▎ 摘　　要

NOVELTY - Cathode material, is claimed. The material is a ternary silver-cuprous oxide-reduced graphene oxide (Ag-Cu2O-RGO) composite material prepared by a one-pot water bath method. The ternary Ag-Cu2O-RGO composite material is a structure in which silver nanoparticles grow on the surface of cuprous oxide crystal, and silver-cuprous oxide is supported by RGO nanosheet. USE - The cathode material is useful for lithium ion battery. ADVANTAGE - The material is prepared by a simple one-pot water bath method, which is used as various physical property tests, electrochemical electrodes, and battery performance tests. The method obtains high-stability cathode material through simple operation steps and mild reaction conditions, and surface modification by anchoring silver nanoparticles and utilizing the overlapping of the Fermi level of metallic silver material with the conduction band of the cuprous oxide electrode enhances the flow of electrons, and enables the cathode material to have good cycling performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing cathode material, comprising (i) under the condition of constant temperature water bath, dissolving polyvinylpyrrolidone, trisodium citrate dihydrate and copper(II) nitrate trihydrate in the graphene oxide aqueous solution, (ii) adding sodium hydroxide aqueous solution dropwise into the above solution, and uniformly stirring to obtain a mixed solution 1, (iii) dropwise adding disodium EDTA aqueous solution into mixed solution 1, and continuously stirring uniformly to obtain the mixed solution 2, and (iv) adding silver nitrate aqueous solution into mixed solution 2 and uniformly stirring, centrifuging obtained mixed solution, washing multiple times with distilled water and ethanol, and drying in a vacuum drying oven.