Molding material for fuel cell separator and method for...

H - Electricity – 01 – M

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H01M 2/16 (2006.01) H01M 8/00 (2006.01)

Patent

CA 2510209

Disclosed herein is a method for preparing a molding material for a fuel cell separator by dissolving an epoxy resin, a hardener and other additives in acetone and mixing a planar expanded graphite powder with the solution. Farther disclosed are a molding material prepared by the method and a fuel cell separator produced from the molding material. The fuel cell separator shows very low gas permeability, superior electrical conductivity, sufficient strength, and maximized uniformity throughout the overall structure of the finished product.

Voici une méthode de préparation d'une matière à mouler pour un séparateur de piles à combustible consistant à dissoudre une résine époxyde, un durcisseur et d'autres additifs dans l'acétone et à mélanger la solution à une poudre de graphite étalée à plat. En utilisant la même méthode, une autre matière à mouler est préparée pour produire un séparateur de piles à combustible. Le séparateur de piles à combustible montre un très faible taux de perméabilité au gaz, une meilleure conductivité électrique, une force suffisante et une uniformité maximale dans l'ensemble de la structure du produit fini.

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