| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell having sufficient power performance by setting the content of the water-repellent resin material of an oxygen electrode larger than the content of the water-repellent resin material of a hydrogen electrode. SOLUTION: A hydrogen electrode side conductive porous layer 71 and a hydrogen electrode side current collector 21 are arranged on one side of a solid polymer electrode 5 as a hydrogen electrode, and an oxygen electrode side conductive porous layer 72 and an oxygen electrode side current collector 22 are arranged on the other side. Steam and hydrogen are fed to the hydrogen electrode side current collector 21 and the hydrogen electrode side conductive porous layer 71 from a first feed pipe 61. Steam and oxygen are fed to the oxygen electrode side current collector 22 and the oxygen electrode side conductive porous layer 72 from a second feed pipe 62. Polytetrafluoroethylene 20-40 wt.% is contained in a hydrogen electrode and an oxygen electrode as a water- repellent resin material, and the content quantity of the water-repellent resin material of the oxygen electrode is made larger than that of the hydrogen electrode. The hydrogen electrode side has a hydrophilic tendency, and the oxygen electrode side has a water-repellent tendency, and the balance between a gas feed capability and a catalyst capability is improved. |
