Carbonaceous material and dispersion containing the same

Details Carbonaceous material and dispersion containing the same Carbonaceous material and dispersion containing the same

C - Chemistry, Metallurgy

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C01B 31/02 (2006.01) C09C 1/56 (2006.01) H01M 4/88 (2006.01) H01M 4/96 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01) H01M 4/86 (2006.01)

Patent

CA 2473221

A water-repellent carbonaceous material obtained by contacting a carbonaceous material with a water-repellent substance in a molten state or dropping an organic-solvent solution of a water-repellent substance into an aqueous dispersion of a carbonaceous material; and a gas diffusion layer, catalyst layer, or separator for electrodes for fuel cells which each comprises the water-repellent carbonaceous material.

La présente invention concerne une matière carbonée hydrofuge obtenue par mise en contact d'une matière carbonée avec une substance hydrofuge à l'état fondu ou par ajout goutte à goutte d'une solution de solvant organique d'une substance hydrofuge dans une dispersion aqueuse d'une matière carbonée. La présente invention concerne également une couche de diffusion gazeuse, une couche de catalyseur et un séparateur pour des électrodes destinées à des piles à combustible, qui comprennent chacun une telle matière carbonée hydrofuge.

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