| abstract |
The present invention relates to a polymer comprising a terminal sulfonic acid group, a polymer electrolyte and a fuel cell employing the same, a polymer comprising a terminal sulfonic acid group having high ion conductivity, excellent structural stability, and no damage even under low humidity conditions, and economical efficiency. The present invention relates to a polymer electrolyte and a fuel cell employing the same.n n n The polymer according to the invention has a substituent in the side chain containing a terminal sulfonic acid group of the formulan n n <Formula 1>n n n n n n n n In Formula 1, n represents a number of 1 to 5. |