| 摘要 |
Durability of a solid polymer fuel cell is improved by suppressing deteri oration of a polymer electrolyte membrane of the solid polymer fuel cell wit hout deteriorating power generation performance. Disclosed is a method for p roducing a polymer electrolyte membrane for a solid polymer fuel cell, where in a polymer electrolyte membrane, in which a transition element or a rare e arth element is uniformly dispersed, is formed by preparing a solution or di spersion of an alkoxide of a transition element or rare earth element having a catalytic power of decomposing a peroxide. This method for producing a po lymer electrolyte membrane for a solid polymer fuel cell is characterized by the following feature (1): when the polymer electrolyte membrane, in which a transition element or a rare earth element is uniformly dispersed, is form ed from a mixed solution which is obtained by preparing a solution of a poly mer electrolyte and then uniformly mixing the solution with the solution or dispersion of an alkoxide, the alkoxide is condensed by hydrolysis, or alter natively by the following feature (2): the polymer electrolyte membrane, in which a transition element or a rare earth element is uniformly dispersed, i s formed by preparing a polymer electrolyte membrane for a solid polymer fue l cell, then uniformly impregnating the polymerelectrolyte membrane with the solution or dispersion of an alkoxide, and then condensing the alkoxide by hydrolysis. |
