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

摘要

A carbon-based material according to the present invention contains dopant atoms of metal and non-metal such as nitrogen. In a radial distribution function obtained by Fourier transform of a K-edge EXAFS of the metal, a ratio of “A” to “B” is equal to or more than 4.0, wherein “A” denotes an intensity of the highest one of peaks around a distance equal to a coordinate bond length between atoms of the metal and the non-metal and “B” denotes an intensity of the highest one of peaks around a distance equal to a metallic bond length between atoms of the metal. Note that when the metal is platinum, in a radial distribution function obtained by Fourier transform of an LIII-edge EXAFS of the platinum, a ratio of “A” to “B” is equal to or more than 4.0.

主权项

1. A carbon-based material prepared by doping a base made of graphite or amorphous carbon particles with atoms of metal and non-metal, the non-metal including at least one of nitrogen, boron, sulfur, and phosphorus,
when the metal is not platinum, in a radial distribution function obtained by Fourier transform of a K-edge extended X-ray absorption fine structure (EXAFS) of the metal, a ratio of “A” to “B” being equal to or more than 4.0, wherein “A” denotes an intensity of a highest one of peaks around a distance equal to a coordinate bond length between atoms of the metal and the non-metal and “B” denotes an intensity of a highest one of peaks around a distance equal to a metallic bond length between atoms of the metal, and when the metal is platinum, in a radial distribution function obtained by Fourier transform of an LIII-edge extended X-ray absorption fine structure (EXAFS) of the platinum, a ratio of “A” to “B” being equal to or more than 4.0, wherein “A” denotes an intensity of a highest one of peaks around a distance equal to a coordinate bond length between atoms of the platinum and the non-metal and “B” denotes an intensity of a highest one of peaks around a distance equal to a metallic bond length between atoms of the platinum.