POLYELECTROLYTE FOR FUEL CELL AND MANUFACTURING METHOD THEREFOR, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL

• Main Author: TAKESAWA MANABU
• Format: Patent
• Language: English
• Published: 16.07.2009
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INSULATORS; 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; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

PROBLEM TO BE SOLVED: To provide a polyelectrolyte for a fuel cell which polyelectrolyte retains superior heat resistance, acid resistance, and proton conductivity even under a non-humidified or low-humidified high-temperature operational condition, a manufacturing method for the polyelectrolyte, and a membrane electrode assembly and a fuel cell using the polyelectrolyte. SOLUTION: The polyelectrolyte for the fuel cell at least has a structure: (-CF2-CF(M)CH2-CF2-), where M denotes any one of CF3, CF2H, and CFH2. The polyelectrolyte contains a fluorinated polymer to which a basic compound is added, and a hydrogen ion conductor. The basic compound is a nitrogen-containing heterocyclic compound in which at least two hydrogen atoms are replaced, and the fluorinated polymer is bridged by the basic compound. COPYRIGHT: (C)2009,JPO&INPIT