▎ 摘　　要

NOVELTY - The carbon-supported multi-element single-atom metal catalyst has a carrier carbon that is nano-carbon spheres which is one of porous carbon or graphene. A multi-element single atom includes multiple noble metals and multiple non-noble metal single atoms. Each metal single atom is uniformly dispersed on the surface of the carrier nano-carbon sphere. The noble metal is selected from platinum, gold or palladium, and the non-noble metal is selected from cobalt, ferrous, manganese, copper or nickel. USE - Carbon-supported multi-element single-atom metal catalyst for catalyzing oxygen reduction reaction in fuel cell. ADVANTAGE - The carbon-supported multi-element single-atom metal catalyst has controllable components, stable structure, uniform distribution, multiple catalytic activity sites and can be directly applied to the fuel cell and so on, has good catalytic activity in the catalytic oxygen reduction reaction field of the fuel cell. The obtained carbon-loaded 8-element single-atom metal catalyst is directly used as direct sodium borohydride fuel cell cathode catalyst, which can realize the maximum output power density of 523.13 mW.cm-2 at 60 degrees C. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the carbon load multielement single atom metal catalyst. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic diagram of the high-angle annular dark-field image-spherical aberration corrected scanning transmission electron microscope (HAADFSTEM) image of a carbon-supported 8-member single-atom catalyst.