| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separator for a fuel cell capable of preventing excessive occupation of condensed water in a cathode gas diffusion board by effectively absorbing and removing the condensed water from the cathode gas diffusion board, in a porous separator used for a fuel cell stack. <P>SOLUTION: In order to remove the condensed water to keep an occupation volume rate of the condensed water in the cathode gas diffusion board 15 below a predetermined value without causing gas diffusion inhibition, improvement is made to a pore distribution of the cathode gas diffusion board 15 and that of a cathode-side separator part plate 13. In addition, in order to eliminate absorption to a porous separator 4 of reaction produced water and drag water, improvement is made to a pore distribution of an interfacial surface of a rib part 17 being a contact part between the cathode gas diffusion board 15 and the cathode-side separator part plate 13, that is, an uneven state. <P>COPYRIGHT: (C)2008,JPO&INPIT |
