CARBON-BASED MATERIAL, ELECTRODE CATALYST, ELECTRODE, GAS DIFFUSION ELECTRODE, ELECTROCHEMICAL DEVICE, FUEL BATTERY, AND PROCESS FOR PRODUCING CARBON-BASED MATERIAL

• Main Authors: KITADE, YUUKI, KAMAI, RYO, NAKANISHI, SHUJI, SUZUKI, YUYA, HAYASHI, TAKAO
• Format: Patent
• Language: English; French; Japanese
• Published: 09.01.2014
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The carbon-based material according to the present invention has been doped with non-metallic atoms, e.g., nitrogen atoms, and metallic atoms. In a radial distribution function obtained by subjecting the K-edge EXAFS of the metallic atoms to Fourier transform, the ratio of the intensity (A) for the maximum peak appearing around the coordination bond distance between a metallic atom and a non-metallic atom to the intensity (B) for the maximum peak appearing around the metallic-bond distance between metallic atoms, A/B, is 4.0 or higher. However, if the metallic atoms are platinum atoms, the A/B ratio in a radial distribution function obtained by subjecting the LIII-edge EXAFS of the platinum atoms to Fourier transform is 4.0 or higher. La présente invention concerne un matériau à base de carbone qui a été dopé avec des atomes non métalliques, par ex., des atomes d'azote et des atomes métalliques. Dans une fonction de distribution radiale obtenue par soumission de la spectrométrie EXAFS sur les bords de la raie K des atomes métalliques à une transformation de Fourier, le rapport entre l'intensité (A) du pic maximum apparaissant aux alentours de la distance de liaison de coordination entre un atome métallique et un atome non métallique et l'intensité (B) du pic maximum aux alentours de la distance de la liaison métallique entre les atomes métalliques, A/B, est de 4,0 ou plus. Cependant, si les atomes métalliques sont des atomes de platine, le rapport A/B dans une fonction de distribution radiale obtenue par soumission de la spectrométrie EXAFS du bord LIII à une transformation de Fourier est de 4,0 ou plus.