▎ 摘　　要

NOVELTY - The production method involves providing silicon nanoparticles, removing any oxide layer from each respective silicon nanoparticle to yield clean silicon nanoparticles, and forming a polyaniline layer over each respective clean silicon nanoparticle to yield polyaniline functionalized particles. The graphene oxide sheet is bound to polyaniline layer of each respective polyaniline functionalized particle to yield of green particles and polyaniline layer of each respective green particle is carbonized to composite particles, in which respective composite particle has graphene outer layer. USE - Production method of graphene-composite material for use in lithium ion cell (all claimed). ADVANTAGE - Improves the electric conductivity resulting in better cycle life performance than that of pure silicon nanoparticles. Exhibits enhanced electrochemical performance as anodes in lithium-ion batteries, in terms of cycling stability, rate performance, and Coulombic efficiency. Provides high electronic conductivity, high mechanical strength, and large pore volume to accommodate the volume expansion of the silicon by incorporation of graphene sheets. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a preparation method of carbon-silicon composite material; and (2) a lithium ion cell. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic illustration of method for synthetic procedure of graphene-carbon-silicon composites.