Metal-air cathode and cell having catalytically active manganese

Details Metal-air cathode and cell having catalytically active manganese Metal-air cathode and cell having catalytically active manganese

1993-02-09

1994-05-03

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 42, 429 44, 429224, 2521821, H01M 450, H01M 400

Patent

active

053087119

ABSTRACT:
An air cathode for a metal-air cell and methods for making it are provided. In the air cathode of the present invention, manganese compounds of valence state +2 act as catalysts for the reduction of oxygen, and are distributed substantially evenly throughout a carbon matrix. Manganese compounds of valence state +2 form between carbon particles after the carbon particles are added to an aqueous solution of potassium permanganate.

REFERENCES:
patent: 3948684 (1976-04-01), Armstrong
patent: 4197362 (1980-04-01), Schmidberger et al.
patent: 4256545 (1981-03-01), Deborski
patent: 4789561 (1988-12-01), Schaefer et al.
patent: 4894296 (1990-01-01), Borbely et al.
patent: 4906535 (1990-03-01), Hoge
patent: 5032473 (1991-07-01), Hoge
Grant et al., "Chemical Dictionary", 5th Ed., McGraw-Hill Book Company, USA, 1987, p. 353.
"Carbon-air electrode with regenerative short time overload capacity," Zoltowski, et al, 1973, Journal of Applied Electrochemistry, vol. 3, pp. 271-283.

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