Conductive sheet material

Details Conductive sheet material Conductive sheet material

H - Electricity

01

M

H01M 4/86 (2006.01) H01B 1/24 (2006.01) H01M 4/88 (2006.01) H01M 4/96 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2405351

A conductive microporous sheet material comprises primary carbon fibres having a cross-sectional dimension of at least 1 µm, secondary carbon fibres in the form of carbon nanofibres and a binding agent for binding said primary and secondary fibres. The material may be produced by a wet-laid non-woven (paper- making) process. The sheet material may be used as a gas diffusion layer for a fuel cell or an electrode material for a battery.

Cette invention se rapporte à un matériau en feuille microporeux conducteur, qui comprend des fibres de carbone primaires ayant une section transversale égale à 1 µm au moins, des fibres de carbone secondaires ayant la forme de nanofibres de carbone et un agent de liaison servant à lier ces fibres primaires et ces fibres secondaires. Ce matériau peut être produit par un procédé (de fabrication du papier) non tissé obtenu par voie humide. Ce matériau en feuille peut être utilisé comme couche de diffusion de gaz pour piles à combustible ou comme matériau électrode pour batteries.

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