Patent ID: 7449132

Claim:
A proton conductive composition comprising: 100 parts by weight of a polyarylene having a sulfonic group; 0.01 to 80 parts by weight of at least one metal catalyst selected from the group consisting of platinum, gold, palladium, rhodium, iridium and ruthenium; and 0.01 to 50 parts by weight of fine particles of a metal oxide and/or fibers of the metal oxide in total; wherein the polyarylene having a sulfonic group comprises: a structural unit represented by the following formula (A) and optionally a structural unit represented by the following formula (B): wherein A is a divalent electron-withdrawing group; B is a divalent electron-donating group or a direct bond; Ar is an aromatic group with a substituent —SO 3 H; m is an integer of 0 to 10; n is an integer of 0 to 10; and k is an integer of 1 to 4; wherein R 1 to R 8 may be the same or different and each are at least one atom or group selected from the group consisting of hydrogen, a fluorine atom, alkyl group, fluorine substituted alkyl group, allyl group, aryl group and cyano group; W is a divalent electron-withdrawing group or a single bond; T is a single bond or a divalent organic group; and p is 0 or a positive integer.