| 摘要 |
PURPOSE:To improve output performance by using a gas diffusion electrode containing proton conductive material, and obtained through heat treatment in a temperature range between glass transition point or more of the proton conductive material and 350 deg.C before its joining to an ion exchange membrane. CONSTITUTION:Proton conductive material is distributed over the whole electrode by impregnating the proton conductive material dissolved in water base medium into the electrode, or molding the electrode after adding the same during its molding process, and is joined after heat treatment at the temperature of the glass transition point or more of the proton conductive material. That is, in a fuel cell formed by joining an ion exchange membrane being electrolyte, and a gas diffusion electrode, made of carbon material supporting catalyzer and fluororesin binder, together, the proton conductive material is contained as the gas diffusion electrode. The gas diffusion electrode, obtained through heat treatment in a temperature range between glass transition point or more of the proton conductive material and 350 deg.C before its joining to the ion exchange membrane, is used also. Thereby it is possible to improve output performance greatly. |
