| 摘要 |
The invention provides a method for fabricating a reinforced polymer electrolyte membrane having greatly enhanced durability against a dry/wet cycle or freeze/defreeze cycle. In a method for fabricating a reinforced polymer electrolyte membrane according to the present invention, (1) a polymer electrolyte precursor is caused to infiltrate into a sheet-like porous reinforcing member, in the absence of a solvent, at a temperature higher than the melting point of the sheet-like porous reinforcing member, or (2) the polymer electrolyte precursor is first caused to infiltrate into the sheet-like porous reinforcing member, in the absence of a solvent, at a first temperature lower than the melting point of the sheet-like porous reinforcing member, and then heat-treated at a second temperature higher than the melting point of the sheet-like porous reinforcing member; thereafter, the polymer electrolyte precursor is transformed into a polymer electrolyte by hydrolyzing the polymer electrolyte precursor.
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