| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell having a separator of porous material in which generated water in a diffusion layer is efficiently discharged. <P>SOLUTION: The fuel cell 10 has a cathode separator 22 comprising a compact portion and a porous portion in which the area ratio of the contact region 229P to the non-contact region (oxidation gas passage) of the porous portion 40 and the diffusion layer 212 is set to be larger than the are ratio of the contact region 229S to the non-contact region (oxidation gas passage) of the compact portion and the diffusion layer 212. Further, the porous portion 40 has a predetermined shape (71-78) as area increasing means on the contacting surface in the contact region 229P. As the result, the generated water condensed in diffusion layer 212 is effectively absorbed in the porous portion 40. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
