▎ 摘　　要

NOVELTY - The composite material has nano copper oxide (CuO) particles that are attached on a single reduced graphene oxide (rGo) sheet. A mass ratio of nano CuO and rGO is 100:3-5, and a size of the nano particle is 6-10nm. The copper salt, the hydroxide and the graphene oxide are used as raw materials, and an ethyl alcohol is used as solvent. USE - Copper oxide/reduced graphene oxide (CuO/rgo) composite material with high electrocatalytic oxygen reduction performance. ADVANTAGE - The raw material is cheap, and the composite material is simple and easy to prepare and operate. The post treatment process of the composite material simplified, and the reaction parameters are able to be controlled easily. The energy consumption is reduced. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of CuO/rgo composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical representation of the volt-ampere curve of the titanium dioxide (TiO2)/rGO composite material.