FUEL CELL AND FUEL CELL STACK PROVIDED WITH SAME

A fuel cell of the present invention includes an electrolyte-layer-electrode assembly (5), a first separator (6a), a second separator (6b), and one or more gas permeation suppressing sections, the inner surface of the first separator (6a) and the inner surface of the second separator (6b) have a first region (21) and a second region (22), the gas permeation suppressing section is provided at least one of a first reactant gas channel (8) and a second reactant gas channel (9) so as to overlap with the first region (21) when viewed in a thickness direction of the first separator, and the gas permeation suppressing section is provided at least one of the first reactant gas channel (8) and the second reactant gas channel (9) so as to overlap with the second region (22) when viewed in the thickness direction of the first separator.