▎ 摘　　要

NOVELTY - Preparing silicon-carbon composite material comprises mixing silicon-based particles with asphalt to obtain first particles, dispersing the first particles and activated carbon material in a polymer glue solution, stirring evenly and drying, calcining dried product in a non-oxidizing atmosphere and introducing carbon source gas for chemical vapor deposition to obtain final prodcut. USE - The silicon-carbon composite material is useful as cathode of lithium-ion battery (claimed). ADVANTAGE - The method: has simple process; is low cost, suitable for large-scale production. The silicon-carbon composite material: has high battery ratio, high tap density, cycle stability, excellent overall performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing silicon-carbon composite material by above method.