| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell that easily and reliably drains produced water that is likely to be accumulated in a lower portion of an electrode surface in a direction of gravitational force, from the electrode surface with a simple configuration.SOLUTION: A fuel cell 10 includes power generation units 12, each having a first metal separator 14, a first membrane electrode assembly 16a, a second metal separator 18, a second membrane electrode assembly 16b, and a third metal separator 20. In a surface 14a of the first metal separator 14, a first oxidant gas passage 26 is formed. A bottom wavy passage groove 26ae is arranged at the bottom of the first oxidant gas passage 26 in the direction of gravitational force, and has drainage passages 32 that extend downward in the direction of gravitational force from the lowermost points of respective waves in the direction of gravitational force. |
