| 摘要 |
PROBLEM TO BE SOLVED: To improve contact between the surface of an electrode and a solid ion exchange membrane and increase the amount of power generation by installing an intermediate layer (a proton conductor) of an ion conductor softer than the electrode and an electrolyte layer between a fuel electrode and the electrolyte layer. SOLUTION: A fuel electrode 1 is prepared by applying a Pt-Ru base catalyst layer onto a carbon cloth, and an oxidizing agent electrode 4 is prepared by applying a Pt black catalyst layer onto a carbon cloth. About 5 wt.% perfluorosulfonic acid polymer solution is used and a solvent is vaporized to adjust the viscosity of the solution, a sheet forming slurry is prepared, and a thin membrane of a solid polymer layer softer than an electrode such as the fuel electrode 1 and the oxidizing agent electrode 4 and an electrolyte layer 3 is produced by a sheet forming method. An ion conductor intermediate layer 2 which is the thin membrane of the solid polymer layer is arranged so as to come in contact with the fuel electrode 1 and the electrolyte layer 3, and the oxidizing agent layer 4 and the electrolyte layer 3, and they are joined by a hot press method to bite into the irregular surface of the electrode. |
