| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbon fiber sheet for a solid polymer fuel cell gas diffusion layer having a porous shape, elasticity, rich flexibility, and good handleability. <P>SOLUTION: The carbon fiber sheet 2 for the solid polymer fuel cell gas diffusion layer is made of a carbon fiber 4, and amorphous carbon 8 containing carbon particles 6 and bonding crossing parts of the carbon fibers 4 to each other. In this sheet, a mass ratio C/(B+C) of the carbon particle content (C) to the sum of the amorphous carbon content (B) and the carbon particle content (C) is 0.65-0.95, and the mass ratio (B+C)/A of the sum of the amorphous carbon content (B) and the carbon particle content (C) to the carbon fiber content (A) is 1.50-5.00. <P>COPYRIGHT: (C)2008,JPO&INPIT |
