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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Bibliographic Details
Main Author QUAYLE GEORGE THOMAS,ROWE JULIA MARGARET,SHARMAN JONATHAN DAVID BRERETO,SIODLAK JULIAN ANDREW,WALKER NIGEL JULIAN
Format Patent
LanguageEnglish
Published 27.06.2007
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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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 100 m. Processes for manufacturing the gas diffusion substrates are also disclosed.
Bibliography:Application Number: CN200580019859