▎ 摘　　要

NOVELTY - Preparing ionic liquid-based biological nanofiber conductive film, comprises (i) drying degummed silk fibroin and adding into ionic liquid, and heating and dissolving to obtain a silk fibroin solution, (ii) dispersing graphene in aqueous solution to obtain graphene dispersion liquid, (iii) heating, mixing and stirring the silk fibroin solution and the graphene dispersion liquid, and ultrasonically treating to obtain a uniform silk fibroin/graphene spinning solution, (iv) spinning the silk fibroin/graphene spinning solution to obtain a silk fibroin/graphene fiber film, and (v) spray spinning the silk fibroin/graphene fiber film and introducing through coagulation bath, and immersing in flowing ice water bath, taking out, and washing and drying to obtain silk fibroin/graphene composite spray-spun nanofiber film. USE - The biological nanofiber conductive film is useful in biological nanosensors, energy harvesting, chemical filters, medical materials, tissue engineering, ecological bionics and special environment field (claimed). ADVANTAGE - The biological nanofiber conductive film: has excellent fracture strength and greater ductility, and high thermal stability and electrical conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for ionic liquid-based biological nanofiber conductive film prepared by above method.