Structures for gas diffusion electrodes

H - Electricity – 01 – M

Patent

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Details

H01M 4/86 (2006.01) H01M 4/88 (2006.01) H01M 4/90 (2006.01) H01M 4/92 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2664373

The invention relates to gas diffusion electrode architecture and gas diffusion electrode backings for electrochemical applications, and to methods for producing the same gas diffusion electrode comprising: a) at least one gas diffusion media, b) at least one catalyst layer on top of said gas diffusion media comprising at least one supported catalyst and c) at least one unsupported catalyst layer on top of the supported catalyst layer mentioned under (b) above, said unsupported catalyst layer having a higher total catalyst loadind than in (b).

L'invention a trait à une architecture d'électrode à diffusion gazeuse et à des supports d'électrode à diffusion gazeuse pour des applications électrochimiques, ainsi qu'à des procédés permettant de produire cette même électrode à diffusion gazeuse comprenant : a) au moins un support de diffusion gazeuse b) au moins une couche de catalyseur sur le dessus dudit support de diffusion gazeuse comprenant au moins un catalyseur supporté et c) au moins une couche de catalyseur non supporté sur le dessus de la couche de catalyseur supporté mentionnée au point b) ci-dessus, ladite couche de catalyseur non supporté ayant une charge totale de catalyseur plus élevée qu'au point b).

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