Method and system for starting up fuel cell stack at subzero...

H - Electricity – 01 – M

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H01M 8/04 (2006.01) H01M 2/14 (2006.01) H01M 8/10 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2664716

A method of starting up at a subzero temperature a solid polymer electrolyte fuel cell stack that is formed by stacking a plurality of layers of separators and membrane electrode assemblies having a solid polymer electrolyte membrane and electrodes. The method includes a step of using a solid polymer electrolyte fuel cell stack in which the separators are made from metal and have a cross-sectional waveform structure, and a space that is formed between at least a portion of the separators and separators that are placed adjacent to this portion of the separators is used as a coolant flow passage.

Une méthode de mise en marche à une température inférieure à zéro degré d'un empilement de piles à combustible à électrolyte polymère solide qui est formé par l'empilement de plusieurs couches de séparateurs et d'ensembles membrane-électrode dotés d'une membrane électrolyte polymère solide et d'électrodes. La méthode inclut une étape d'utilisation d'un empilement de piles à combustible à électrolyte polymère solide dans lequel les séparateurs sont fabriqués de métal et sont dotés d'une structure de forme sinusoïdale en coupe transversale, et un espace, qui est formé entre au moins une partie des séparateurs et des séparateurs qui sont placés contigus à cette portion des séparateurs, est utilisé comme un passage d'écoulement de liquide de refroidissement.

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