| 摘要 |
PURPOSE: To reliably discharge water generated in a passage for fuel from the passage for fuel in a fuel cell. CONSTITUTION: A fuel cell 10 is constituted by laminating electrolytic membranes 12, gas diffusion electrodes 14 and a collector electrodes 20. A plurality of ribs 28, 38 intersecting to each other are formed on laminating surfaces (both surfaces) of the collector electrode 20. The ribs 28, 38 form fuel gas passages 29 and oxidized gas passages 39 together with gas diffusion electrodes 14. Hydrophilic membranes 40 are formed on the surfaces formed between the fuel gas passages 29 and the oxidized gas passages 39 by polyacrylic acid having hydrophilicity. Since water to be generated in the oxidized gas passages 39 flows vertically down along the hydrophilic membranes 40 or the front surfaces by the reaction during the operation of the fuel cell 10, generated water is discharged from the oxidized gas passages 39, and it can be prevented from staying in the oxidized gas passages 39. |
