▎ 摘　　要

NOVELTY - A graphene-based silicon-carbon compound negative material preparation material involves stirring liquid acrylonitrile oligomer liquor to form microcyclized liquid acrylonitrile oligomer liquor, and dispersing silicon powder in a solvent. A titanate coupler is added to obtain silicon powder dispersion liquid. The obtained liquors are mixed. Graphite is added and mixed. The solvent is evaporated to obtain a mixture of silicon, graphite and acrylonitrile oligomer. The mixture is preoxidized and grinded to obtain precursor powder. The precursor powder is calcined to obtain electrode material. USE - Method for preparing a graphene-based silicon-carbon compound negative material. ADVANTAGE - The method enables preparing graphene-based silicon-carbon compound negative material with high conductivity, specific capacity and improved circulating performance in simple and inexpensive manner. DETAILED DESCRIPTION - A graphene-based silicon-carbon compound negative material preparation material involves stirring liquid acrylonitrile oligomer liquor at 80-300 degrees C for 8-72 hours to form a microcyclized liquid acrylonitrile oligomer liquor, and dispersing silicon powder in a solvent. A titanate coupler is added and stirred for ultrasonic dispersion to obtain silicon powder dispersion liquid. The obtained liquors are mixed. Graphite is added and uniformly mixed. The solvent is evaporated to obtain a mixture of silicon, graphite and acrylonitrile oligomer. The mixture is preoxidized and grinded at 180-250 degrees C to obtain precursor powder. The precursor powder is calcined at 600-1000 degrees C for 2-18 hours under protection of an inert gas to obtain graphene-based silicon-carbon compound negative electrode material. An INDEPENDENT CLAIM is also included for graphene-based silicon-carbon compound negative material.