▎ 摘　　要

NOVELTY - Preparing silicon/amorphous carbon/graphene lithium ion battery anode material involves (i) mixing ethyl orthosilicate, alkaline catalyst and deionized water, magnetically stirring for 3 plus minus 0.3 hours, and performing centrifugal drying to obtain nano-silica particles, mixing nano-silica particles and magnesium powder, adding heat removal agent, heating at 650 plus minus 50 degrees C under inert gas and heat-preserving for 3 plus minus 0.3 hours to obtain nano-silicon particles, adding silicon nanoparticles and glucose to deionized water, stirring at 60 plus minus 10 degrees C for 5 plus minus 0.5 hours, and heating at 550 plus minus 50 degrees C under an inert gas to maintain for 3 plus minus 0.3 hours to obtain carbon-coated nano-silicon particles, and (ii) mixing carbon-coated nano-silicon particles with graphene oxide, adding deionized water, stirring for 12 plus minus 1 hours, freeze-drying, heating at 300 plus minus 50 degrees C under inert gas to maintain for 1 plus minus 0.1 hours and heating at 900 plus minus 50 degrees C to maintain for 2 plus minus 0.2 hours to obtain the product. USE - The method is useful for preparing silicon/amorphous carbon/graphene lithium ion battery anode material. DETAILED DESCRIPTION - Method for preparing silicon/amorphous carbon/graphene lithium ion battery anode material involves (i) mixing ethyl orthosilicate, alkaline catalyst and deionized water in a volume ratio of 1:(2 plus minus 0.2):(7 plus minus 0.5), magnetically stirring for 3 plus minus 0.3 hours, and performing centrifugal drying to obtain nano-silica particles, mixing nano-silica particles and magnesium powder in a weight ratio of 8:(7 plus minus 0.5), adding heat removal agent, heating at 650 plus minus 50 degrees C under inert gas and heat-preserving for 3 plus minus 0.3 hours to obtain nano-silicon particles, adding silicon nanoparticles and glucose to deionized water in a weight ratio of 1:(10 plus minus 1), stirring at 60 plus minus 10 degrees C for 5 plus minus 0.5 hours, and heating at 550 plus minus 50 degrees C under an inert gas to maintain for 3 plus minus 0.3 hours to obtain carbon-coated nano-silicon particles, and (ii) mixing carbon-coated nano-silicon particles with graphene oxide in a weight ratio of 1:(6 plus minus 0.5), adding deionized water, stirring for 12 plus minus 1 hours, freeze-drying, heating at 300 plus minus 50 degrees C under inert gas to maintain for 1 plus minus 0.1 hours and heating at 900 plus minus 50 degrees C to maintain for 2 plus minus 0.2 hours to obtain the product.