| abstract |
The present invention relates to a novel sulfonated block copolymer and an electrolyte membrane using the same, particularly a sulfonated block copolymer comprising a repeating unit represented by the formula (1) containing benzimidazole, and a strong acid to the sulfonated block copolymer. It relates to a doped sulfonated block copolymer electrolyte membrane, and an organic-inorganic composite electrolyte membrane blended with the sulfonated block copolymer and a conductive inorganic material.n n n The electrolyte membrane according to the present invention can be used at a high temperature of 100 ~ 200 ℃, has an improved water temperature conductivity at a high temperature has the effect that can be used as an ion exchange membrane of a high temperature fuel cell.n n n Polybenzimidazole, block copolymer, electrolyte membrane, fuel cell, ion exchange membrane, conductive inorganic |