| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an efficient method of manufacturing membrane-electrode assembly. <P>SOLUTION: A membrane-electrode assembly 1 comprising a rectangular polymer electrolytic membrane 2, a pair of catalyst layers sandwiching the polymer electrolytic membrane excluding the peripheral part of the polymer electrolytic membrane, and a pair of gas diffusion layers 3 provided on the paired catalyst layers is installed in a fuel cell with sandwiched between a pair of separators each having passages A, C for the reaction gas concaved on a gas diffusion layer contact region. The reaction gas passages A, C in the gas diffusion layer contact regions have a serpentine shape where they extend from a first side of the polymer electrolytic membrane 1 toward a third side 2c opposed to the first side along a second side 2b adjacent to the first side while inverting in the direction along the first side 2a from the upstream side toward the downstream side. Reinforcing portions 4 reinforcing the polymer electrolytic membrane are formed in the areas corresponding to the second side of the peripheral part of the polymer electrolytic membrane 2 and the fourth side 2d opposed to the second side and not formed at least in the areas corresponding to the third side 2c of the peripheral part of the polymer electrolytic membrane 2. <P>COPYRIGHT: (C)2009,JPO&INPIT |
