▎ 摘　　要

NOVELTY - A lithium ion battery anode material comprises nano copper sulfide graphene composite powder. USE - Lithium ion battery anode material. ADVANTAGE - The anode material improves reversible capacity and coulombic efficiency of the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a lithium ion battery anode material, which involves putting glutathione as a sulfur source in an aqueous solvent, adhering copper ion (Cu2+) on reduced graphene oxide surface, hydrothermally reacting copper ion with glutathione to form copper sulfide nanoparticles distributed in the graphene oxide, reducing graphene oxide to reduced graphene oxide for forming reduced graphene oxide doped nano copper sulfide.