▎ 摘　　要

NOVELTY - Electro catalysts for reduction of oxygen to hydrogen peroxide comprises 70-95 wt.% nitrogen-doped reduced graphene oxide film and 5-30 wt.% penta metal oxides, and nitrogen-doped reduced graphene oxide film has a porous structure, The penta metal oxide is grown on the nitrogen-doped reduced graphene oxide film with a sheet-like morphology, The general formula of the five metal oxides is M1M2M3M4M5Ox, Where M1, M2, M3, M4 and M5 are different from each other and are independently copper, iron, manganese, niobium, cobalt, molybdenum, vanadium, nickel and/or zinc. USE - Electro-catalyst for preparing hydrogen peroxide by oxygen reduction. Uses include but are not limited to synthesis, organic pollutant degradation, semiconductor industry and mining. ADVANTAGE - The electro-catalyst exhibits a higher hydrogen peroxide unit area yield, selectivity and stability. The preparation method does not need high temperature roasting, noble metal, and can obtain with porous structure, the metal active component is dispersed on the surface of the carbon material by sheet shape, and has excellent catalytic performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparing electro-catalyst for preparing hydrogen peroxide by oxygen reduction.