Proton conductive carbon material

Details Proton conductive carbon material Proton conductive carbon material

C - Chemistry, Metallurgy

09

C

C09C 1/56 (2006.01) C09D 11/00 (2006.01) C09D 17/00 (2006.01) H01M 8/10 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2486698

The present invention provides methods for the incorporation of sulfonate functional groups onto the surface of particulate carbonaceous materials and provides several surface-modified carbonaceous material compositions resulting therefrom. The composition can further comprise a conducting polymer. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises sulfonating particulate carbonaceous material. The method can further comprise metallizing the sulfonated carbonaceous material.

L'invention concerne des procédés permettant d'incorporer des groupes fonctionnels de sulfonate sur la surface de matériaux carbonés particulaires et de produire plusieurs compositions carbonées résultantes à surface modifiée. La composition peut, en outre, être un polymère conducteur et comprendre un métal. Il est possible de construire des dispositifs comprenant ladite composition notamment des électrocatalyseurs supportés, des ensembles d'électrodes-membranes et des piles à combustible. L'invention concerne un procédé permettant de préparer la composition qui comprend un matériau carboné particulaire de sulfonation. Le procédé peut également consister à métalliser le matériau carboné sulfoné.

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