SOLID ELECTROLYTE FUEL CELL COMPOSITE OXIDE, SOLID ELECTROLYTE FUEL CELL BINDER, SOLID ELECTROLYTE FUEL CELL ELECTRODE, SOLID ELECTROLYTE FUEL CELL COLLECTOR MEMBER, SOLID ELECTROLYTE FUEL CELL, SOLID ELECTROLYTE FUEL CELL STACK, AND MANUFACTURING METHOD OF SOLID ELECTROLYTE FUEL CELL COMPOSITE OXIDE MIXTURE

• Main Authors: KAMIYAMA TOSHIHIKO, SAKAI TOSHIYUKI
• Format: Patent
• Language: English
• Published: 10.11.2011
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To provide a fuel cell electrode improved in electrode efficiency by providing a member with which a triple-phase interface can be easily formed although reducing costs as further as possible, while using a perovskite-type composite oxide as an electrode constituent material.SOLUTION: The present invention relates to a solid electrolyte fuel cell composite oxide comprised of a composite oxide mixed powder obtained by mixing at least two kinds of perovskite-type (ABO) composite powders, wherein the first composite oxide powder has a granularity distribution only in a range of 1 to 10 μm and the coefficient of variation (indicated by average diameter (μm)/standard deviation (μm)×100) of the distribution is less than 40%, and further, wherein the second composite oxide powder has a granularity distribution (frequency diameter) in the area of at least 1 to 10 μm and also has the granularity distribution (frequency diameter) in the range of 10 to 100 μm, namely, the compound oxide powder having two frequency diameters at least in the granularity distribution is used.