Fuel cell

Details Fuel cell Fuel cell

2007-11-20

2007-11-20

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

Reexamination Certificate

active

10991094

ABSTRACT:
A fuel cell includes a laminated, plate-shaped membrane electrode assembly and first and second separator plates sandwiching the membrane electrode assembly. The membrane electrode assembly includes a polymer electrolyte membrane; first and second electrode layers sandwiching the polymer electrolyte membrane; and first and second gas-diffusion layers disposed on an outer side of the electrode layers, respectively. The first and second gas-diffusion layers are made of an air-permeable metallic material. An arithmetic average roughness Ra of a surface of the air-permeable metallic material on the side contacting one of the electrode layers is in a range of 0.1 μm≦Ra≦1.0 μm.

REFERENCES:
patent: 7138206 (2006-11-01), Yoshida et al.
patent: 2004/0157112 (2004-08-01), Suzuki et al.
patent: 2000-58072 (2000-02-01), None
patent: 2006-351466 (2006-12-01), None

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