Carbon foam fuel cell components

Details Carbon foam fuel cell components Carbon foam fuel cell components

1977-08-15

1978-11-14

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 40, H01M 496

Patent

active

041256760

ABSTRACT:
In an electrochemical cell, such as a fuel cell, the gas distribution layer, which is the layer of material disposed directly behind and contiguous with the catalyst layer, is made from gas porous open cell carbon foam. Vitreous carbon foam is preferred. Vitreous carbon foam is extremely corrision resistant to many of the very reactive chemicals which might be used as an electrolyte in a fuel cell, such as phosphoric acid. It also has low electrical resistivity, good thermal conductivity, and can be made very thin and inexpensively. Preferably the cell catalyst layer is applied directly to one surface of the foam layer.

REFERENCES:
patent: 2924634 (1960-02-01), Fischbach et al.
patent: 2997518 (1961-08-01), Klopp et al.
patent: 3810789 (1974-05-01), Vermeulen et al.
patent: 3871922 (1975-03-01), Bohm et al.
patent: 3922334 (1975-11-01), Marek et al.
patent: 4024226 (1977-05-01), Lersmacher et al.
patent: 4038463 (1977-07-01), Lamarine et al.

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