A fuel cell has an anode electrode (3), a cathode electrode (5), the
membrane electrolyte (4) sandwiched by the anode and cathode electrodes,
two separators (1, 7), a first current collector (2) and a second current
collector (6). The two separators (1, 7) each having a flat plate-shaped
porous body are disposed to sandwich the two electrodes. The two
separators are water permeable. The first current collector (2) is
disposed between the anode electrode and one separator, the first current
collector forming a first gas channel allowing flow of the fuel gas. The
second current collector (6) is disposed between the cathode electrode
and the other separator, the second current collector forming a second
gas channel allowing flow of the gaseous oxidant.