| 摘要 |
PROBLEM TO BE SOLVED: To regenerate a solid polyelectrolyte fuel cell having a deteriorated cell characteristic by accumulating cation in a solid polyelectrolyte film. SOLUTION: The operation for power generation is stopped. Dilute sulfuric acid is then supplied from the anode gas feed hole 12 and the cathode gas feed hole 13 in a fuel cell stack 10 through the internal gas flow line and reaches the solid polyelectrolyte film for acid treatment, so that proton displaces the accumulated cation. After the acid treatment, pure water is supplied from the anode gas feed hole 12 and the cathode gas feed hole 13 for cleaning, and nitrogen gas is supplied for drying. |
