Graphene/silicone/carbon nano tube composite material and preparation method and application thereof

The invention discloses a graphene/silicone/carbon nano tube composite material and a preparation method and application thereof and relates to lithium ion battery silicone cathode materials. The graphene/silicone/carbon nano tube composite material is a silicone-carbon composite material compositing graphene, a silicone material and carbon nano tubes. The preparation method includes: adding graphene powder and the carbon nano tubes into an NMP solution, adopting ultrasonic oscillation to enable uniform dispersion of the graphene powder and the carbon nano tubes, adding nano silicone powder, and adopting ultrasonic oscillation to enable uniform dispersion; drying, stoving and grinding a mixed solution obtained to obtain the graphene/silicone/carbon nano tube composite material. The graphene/silicone/carbon nano tube composite material can serve as a cathode material to be applied in lithium ion batteries and has characteristics of high capacity, high efficiency and good circulating performance. Graphene, the silicone material and the carbon nano tubes are composited through simple steps, volume effect of the silicone material in the process of charging and discharging is improved through graphene and special structure of a novel material, and electroconductivity of the silicone material is improved.