Multi-layer graphene carbon nanotube three-dimensional carbon material-filled nanometer silicon composite material and preparation method thereof

The invention belongs to a material technique, and particularly relates to a multi-layer graphene carbon nanotube three-dimensional carbon material-filled nanometer silicon composite material and a preparation method thereof. The preparation method comprises the following steps of preparing a nanometer silicon ethanol solution; preparing a multi-layer graphene-multi-wall carbon nanotube three-dimensional carbon material; mechanically stirring, thus uniformly mixing nanometer silicon and the multi-layer graphene-multi-wall carbon nanotube three-dimensional carbon material, and enabling one part of the nanometer silicon to enter nanometer holes of the multi-layer graphene-multi-wall carbon nanotube three-dimensional carbon material; centrifuging, spattering the nanometer silicon into the nanometer holes of the multi-layer graphene-multi-wall carbon nanotube three-dimensional carbon material, and generating a multi-layer graphene-multi-wall carbon nanotube three-dimensional carbon material-filled nanometer silicon composite material; magnetically separating the multi-layer graphene-multi-wall carbon nanotube three-dimensional carbon material from the excessive nanometer silicon ethanol solution. The prepared multi-layer graphene carbon nanotube three-dimensional carbon material-filled nanometer silicon composite material has good application value on electrode materials and energy-storage materials.