PROTON CONDUCTIVE FUEL CELL

• Main Author: KIMOTO KYOJI
• Format: Patent
• Language: English
• Published: 29.09.2000
• Edition: 7
• 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; WORKING-UP

PROBLEM TO BE SOLVED: To reduce manufacturing cost, improve energy efficiency, facilitate assembling of a cell, and to maintain performance for a long time by using a perphloro sulfonate film as solid polyelectrolyte. SOLUTION: A perphloro sulfonate film is constituted with repeating units represented by formulas I and II. Ratio of numbers of two kinds of repeating units, namely repeating units represented by formula I/repeating units represented by formula II, is 1.5-10. The perphloro sulfonate film is produced by co-polymerizing tetraphloro ethylene and a perphlorovinyl ether monomer represented by CF2=CFO(CF2)3SO2F, forming it in 100-300 μm in thickness, and performing hydrolysis. This perphlorovinyl ether monomer does not cause cyclization reaction during co-polymerization, high ion exchange capacity can be realized keeping mechanical strength, and energy efficiency of a battery is improved.