Electrochemical fuel cell employing ambient air as the oxidant a

Details Electrochemical fuel cell employing ambient air as the oxidant a Electrochemical fuel cell employing ambient air as the oxidant a

1993-12-22

1995-11-28

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 30, 429 34, 429 35, 429 40, 429 41, H01M 802

Patent

active

054706718

ABSTRACT:
An electrochemical fuel cell assembly includes a membrane electrode assembly which comprises an anode, a cathode having a surface thereof exposed to ambient air, and an ion exchange membrane interposed between the anode and the cathode. A seal forms a gas-impermeable barrier around the anode to which a gaseous fuel stream is supplied. The assembly further includes a thermally conductive plate having a plurality of thermally conductive members or fins extending from a major surface of the plate. The thermally conductive members contact portions of the exposed cathode surface. Adjacent thermally conductive members cooperate with the plate and the exposed cathode surface to form air conducting channels. Heat generated exothermically in the membrane electrode assembly is dissipated to the atmosphere through the thermally conductive members.

REFERENCES:
patent: 668838 (1901-02-01), de Lavison
patent: 3507702 (1970-04-01), Sanderson
patent: 4414291 (1983-11-01), Breault
patent: 4988583 (1991-01-01), Watkins et al.
patent: 5108849 (1992-04-01), Watkins et al.
patent: 5190834 (1993-03-01), Kendall
patent: 5242764 (1993-09-01), Dhar
patent: 5284718 (1994-02-01), Chow et al.
patent: 5300370 (1994-04-01), Washington et al.

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