Gas diffusion electrodes, membrane-electrode assemblies and...

Details Gas diffusion electrodes, membrane-electrode assemblies and... Gas diffusion electrodes, membrane-electrode assemblies and...

H - Electricity

01

M

H01M 4/86 (2006.01) C25B 11/03 (2006.01) H01M 4/88 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2604304

A method for forming a patterned noble metal coating on a gas diffusion medium substantially free of ionomeric components comprising subjecting an electrically conductive web with a patterned mask overlaid thereto to a first ion beam having an energy not higher than 500 eV, and to a second beam having an energy of at least 500 eV, containing the ions of at least one noble metal and a gas diffusion electrode.

L'invention porte sur: un procédé qui permet de former un revêtement de métal noble à motifs sur un support de diffusion gazeuse sensiblement dépourvu de composants ionomères, selon lequel on soumet une bande électroconductrice recouverte d'un masque à motifs à un premier faisceau ionique d'une énergie inférieure ou égale à 500eV, et à un second faisceau d'une énergie d'au moins 500eV contenant les ions d'un métal noble au moins; et sur une électrode à diffusion gazeuse.

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