Gas diffusion layer arrangement for a fuel cell

Details Gas diffusion layer arrangement for a fuel cell Gas diffusion layer arrangement for a fuel cell

2005-05-31

2005-05-31

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S047000, C429S006000

Reexamination Certificate

active

06899971

ABSTRACT:
An inexpensive gas diffusion layer arrangement for fuel cell excellent in gas permeability, water repellence, and also excellent in mechanical strength, allowing a continuous formation. The gas diffusion layer arrangement is used for at least one of gas diffusion layers of a fuel cell where a fuel electrode side catalyst layer and an air electrode side catalyst layer are disposed at both faces of an electrolyte film, and further a gas diffusion layer arrangement is disposed respectively on the outer surface of the fuel electrode side catalyst layer and air electrode side catalyst layer, wherein the gas diffusion layer is formed of a mesh sheet having a heat resistance and an acid resistance, and a mixture of electrically conductive powder and water repellent filler for filling voids of the mesh sheet.

REFERENCES:
patent: 3793085 (1974-02-01), Hino et al.
patent: 4301218 (1981-11-01), Benczur-urmossy
patent: 5500292 (1996-03-01), Muranaka et al.
patent: 5863673 (1999-01-01), Campbell et al.

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