▎ 摘　　要

NOVELTY - Method for preparing monoatomic iron cluster oxygen reduction catalyst, involves (i) preparing precursor by using 1-3 g zinc nitrate, 60-120 mg graphene oxide, and 4-16 g 2-methylimidazole as raw materials, using 10-40 ml water and 60-90 ml methanol as solvents, completely dispersing the raw materials in the solvent, and stirring at room temperature for 16-30 hours, (ii) collecting precursors by collecting the brown powder by centrifugation, washing the powder, and drying, (iii) performing high temperature pyrolysis treatment using a tubular furnace on the brown powder and ferrocene to obtain a black powder, (iv) performing acid extraction treatment by placing the black powder in a hot 0.1-1 M dilute sulfuric acid solution and soaking for 16-28 hours, and (v) collecting final product by washing the black product and collecting by suction filtration, and drying in an oven to obtain the monoatomic iron cluster oxygen reduction catalyst. USE - The method is used for preparing monoatomic iron cluster oxygen reduction catalyst for hydrogen fuel cells in oxygen reduction reaction (claimed) in electrochemical energy device such as zinc-air battery. ADVANTAGE - The single atom iron cluster catalyst has rich and exposed iron-nitrogen cluster and excellent catalytic performance. The method has simple operation, good controllability, high efficiency, good repeatability, can be prepared in large scale, and provides a reliable sample preparation method for the cathode catalyst of the fuel cell. The catalyst reduces reaction activation energy, improves the reaction selectivity, and reduces the oxygen into water by electrochemical reaction. It uses cheap raw material, reduces the production cost of the catalyst, uses the front body that is normal temperature synthesis, improves convenience, reduces energy loss, and exhibits excellent oxygen reducing performance, so it has the possibility of replacing expensive platinum catalyst. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the use of the monoatomic iron cluster oxygen reduction catalyst for hydrogen fuel cell in oxygen reduction reaction, where the catalyst reduces the reaction activation energy and improves the reaction selectivity.