| abstract |
Provided is a catalyst body that has high oxygen reduction catalytic activity without using platinum and can form a three-phase structure of a catalyst, a polymer electrolyte, and a reaction gas with a high degree of freedom. Two or more types of heteroatoms containing nitrogen atoms are introduced on the surface of fibrous carbon, the content ratio of carbon atoms to heteroatoms is 94: 6 to 86:14, and nitrogen relative to nitrogen atoms A catalyst body comprising a catalyst carrier having a heteroatom content ratio other than atoms of 0.5 to 1.4, wherein a metal is coordinated to an introduced heteroatom. . [Selection figure] None |