| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the efficiency of dewatering when the water in a gas flow path is dewatered through a gas separator in a fuel cell. <P>SOLUTION: The fuel cell has an electrolyte layer and gas separators 20 and 22 adjoining to the electrolyte layer. The gas separator 20 has a first plane forming a gas flow path in a unit cell 40 in which an oxidation gas used in electrochemical reaction flows, and a second plane forming a cooling gas flow path in which a cooling gas flows. The gas separator 20 includes a dense region provided with a base member comprising a gas impermeable dense material, and a porous region formed for communicating between the gas flow path in the unit cell 40 and the cooling gas flow path. The fuel cell has a dewatering control unit for suppressing the movement of water to gas flowing direction caused by an oxidation gas flow in the porous region compared to the dense region. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
