| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid oxide type fuel cell capable of inhibiting the lowering of the performance of battery caused by the deterioration of an electrode. SOLUTION: A solid oxide type fuel cell 10 is usually operated under a high temperature of about 800-1000 deg.C, so that an air electrode is oxidized and a fuel electrode 14 is reduced, which impairs the characteristic of an electrode. As the countermeasure, methane is supplied to the air electrode 12 and the air is supplied to the fuel electrode 14 in a cooling-down process after the stop of the operation, whereby the reaction countray to the deterioration reaction is generated and the characteristic of the electrode can be recovered. |
