MEMBRANE-ELECTRODE ASSEMBLY FOR POLYMER ELECTROLYTE FUEL CELL AND ITS MANUFACTURING METHOD

• Main Authors: SOMA HIROSHI, IGUCHI MASARU, KANEOKA NOBUYUKI
• Format: Patent
• Language: English
• Published: 21.12.2006
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; CONDUCTORS; ELECTRICITY; INSULATORS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide an MEA having a solid polymer electrolyte membrane having high proton conductivity over a wide temperature range and excelling in hot water resistance, chemical stability, ductility and mechanical strength. SOLUTION: This membrane-electrode assembly for a polymer electrolyte fuel cell is composed by forming an anode electrode on one-side surface of the solid polymer electrolyte membrane and forming a cathode electrode on the other-side surface thereof. The solid polymer electrolyte membrane contains a specific constituent unit having a sulfonate group and contains a polyarylene-based copolymer prepared by introducing a fluorine group and a nitrile group into a main chain. COPYRIGHT: (C)2007,JPO&INPIT