Fuel cell

Details Fuel cell Fuel cell

1984-02-08

1987-06-16

Hearn, Brian E.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429 49, 429 45, H01M 486

Patent

active

046736247

ABSTRACT:
A fuel cell is constructed of three porous membranes filled with electrolyte. Outer membranes are plated externally with a metal film. The metal films are coated with a release agent. A catalyst film is coated on the release agent and on annular edges of the metal films adjacent each pore of the membranes. Dissolving the release agent recovers the catalyst and leaves only a small catalyst ring on the exposed edges of the metal electrodes adjacent the pores. Metal grids may be added to aid in conduction of electricity. Electrolyte within the porous membrane sandwich is exposed to fuel gas adjacent one electrode and to oxidizer gas adjacent the other electrode in the areas of the catalyst rings, resulting in a compact fuel cell and a highly efficient use of catalyst.

REFERENCES:
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patent: 3297484 (1967-01-01), Niedrach
patent: 3348974 (1967-10-01), Barber et al.
patent: 3351487 (1967-11-01), Levine et al.
patent: 3467552 (1969-09-01), Giner
patent: 3787244 (1974-01-01), Schulmeister et al.
patent: 3979227 (1976-09-01), Katz et al.
patent: 4100331 (1978-07-01), Fletcher et al.
patent: 4297421 (1981-10-01), Turillon
patent: 4328086 (1982-05-01), Takenaka et al.
patent: 4345008 (1982-08-01), Breault

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