▎ 摘　　要

NOVELTY - Silicon-containing composite material comprises silicon particles, phytic acid, oxidized graphene and carbon nanotubes, where the silicon particles surface is coated with phytic acid grain, forming silicon-silicon-acid grain with graphene oxide, carbon nano-tube formed by crosslinking 3D network structure. USE - The composite material including silicon is used in the battery cathode active material. ADVANTAGE - The method is quick, simple and feasible. The composite material has high charge-discharge capacity and good circulation stability, is capable of writing, printing characteristics, has very good application prospect in energy field, and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing silicon-containing composite material, comprising mixing the silicon powder and phytic acid, ball-milling silicon-acid grain, adding carbon nano-tube to the graphene oxide solution, ultrasonically processing, adding silicon-acid grain, after ultrasonication, freezing and drying to obtain the product.