| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas diffusion layer of a fuel cell capable of maintaining water repellency for a long time, while securing conductivity. <P>SOLUTION: The fuel cell is provided with a gas diffusion layer diffusing gas to be supplied to an electrolyte film. The gas diffusion layer is structured with a conductive porous body layer, of which, a part to be in contact with water molecules produced by power generation of the fuel cell is coated with water-repellent matter. Further, the water-repellent matter, existing at a part to be in contact with a catalyst layer, a separator or the like on the conductive porous body layer, is removed. With this, conductivity inhibition by the water-repellent matter with high electric resistance can be avoided. Further, since the part other than the contact part is surely coated with the water-repellent matter, degradation of water repellency due to degeneration of water or the like can be avoided. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
