Electrochemical cell

Details Electrochemical cell Electrochemical cell

1988-06-23

1989-09-12

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Process of cell operation

429206, 429214, 429224, 2521821, H01M 604, H01M 450, H01M 460

Patent

active

048659274

ABSTRACT:
Alkaline MnO.sub.2 /Zn cells having nickel-plated steel cups as the cathode collector show deterioration of their discharge characteristics after high-temperature storage, which can be prevented by an additive in the cathode paste which forms a strong complex with nickel. Nickel oxide layers of high ohmic resistance, which are the cause of the contact resistance between the cathode and the nickel coating of the steel cup, are accordingly dissolved or transformed. Imidazole, 2-picolinic acid, dimenthylglyoxime, 4,5-dihydroxbenzene-1,3-disulfonic acid and 1,10-phenanthroline are particularly effective additives for compounding into the cathode. Preferred amounts are between 0.001 wt. % and 1 wt. %.

REFERENCES:
patent: 4520083 (1985-05-01), Pratr et al.
patent: 4643958 (1987-02-01), Thrash et al.
Chem. Abs. vol. 101, No. 8481G, 1984.
Chem. Abs. vol. 98, No. 145206E, 1983.
Chem. Abs. vol. 92, No. 24037T, 1980.
Chem. Abs. vol. 88, No. 107896R, 1978.

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