Anion exchange membranes

Details Anion exchange membranes Anion exchange membranes

C - Chemistry, Metallurgy

08

J

C08J 5/22 (2006.01)

Patent

CA 2676100

A method for preparing an anion exchange membrane suitable for use in an alkaline fuel cell and particularly in a direct borohydride fuel cell, involves radiation grafting a hydrocarbon polymer film with a monomer and adding a quaternising agent. The degree of grafting is improved by mixing the monomer with a diluent comprising alcohol and a hydrocarbon solvent.

L'invention concerne un procédé de préparation d'une membrane échangeuse d'anions pouvant être utilisée dans une pile à combustible alcaline, et en particulier dans une pile à combustible à borohydrure directe. Le procédé comporte les étapes consistant à : greffer sous rayonnement un film de polymère d'hydrocarbure avec un monomère, et ajouter un agent de quaternisation. On améliore le degré de greffage en mélangeant le monomère avec un diluant comprenant de l'alcool et un solvant d'hydrocarbure.

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