▎ 摘　　要

NOVELTY - Preparing cobalt single atomic electro-catalyst coordinated with distorted octahedron comprises (i) mixing the cobalt source, fluorine source and graphene oxide suspension liquid to obtain a precursor solution, performing hydrothermal reaction on the precursor solution to obtain a reaction product, and (ii) drying the reaction product to obtain the columnar product, carrying out high temperature nitridation reaction on the columnar product using chemical vapor deposition method to obtain a cobalt single atomic electro-catalyst coordinated by distorted octahedral. USE - The cobalt single-atom electro-catalyst coordinated with distorted octahedron is used as the catalyst for generating water by four-electron oxygen reduction reaction (claimed). ADVANTAGE - The catalyst has excellent four electronic oxygen reduction electrochemical performance, high catalytic activity, strong selectivity, stable performance, and coordination environment of the active site can be regulated. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for cobalt single atomic electro-catalyst coordinated by distorted octahedron prepared by above-mentioned method.