▎ 摘　　要

NOVELTY - Producing silicon-graphene-carbon nanotube core-shell composite material, comprises (a) surface-modifying the silicon particles with an alkoxysilane-based surface modifier to obtain silicon particles surface-modified with an alkoxysilane-based surface modifier; (b) preparing a silicon-graphene-carbon nanotube core-shell powder coated with silicon particles surface-modified with the alkoxysilane-based surface modifier, graphene and carbon nanotubes on a silicon surface by freeze-drying and pulverizing; (c) obtaining a silicon-graphene-carbon nanotube core-shell composite material powder by ultrasonically dispersing the silicon-graphene-carbon nanotube core-shell powder and lithium titanate in a solvent, followed by freeze-drying and pulverization; and (d) calcining the silicon-graphene-carbon nanotube core-shell composite material powder, cooling it, and mixing it with a fluorine-based polymer to prepare a silicon-graphene-carbon nanotube core-shell composite. USE - The method is useful in producing silicon-graphene-carbon nanotube core-shell composite material for secondary battery (claimed). ADVANTAGE - The method which produce silicon-graphene-carbon nanotube core-shell composite material having higher charge-discharge capacity, high stability including reduction in volume expansion rate, high electrical conductivity; and reduces manufacturing cost of anode agent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for silicon-graphene-carbon nanotube core-shell composite material produced by the above method. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a method for producing silicon-graphene-carbon nanotube core-shell composite material (Drawing includes non-English language text).