▎ 摘　　要

NOVELTY - Preparing a sulfur-doped manganese(II,III) oxide quantum dot/graphene composite material involves subjecting a divalent manganese ion, graphene oxide and a vulcanizing agent to an oil bath heating reaction in a water-ethanol mixed solvent system. USE - The method is useful for preparing a sulfur-doped manganese(II,III) oxide quantum dot/graphene composite material, which is useful for preparing a battery anode material (claimed). ADVANTAGE - The method is capable of simply preparing the sulfur-doped manganese(II,III) oxide quantum dot/graphene composite material under controlled conditions with excellent lithium storage capacity and rate performance. The battery anode material prepared by the composite material has current density of 2000 mA/g, initial discharge capacity of 688-345 mAh/g, Coulomb efficiency of 78.1-66.4%, and discharge capacity of 676-312 mAh/g after 100 charge and discharge cycles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the sulfur-doped manganese(II,III) oxide quantum dot/graphene composite material prepared by the above method.