Gas-diffussion electrodes for polymeric membrane fuel cell

Details Gas-diffussion electrodes for polymeric membrane fuel cell Gas-diffussion electrodes for polymeric membrane fuel cell

1998-04-07

2000-01-25

Bell, Bruce F.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429 40, 429 41, 429 44, 204294, H01M 486

Patent

active

060176504

ABSTRACT:
The present invention describes an improved electrode suitable for application in solid polymer electrolyte fuel cells, comprising a thin, porous, planar, conductive substrate having one side coated with a pre-layer consisting of conductive carbon having a low surface area mixed to a first hydrophobic agent, to which is applied a catalytic layer consisting of platinum supported on conductive carbon with a high surface area, mixed to a second hydrophobic agent. The hydrophobic degree of the applied layers are suitably adjusted to obtain the best exploitation of the catalyst and to improve the water balance of the process.

REFERENCES:
patent: 4647359 (1987-03-01), Lindstrom
patent: 5636437 (1997-06-01), Kaschmitter et al.
patent: 5783325 (1998-07-01), Cabasso et al.

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