Fuel cell using variable porosity gas diffusion material

Details Fuel cell using variable porosity gas diffusion material Fuel cell using variable porosity gas diffusion material

2006-11-07

2006-11-07

Crepeau, Jonathan (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S006000, C429S047000, C429S047000

Reexamination Certificate

active

07132192

ABSTRACT:
A fuel cell (100) includes a membrane electrode assembly (110) located together with a layer of variable porosity porous gas diffusion material (150). The variable porosity gas diffusion material layer (150) operates to selectively limit the amount of reactants reaching localized areas of the membrane electrode assembly (110) in order to reduce hot spots.

REFERENCES:
patent: 4799762 (1989-01-01), Kakuta et al.
patent: 5998058 (1999-12-01), Fredley
patent: 6699611 (2004-03-01), Kim et al.
patent: 6743543 (2004-06-01), Muthuswamy et al.
patent: 06-267555 (1994-09-01), None

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