| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polymer electrolyte fuel cell in which the falling of a gas diffusion layer into a gas circulation channel due to deformation is suppressed and good diffusion property of the gas diffusion layer is secured. <P>SOLUTION: Electrode substrates 32, 33 having gas diffusion property are formed on both sides of a polymer electrolyte membrane 10 through catalyst layers 20, 21, and a membrane electrode assembly 50 having a fuel electrode 70 on one side and an oxidant electrode 71 on the other side is formed. The gas circulation channels 62, 63 and the electrode substrates 32, 33 of the membrane assembly 50 are interposed so as to be adjoined by the separators 60, 61 having gas diffusion channels 62, 63 from both sides of the membrane electrode assembly 50. Porous reinforcement members 40, 41 constructed of a conductive material having a higher rigidity than the adjoining electrode substrates 32, 33 are interposed at least on one side between the electrode substrate 32 located on fuel electrode 70 side of the membrane electrode assembly 50 and the separator 60 or between the electrode substrate 33 located on the oxidant electrode side of the membrane electrode assembly 50 and the separator 61. <P>COPYRIGHT: (C)2007,JPO&INPIT |
