▎ 摘　　要

NOVELTY - Preparing boron nitride nanosheet-graphene composite material comprises (a) measuring graphene oxide dispersion and hexagonal boron nitride nanosheet powder respectively, dispersing in deionized water, stirring, ultrasonically treating the stirred dispersion to obtain a dispersion containing few-layer boron nitride nanosheets and graphene oxide, and (b) loading the dispersion liquid into the polytetrafluoroethylene as the reactor of the inner lining, and adding into the oven reaction, adding the colloid after the reaction into a freeze dryer and drying to constant weight. USE - The method is useful for preparing boron nitride nanosheet-graphene composite material. ADVANTAGE - The obtained product has high quality and low cost, at the same time, the preparation method provided has a controllable compound ratio, simple operation, and easy realization of industrialized production.