| abstract |
PROBLEM TO BE SOLVED: To dry a polymer electrolyte membrane to suppress the flooding phenomenon, and the durability is deteriorated. An MEA having a hydrogen ion conductive polymer electrolyte membrane, an anode and a cathode sandwiching the polymer electrolyte membrane, and a front surface disposed on one side of the MEA so that the front surface is in contact with the anode. A plate-like anode separator having a fuel gas flow path through which the fuel gas flows, and an oxidant gas which is disposed on the other side of the MEA so that the front surface is in contact with the cathode and the oxidant gas flows through the front surface A cell having a plate-like cathode separator 10 formed with a flow path, a cell stack in which a plurality of the cells are stacked, and the anode separator and cathode separator 10 of at least a predetermined cell of the cell stack. A cooling water flow path 19 through which cooling water formed on at least one of the back surfaces flows, the fuel gas, the oxidant gas, and The cooling water flows in the fuel gas flow path, the oxidant gas flow path, and the cooling water flow path 19 so as not to oppose gravity. [Selection] Figure 2 |