| abstract |
The present invention relates to (i) an oligomeric solid acid and (ii) a polymer electrolyte membrane using the same, and more specifically, (i) an oligomeric solid acid macromolecule having an ion conductive end group at its end and (ii) an ion conductive end group The present invention relates to a polymer electrolyte membrane having ion conductivity complemented by keeping swell to the minimum necessary for ion conduction to suppress swelling and to uniformly distribute the dendrimer solid acid.n n n The polymer electrolyte membrane of the present invention minimizes the crossover of methanol by using a polymer matrix that suppresses swelling by minimizing the number of ion conductive end groups, and has an ion conductive end group on the surface thereof, and thus does not easily flow out of the oligomeric solid acid. By uniformly distributing the macromolecules to significantly improve the ion conductivity, there is an effect of continuously showing excellent ion conductivity even in a non-humidity condition. |