GAS DIFFUSION SUBSTRATE

A gas diffusion substrate comprising a non-woven network of carbon fibres wherein the carbon fibres are graphitised but the non-woven network has not been subjected to a graphitisation process is disclosed. A mixture of graphitic particles and hydrophobic polymer is disposed within the network. The...

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Main Authors QUAYLE, GEORGE, THOMAS, SIODLAK, JULIAN, ANDREW, SHARMAN, JONATHAN, DAVID, BRERETON, WALKER, NIGEL, JULIAN, ROWE, JULIA, MARGARET
Format Patent
LanguageEnglish
French
Published 29.12.2005
Edition7
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Summary:A gas diffusion substrate comprising a non-woven network of carbon fibres wherein the carbon fibres are graphitised but the non-woven network has not been subjected to a graphitisation process is disclosed. A mixture of graphitic particles and hydrophobic polymer is disposed within the network. The longest dimension of at least 90% of the graphitic particles is less than 100µm. Processes for manufacturing the gas diffusion substrates are also disclosed. Substrat à diffusion gazeuse comprenant un réseau non tissé et de fibres de carbone graphitisées, le réseau non tissé n'ayant pas été soumis à un procédé de graphitisation. Un mélange de particules graphitiques et d'un polymère hydrophobe est placé dans le réseau. La dimension la plus longue d'au moins 90 % des particules graphitiques est inférieure à 100 mu m. Procédés de fabrication de ces substrats.
Bibliography:Application Number: WO2005GB02371