| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a gas diffusion layer capable of giving excellent conductivity and excellent water-repellent characteristics to a conductive porous base material for a fuel cell, and a paste composition used for the manufacturing method for the gas diffusion layer. <P>SOLUTION: The paste composition used to form a water-repellent layer 2 on the surface of the conductive porous base material 3 for a fuel cell is provided. The paste compsition contains conductive carbon particles, a non-polymer system fluorine material, a fluorine system resin, a dispersant, and water, and the non-polymer fluorine material exists in the water at a dispersed state. The gas diffusion layer 1 given excellent conductivity and water-repellent characteristics can be formed on the conductive porous base material for a fuel cell by using the paste composition. <P>COPYRIGHT: (C)2010,JPO&INPIT |
