Scalable, all-polymer fuel cell

H - Electricity – 01 – M

Patent

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Details

H01M 8/00 (2006.01) H01M 4/92 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2387817

A methanol-air fuel cell consisting of a stack of sub-fuel cells, each sub- fuel cell comprising a proton conducting polymer membrane, with each membrane having an array of 1-cm2-anode unit cells on one side and an array of cathode unit cells on the other. A thin polymer film, with openings for the unit cells and plated with pre-patterned lines of electrical leads, is placed on each side of the membrane to collect the current from each unit cell. A polymer fuel-feed plate is placed on the thin polymer film on each side of the membrane to feed methanol and oxygen to the electrodes.

La présente invention concerne une pile à combustible méthanol-air faite d'un empilement de sous-ensembles piles à combustible. En l'occurrence, chaque sous-ensemble pile à combustible comprend une membrane polymère conduisant les protons, chaque membrane comportant sur une face une matrice de cellules anodiques unitaires de 1 cm?2¿, et sur l'autre face une matrice de cellules cathodiques unitaires. Un film fin polymère, pourvu d'orifices correspondant aux cellules unitaires, et garni de tracés électro-conducteurs pré-imprimés, est disposé de part et d'autre de la membrane de façon à recueillir le courant provenant de chaque cellule unitaire. Une plaque polymère d'alimentation en combustible est disposée sur le film fin polymère de part et d'autre de la membrane de façon à alimenter en méthanol et oxygène les électrodes.

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