▎ 摘　　要

NOVELTY - The material has a material layer coated with silica and graphite. Granularity of nano-silicon dioxide particle is about 10-100nm. Mass ratio of hexagonal graphene is about 1:5 to 10. USE - Lithium ion battery nano-crystalline silicon/graphene cathode material. ADVANTAGE - The material has high conductivity, and can control size of silica particle by adopting liquid phase reduction algorithm. The material realizes effective graphene and nano-silicon combination operation so as to obtain stable silicon-carbon material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a lithium ion battery nano-crystalline silicon/graphene cathode material preparing method.