▎ 摘　　要

NOVELTY - Preparation of graphene-silicon carbon anode material, involves (i) adding micron-grade silicon powder into a sand mill, adding graphene solution, continually sanding to obtain graphene-nano-silicon mixture, spray-drying to obtain graphene-nano-silicon spherical particles, (ii) subjecting graphene-nano-silicon spherical particles into heat-treatment, evenly dispersing nano-particles in asphalt, obtaining carbon microspheres with graphene-nano-silicon particles dispersed uniformly inside through high-temperature reaction, (iii) carbonizing and mixing with other carbon materials. USE - Preparation method of graphene-silicon carbon anode material for lithium ion battery. ADVANTAGE - The silicon carbon anode material has high initial coulomb efficiency, stable cycling performance, high compaction density, stable electrode structure excellent, and excellent electrical conductivity and thermal conductivity. DETAILED DESCRIPTION - Preparation method of graphene-silicon carbon anode material for lithium ion battery, involves (i) adding micron-grade silicon powder into a sand mill, then adding graphene solution, continually sanding to obtain graphene-nano-silicon mixture, then spray-drying to obtain graphene-nano-silicon spherical particles, (ii) subjecting the graphene-nano-silicon spherical particles into heat-treatment, evenly dispersing heat-treated graphene-silicon nano-particles in asphalt, then obtaining carbon microspheres with graphene-nano-silicon particles dispersed uniformly inside through high-temperature reaction, (iii) carbonizing the carbon microspheres obtained in step (ii), and then mixing with other carbon materials to obtain graphene-silicon carbon anode material.