| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrolyte membrane easily forming a seal part between a membrane electrode assembly and a separator and hardly causing the seal deterioration in a fuel cell (a unit cell) using an electrolyte membrane manufactured by hydrolyzing a fluorine-containing polymer electrolyte membrane precursor having an ion conductive functional group precursor. <P>SOLUTION: The peripheral part of the fluorine-containing polymer electrolyte membrane precursor 1 having the ion conductive functional group precursor is masked with a masking material 2, and then the whole is hydrolyzed. A region where is not masked becomes a first fluorine-containing polymer electrolyte part 3 having an ion conductive functional group, a second fluorine-containing polymer electrolyte part 4 having the ion conductive functional group precursor is left in the periphery of the first fluorine-containing polymer electrolyte part 3. The second fluorine-containing polymer electrolyte part 4 keeps original heat resistance and chemical stability, and stable seal structure is formed between the separator and itself when the unit cell is formed. <P>COPYRIGHT: (C)2008,JPO&INPIT |
