Fuel cell

Details Fuel cell Fuel cell

2005-11-22

2009-08-11

Ryan, Patrick (Department: 4111)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S047000, C568S006000

Reexamination Certificate

active

07572541

ABSTRACT:
A fuel cell comprises a unit cell having a membrane-like electrode unit including an electrolyte membrane, a fuel electrode consisting essentially of a catalyst layer and a diffusion layer, which are formed in the order mentioned on one surface of the electrolyte membrane, and an air electrode consisting essentially of a catalyst layer and a diffusion layer, which are formed in the order mentioned on the other surface of the electrolyte membrane. The diffusion layer of at least the fuel electrode includes a carbon paper prepared by laminating carbon fibers, and a specified water repellent polymer is arranged to cover the surface of the carbon fiber of the carbon paper or is loaded in the clearance among the carbon fibers.

REFERENCES:
patent: 2004/0009389 (2004-01-01), Sakai et al.
patent: 2004/0170886 (2004-09-01), Sakamoto
patent: 2006/0147805 (2006-07-01), Iwayasu et al.
patent: 2890513 (1991-04-01), None
patent: 2004-234947 (2004-08-01), None

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