Gas diffusion electrodes for polymeric membrane fuel cell

Details Gas diffusion electrodes for polymeric membrane fuel cell Gas diffusion electrodes for polymeric membrane fuel cell

H - Electricity

01

M

H01M 8/10 (2006.01) H01M 4/96 (2006.01) H01M 4/92 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2234213

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.

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