▎ 摘　　要

NOVELTY - Silicon-carbon composite material comprises silicon/graphene composite material and MXene, where the silicon or graphene nano-particles are compounded on the MXene sheet layer. USE - The composite material is useful in lithium-ion battery (claimed), electronic device electric traffic, aerospace, military and medicine fields. ADVANTAGE - The silicon-carbon composite material can greatly improve the cycle stability and power performance of the lithium-ion battery, and inhibits the silicon volume expansion, which is good for keeping the structure of the cathode active material complete, the structure stability, electrochemical performance and electron/ion migration characteristics. The preparation method has simple process, easy operation, suitable for large-scale production and popularization. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparation method of silicon-carbon composite material; and (2) lithium-ion battery.