Carbon-coated transition metal atom cluster oxygen reduction catalyst and preparation method and use thereof

The invention discloses a highly active oxygen reduction catalyst and a preparation method and a use thereof, which belong to the field of catalysts. The preparation method of the highly active oxygenreduction catalyst comprises the following steps: (1) preparing required raw materials into ethanol solution; (2) obtaining precipitate by heating, stirring, aging, centrifugating and drying; and (3)obtaining the oxygen reduction catalyst through calcining in a protective atmosphere. The preparation method of the oxygen reduction catalyst provided by the invention has the advantages as follows:there is a wide source of raw materials, and the cost of raw materials is low; the preparation method is simple and easy to operate; and the equipment needed for catalyst preparation is simple, and there is no pollution and 'three industrial wastes' in the production process. The prepared catalyst has good catalytic oxygen reduction performance, many catalytic active sites and high catalytic efficiency, and thus, has good a