| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation method of a solid polymer fuel cell wherein coagulation/residence of water is appropriately controlled, and PEFC cell can be made to be stably operated. SOLUTION: A membrane thickness of a polymer membrane is made to be 30 μm to 100 μm, and a cell temperature is constantly controlled as the whole cell, and the humidity at the operating cell temperature is made to be 100%, and when the relative humidity for the cell temperature of the fuel gas is taken as Y% and the relative humidity for the cell temperature of the air is taken as X%, parameters in mutual relations are set that the humidity is controlled within the optimized range surrounded by the range that Y<=-3/10X+140, Y>=-11/10X+130, Y<=20X-270, and Y>=20X-1,600. |
