Fuel cell

A fuel cell comprising:

• an electrode;
• a separator, wherein the electrode and the separator are stacked together;
• a plurality of ribs which are provided on a major surface of the separator and which form a reaction gas flow path;
• and
• a sealant, which fixes at least one rib that divides adjacent flow paths among the plurality of ribs and the electrode, is impregnated in the electrode, and has a flow property, wherein porosity of a portion of the electrode that is impregnated with the sealant is lower than the porosity of another portion of the electrode;
• wherein the sealant is provided where the at least one rib that divides adjacent flow paths among the plurality of the ribs contacts the electrode;
• wherein the plurality of ribs include at least one first rib that divides adjacent flow paths where the flows are in the same direction and at least one second rib that divides adjacent flow paths where the flows are in opposite directions to form a serpentine flow path, and
• a plurality of oblique ribs are provided, wherein an oblique rib is located at each turn portion in the serpentine flow path, wherein a generally triangular void is formed by at least one oblique rib, the void serves as a liquid sealant storage portion;
• and
• wherein the liquid sealant storage portion is depressed in the thickness direction.