| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell stack that achieves favorable generation performance by providing a cooling mechanism in each group of a plurality of cells. <P>SOLUTION: A fuel cell stack 1 comprises: a first polymer electrolyte membrane 4a; and a pair of electrode layers that are formed on both sides of the first polymer electrolyte membrane 4a and that have a first anode gas diffusion layer 7a, a first cathode gas diffusion layer 7b, a first anode catalyst layer 6a, and a first cathode catalyst layer 6b. A cooling flow passage is provided in each group of a plurality of laminated unit fuel cells. The pair of electrodes are arranged in order in a lamination direction of the unit fuel cells. In the unit fuel cell adjacent to a first cooling flow passage 10a, the first anode gas diffusion layer 7a on a side where the first cooling flow passage 10a is arranged has higher thermal conductivity than the first cathode gas diffusion layer 7b on a side where the first cooling flow passage 10a is not arranged. <P>COPYRIGHT: (C)2013,JPO&INPIT |
