Gas flow passage formation plate for fuel cell and fuel cell stack

A gas flow passage formation plate for a fuel cell, wherein the gas flow passage formation plate is located between a membrane electrode assembly and a partition plate and is included in a separator of a cell in a fuel cell, the gas flow passage formation plate comprising:

• a plurality of projections that project toward the membrane electrode assembly, wherein the projections are arranged in a first direction and a second direction that is orthogonal to the first direction;
• a gas flow passage formed by a portion of the gas flow passage formation plate at a side opposing the membrane electrode assembly and including regions between adjacent ones of the projections;
• a water flow passage formed by a portion of the gas flow passage formation plate at a side opposing the partition plate and including an inside of each of the projections;
• and
• a plurality of openings, each formed in a side wall of one of the projections and connecting the inside and an outside of the projection, wherein in a state in which the openings sandwich the regions between adjacent ones of the projections, the openings are arranged so as not to oppose and overlap each other in a direction orthogonal to a direction in which gas flows in the regions between adjacent ones of the projections.