OPERATION SWITCHING METHOD OF REVERSIBLE CELL

摘要

PROBLEM TO BE SOLVED: To provide a short-time and easy switching method of operation modes for a reversible cell integrating a solid polymer type water electrolysis device and a fuel cell.

SOLUTION: In the reversible cell 1 integrating the solid polymer type water electrolysis device and the fuel cell, when the operation mode is switched over from the water electrolysis device operation to the fuel cell operation, electrolyte water remaining in a channel is drained from inside the cell by supplying gas into a reaction gas channel inside the reversible cell 1 after finishing the water electrolysis operation and before starting the fuel cell operation. Afterwards, an interior substrate of the cell is dried by supplying air only to the reaction gas channel 14 on an oxidant electrode side when the fuel cell is in operation.

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