Porous carbon fuel cell substrates and method of manufacture

Details Porous carbon fuel cell substrates and method of manufacture Porous carbon fuel cell substrates and method of manufacture

1975-12-15

1978-03-21

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

162138, 162146, 162157R, 264 297, 264 43, 264 91, 4234476, 4234477, 428280, D21H 148

Patent

active

040804135

ABSTRACT:
Porous carbon sheets suitable for use as fuel cell electrode support plates are produced by stabilizing acrylic filament precursors through the controlled addition of oxygen thereto. The stabilized filaments are thereafter chopped into short lengths, felted and pressed into sheets with the pressing step being performed at a temperature determined by the oxygen content of the stabilized filaments. The sheets are thereafter pyrolyzed to produce the desired porous substrate material.

REFERENCES:
patent: 3265557 (1966-08-01), De Fries
patent: 3367812 (1968-02-01), Watts
patent: 3619139 (1971-11-01), Dixon et al.
patent: 3639266 (1972-02-01), Battista
patent: 3671192 (1972-06-01), Ezekiel
patent: 3700511 (1972-10-01), Whitney et al.
patent: 3728423 (1973-04-01), Shaffer
patent: 3818082 (1974-06-01), Burns et al.
patent: 3829327 (1974-08-01), Omori et al.
patent: 3971669 (1976-07-01), Wrzesien et al.
patent: 3998689 (1976-12-01), Kitago et al.
patent: 4002426 (1977-01-01), Chenevey et al.

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