| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell which prevents formed water from staying, and in which reaction efficiency is improved. <P>SOLUTION: This is provided with power generation cells having an electrolyte membrane 2, and a separator 3 opposed to the power generation cells, and on the surface of the power generation cells 10 side of the separator 3, a gas passage in which a plurality of groove-like flow passages in which a fuel gas or an oxidizer gas flows are formed in a stripe state is formed, and at least a part of a cross sectional area of the groove-like flow passages 1a, 1b continuously increases or decreases in the length direction of the groove-like flow passages 1a, 1b, while the cross sectional areas of the neighboring groove-like flow passages 1a, 1b are reversely changed. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
