▎ 摘　　要

NOVELTY - The preset amount of anode active material and graphite oxide catalyst are dissolved in water and dried to obtain granular particles. The granular particles are dispersed in the organic solvent in a reaction container, filtered, washed and dried to obtain carbon powder. The sintering treatment is performed for the carbon powder in an inert gas atmosphere to obtain crystalline anode active material. A graphene layer is coated on the surface of crystalline anode active material for producing anode material. USE - Method of preparing anode material for lithium ion secondary battery of portable electronic device. ADVANTAGE - The power supply capacity and charging and discharging performance of the battery are improved by using anode material having high electrical conductivity. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical illustration of the X-ray diffraction (XRD) pattern of anode material.