Patent ID: 6866956

Claim:
A fuel cell formed by stacking a plurality of fuel cell units such that the fuel cell units sandwich cooling surface sealing members that seal a cooling medium communication passage formed between the fuel cell units, each fuel cell unit comprising: an electrode assembly formed by disposing electrodes on both sides of an electrolyte; a pair of separators that sandwich the electrode assembly in the thickness direction thereof; and a gas sealing member that is disposed at an outer peripheral portion of the electrode assembly, and that seals respective gas communication passages for reaction gases that are formed between each separator and the electrode assembly and are bounded by the separators and the electrode assembly, wherein in each of the separators, there are provided communication holes for the reaction gases and the cooling medium that penetrate the separators in the thickness direction thereof to the outer side of the gas sealing member, and a communication passage that detours around the gas sealing member in the thickness direction of the separators and connect the reaction gas communication hole with the gas communication passage; and the cooling surface sealing member that seals off the cooling medium communication passage from the reaction gas communication hole is provided at a position that is shifted from the communication passage towards the communication hole.