▎ 摘　　要

NOVELTY - Preparing graphene-carbon black mixture comprises providing a solid salt comprising a base salt and an auxiliary salt, placing the solid salt in a reaction vessel for dehydration, subjecting the solid salt to a heat treatment to heat the solid salt to a molten state and to a target temperature, passing the hydrocarbon gas into the solid salt in the molten state, forming hydrocarbon bubbles in the solid salt in the molten state, and allowing the hydrocarbon bubbles to react in the solid salt in the molten state. USE - The method is useful for preparing graphene-carbon black mixture. ADVANTAGE - The graphene-carbon black mixture is synergistically active. The method is economical and environmentally friendly, which has excellent application performance and wide application range. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation device of graphene-carbon black mixture, comprising a heating device, a reaction vessel, a bubble generating device, a hydrocarbon gas storage device, a product purging device and a product collection device, the reaction vessel is arranged in the heating device, and a solid salt accommodating cavity is arranged in the reaction vessel, the air inlet end of the bubble generating device is communicated with the hydrocarbon gas storage device, the gas outlet end of the bubble generating device is arranged at the bottom of the solid salt accommodating cavity, the product purging device is arranged above the solid salt accommodating cavity, and connected with the product collection device for purging the graphene-carbon black mixture produced in the reaction vessel into the product collection device. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the graphene-carbon black mixture preparation method (Drawing includes non-English language text).