| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell that improves power generation performance by preventing the flooding. <P>SOLUTION: A membrane-electrode assembly 12 includes an anode electrode 15 to which a fuel gas is supplied, a cathode electrode 16 to which an oxidizer gas is supplied, an electrolyte membrane 17 arranged between both electrodes 15, 16 and made of a conductive polymer material including an ion exchange group for conducting protons from the anode electrode 15 to the cathode electrode 16, and binder layers 18, 19 including the ion exchange group and connecting between both electrodes 15, 16 and the electrolyte membrane 17. Concentration of the ion exchange group at a cathode electrode 16 side is set up to be higher than that of the ion exchange group at an anode electrode 15 side regarding the electrolyte membrane 17 and/or the binder layers 18, 19. <P>COPYRIGHT: (C)2010,JPO&INPIT |
