Patent ID: 7727654
Filing Date: 2010-06-01
Classification: C08J,H01B,H01M,Y02E,Y02P

Abstract:
1. A membrane-electrode assembly, utilized for solid polymer electrolyte fuel cells, comprising: an anode electrode; a cathode electrode; and a solid polymer electrolyte membrane, the anode electrode and the cathode electrode disposed on opposite sides of the solid polymer electrolyte membrane, wherein the solid polymer electrolyte membrane contains an aromatic polymer which includes a constitutional unit expressed by formula (1) below, a constitutional unit expressed by formula (2-1) or (2-2) below and a constitutional unit expressed by formula (3) below, in the formula (1), Y represents at least a group selected from the group consisting of —CO—, —SO Z represents independently a single bond, or at least a group selected from the group consisting of —O—, —S—, —(CH Ar represents an aromatic group having a substituent expressed by —SO in the formulas (2-1) and (2-2), X represents a divalent group or a single bond; R in the formula (3), R