317 (1985-11-01), Nicolas et al.
patent: 4585715 (1986-04-01), Marple

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