▎ 摘　　要

NOVELTY - Preparing three-dimensional silicon-carbon composite material comprises mixing nanoscale silicon, silicon nanowires, graphene, and amorphous carbon to form a three-dimensional structure of silicon-based and carbon-based materials, resulting in the three-dimensional silicon-carbon composite material. USE - Preparation method of three-dimensional silicon-carbon composite material used for lithium ion battery used for mobile phone product e.g. portable computer used in electric automobile field. ADVANTAGE - The silicon-carbon composite material utilizes silicon-based coupling agents to connect zero-dimensional nano-silicon, one-dimensional silicon nanowires, and two-dimensional graphene, generating a synergistic effect. This material prevents the agglomeration of nano-silicon, enhances the mechanical strength, reduces expansion, and the porous carbon derived from the organic carbon source further buffers the expansion of silicon during charge-discharge processes. Additionally, graphene, with high electron conductivity, enhances the electron conductivity of the composite material. The porous carbon derived from the organic carbon source alleviates the expansion of silicon-based materials during charge-discharge processes, the organic carbon source, which is an alcohol compound, exhibits good compatibility with the coupling agent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a three-dimensional silicon-carbon composite material.