Lightweight fuel cell membrane electrode assembly with integral

Details Lightweight fuel cell membrane electrode assembly with integral Lightweight fuel cell membrane electrode assembly with integral

1991-09-13

1993-10-12

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 26, 429 32, 429 34, H01M 804

Patent

active

052524108

ABSTRACT:
An electrochemical fuel cell is provided for converting a fuel reactant stream and an oxidant reactant stream to a reaction product stream and electrical energy. The fuel cell includes a membrane electrode assembly interposed between two separator layers. The separator layers are formed of thin electrically conductive sheet material which is substantially impermeable to the fuel and oxidant reactant streams. The membrane electrode assembly comprises first and second electrode layers formed of porous electrically conductive sheet material. The electrode layers have a catalyst associated therewith, and an ion exchange membrane is interposed between the first and second electrode layers. The electrode layers include passages, such as the interstitial spaces within the electrode material or grooves formed in the surface of the electrode material, for flowing a reactant stream between an inlet and outlet within the electrode layer. The incorporation of the reactant flow passages within the electrode material permits the use of thin, lightweight separator layers, thus providing higher power-to-volume and power-to-weight ratios than conventional fuel cells having reactant flow passages engraved, milled or molded in the separator plates.

REFERENCES:
patent: 3297484 (1967-01-01), Niedrach
patent: 3554809 (1971-01-01), Craft
patent: 4175165 (1979-11-01), Adlhart
patent: 4279970 (1981-07-01), Breault et al.
patent: 4345008 (1982-08-01), Breault
patent: 4826741 (1989-05-01), Aldhart et al.
patent: 4894355 (1990-01-01), Takeuchi et al.
patent: 4929517 (1990-05-01), Luoma et al.
patent: 4977041 (1990-12-01), Schiowaza et al.
"Integrated Electrode Substrate Of Phosphoric Acid Fuel Cell (KES-1)", Fukuda et al., Oct. 1986.
"Electrode Substrate For Phosphoric Acid Fuel Cell", Miwa et al. (date unknown).

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