Method for fabricating a carbon electrode substrate

Details Method for fabricating a carbon electrode substrate Method for fabricating a carbon electrode substrate

1977-08-15

1978-09-19

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

264 295, 423445, 4234471, 429 45, C01B 3102, B29C 2500

Patent

active

041155289

ABSTRACT:
A method for fabricating porous carbon sheet material and in particular for fabricating porous carbon fuel cell electrode substrates comprises coating carbon fibers with a mixture of furfuryl alcohol and a catalyst which polymerizes furfuryl alcohol, forming the fibers into a mat or sheet of the desired size and thickness, heating the mat to polymerize the furfuryl alcohol and to cure the resin so formed, and further heating the mat to carbonize the resin.
Phosphoric acid is the preferred polymerization catalyst when the sheet material is to be used as a fuel cell electrode substrate. The method produces electrode substrates which are highly porous yet strong and which are also corrosion resistant, thermally conductive and electrically conductive.

REFERENCES:
patent: 3198714 (1965-08-01), Johnson et al.
patent: 3201330 (1965-08-01), Price
patent: 3367812 (1968-02-01), Watts
patent: 3407038 (1968-10-01), Beasley
patent: 3573086 (1971-03-01), Lambdin
patent: 4041116 (1977-08-01), Baud et al.

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