Patent ID: 7851557

Claim:
An organic/inorganic composite electrolyte membrane comprising: (a) a sulfonated multiblock copolymer comprising repeating units represented by Formula 1; and (b) inorganic particles capable of collecting moisture, wherein the inorganic particles comprise zeolite, wherein each of A, X and Y independently represents (wherein R is —NO, or —CF 3 ); Z is (wherein Q is —SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M − , or —PO 3 2− 2M − , and M is Na or K); B is G is X; G′ is Z; 0<b/a<1; 0<d/c<1; 1≦n<100; and 1≦n<100.