Method for operating a fuel cell

Details Method for operating a fuel cell Method for operating a fuel cell

H - Electricity

01

M

H01M 8/04 (2006.01)

Patent

CA 2717540

The invention relates to a method for operating a fuel cell, particularly for switching off a fuel cell. In order to switch off the fuel cell, the supply of the gas mixture comprising oxygen and nitrogen is interrupted, wherein the oxygen present at the cathode reacts with the protons present by means of conversion, and the residual oxygen content at the cathode side of the fuel cell is lowered in this manner. Due to the method according to the invention, the fuel cell may be better stored, wherein a de-fined low chemical potential is applied at both electrodes.

L'invention concerne un procédé d'exploitation d'une pile à combustible, en particulier pour mettre hors circuit une pile à combustible. Pour mettre la pile à combustible hors circuit, on interrompt l'alimentation en mélange de gaz, lequel contient de l'oxygène et de l'azote. L'oxygène présent au niveau de la cathode réagit grâce à la transformation avec les protons présents, la teneur en oxygène résiduel étant ainsi réduite du côté de la cathode de la pile à combustible. Grâce au procédé selon l'invention, une pile à combustible peut être mieux stockée, un potentiel chimique bas défini étant appliqué aux deux électrodes.

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