▎ 摘　　要

NOVELTY - The preparation method of single-crystal silicon carbide/graphene composite nanofiber involves (1) preparing carbon containing gel, drying and grinding into carbon containing dry gel powder, heating, vacuumizing, filling protective gas, heating, heat-preserving, sintering, and cooling to obtain silicon carbide nanofibers, and heating the silicon carbide nanofibers, heat-preserving, continuously vacuumizing with high reliability vacuum pump under high vacuum and high temperature conditions, and removing silicon from surface of silicon carbide nanofibers. USE - Preparation method of single-crystal silicon carbide/graphene composite nanofibers used in nano optoelectronic device and flexible electronic device, and for use as lithium ion battery electrode materials, and energy storage and nanocomposite materials. ADVANTAGE - The method enables preparation of single-crystal silicon carbide/graphene composite nanofiber with excellent performance and high product purity, by simple and environmentally-friendly process. DETAILED DESCRIPTION - The preparation method of single-crystal silicon carbide/graphene composite nanofiber involves (1) preparing carbon-containing gel by sol-gel method, drying and grinding into carbon containing dry gel powder, placing the dried gel powder on a bottom of a corundum crucible, placing in a high temperature tubular furnace, vacuumizing, filling protective gas, heating, heat-preserving, sintering and cooling to room temperature, finding that the crucible filled with green silicon carbide nanofibers to obtain silicon carbide nanofibers of zinc blended structure, and (2) heating the silicon carbide nanofibers obtained in the step (1), heat-preserving at high temperature, continuously vacuumizing with high reliability vacuum pump under high vacuum and high temperature conditions, and removing silicon from surface of silicon carbide nanofibers.