| 摘要 |
The present invention provides a porous electrode substrate and a manufacturing method thereof, a film-electrode combination with the substrate and a solid high-polymer fuel cell. The invention provides the porous electrode substrate with the advantages of low thermal diffusion coefficient in a thickness direction and high flooding resistance at high moisture state or high current density area, and the film-electrode combination with the substrate, and the solid high-polymer fuel cell. The porous electrode substrate is prepared through the method which comprises the following steps: a step of obtaining a piece of carbon fiber paper which is adhered with the resin and is obtained through causing carbon precursor resin to adhere with the carbon fiber paper that comprises the planar scattered short carbon fibers with an average fiber diameter of 3-9 mu m and original fiber-shaped object; a step of performing hot pressing and solidifying the carbon fiber paper which is adhered with resin for obtaining an intermediate substrate; and heating the intermediate substrate with a maximum temperature of 1000-1800 DEG C and carbonizing the carbon precursor resin. |
