H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/96 (2006.01) H01M 4/86 (2006.01) H01M 4/88 (2006.01) H01M 8/10 (2006.01)
Patent
CA 2446001
In a method of manufacturing a fluid diffusion layer for a solid polymer electrolyte fuel cell, a surface of the fluid diffusion layer is abraded so that the topography of the fluid diffusion layer surface is rendered more uniform. The fluid diffusion layer comprises a porous substrate, and may also comprise a carbon-containing sublayer, as well as hydrophobic material. The particles formed by the abrading operation may be deposited into at least some of the pores of the substrate to form a support structure for the direct depositing of a catalyst onto the abraded surface.
L'invention porte sur un procédé d'élaboration d'une couche de diffusion de fluide de pile à combustible selon lequel la surface de ladite couche est soumise à une abrasion de manière à en rendre plus uniforme la topographie. Ladite couche comporte un substrat poreux, et peut également comporter une sous-couche contenant du carbone ainsi qu'un matériau hydrophobe. Les particules formées pendant l'abrasion peuvent se déposer dans certains au moins des pores du substrat de manière à constituer une structure support permettant le dépôt direct d'un catalyseur sur la surface abrasée.
Gordon John Robert
Haas Herwig Robert
Peinecke Volker
von Der Osten-Fabeck Jorg
Ballard Power Systems Inc.
Borden Ladner Gervais Llp
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