| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system in which a humid state of an electrolyte film and a catalyst layer is maintained, in which a dry and wet history is inhibited to be added to the electrolyte film and the catalyst layer, in which deterioration of the electrolyte film and the catalyst layer is little and which is high in durability when a cell voltage is higher than a prescribed one. <P>SOLUTION: When the cell voltage detected by an output voltage detecting means 18 is higher than the prescribed voltage, a control device 22 switches a three-way valve 11 or 13 to a humidifying means 9 or 10 side, supplies a humidified fuel gas or an oxidizer gas to the fuel cell stack 1, and increases the amount of water contained in the electrolyte film and the catalyst layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
