Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1993-02-09
1994-08-09
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 33, 429 35, H01M 810
Patent
active
053365704
ABSTRACT:
Disclosed is a hydrogen fuel cell which resists swelling of a proton-exchange membrane electrolyte by clamping the membrane between two catalytic electrodes in a tubular or frusto-conical configuration. Improved breathability and hydrogen sealing are obtained. The electrodes can be bonded to the solid electrolyte by employing an electrolytic proton-transporting polymer in the liquid-phase. Including finely divided platinum in the liquid phase provides an advantageous means of incorporating catalyst in the cell. Also disclosed is a blind tube porous carbon electrode assembly which can be manufactured by a method including coating a self-supporting electrode with a liquid-phase polymeric electrolyte material, for example, perfuorosulfonic acid, and curing it.
REFERENCES:
patent: 4175165 (1979-11-01), Adlhart
patent: 4824742 (1989-04-01), Parry
patent: 5094928 (1992-03-01), Dyer
patent: 5171646 (1992-12-01), Rohr
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