▎ 摘　　要

NOVELTY - In situ preparation of a composite film of graphene/carbon nanotube comprises uniformly mixing ferrocene and sulfur, placing the mixture on a front end of a reactor, placing polycrystal nickel pieces at the center of the reactor, and sealing the reactor; introducing hydrogen/argon mixed gas at 100-200/200-400 mL/minute while heating to 1100-1150 degrees C, and adjusting the flow to 100-400/800-2000 mL/minute; heating to 80-110 degrees C for volatizing, reacting for 5-15 minutes, and stopping heating; and drawing nickel piece out, and cooling to room temperature at 5-20 degrees C/second. USE - Method for the in situ preparation of a composite film of graphene/carbon nanotube (claimed). ADVANTAGE - The method produces a composite film having large area, controllable thickness, and high conductivity. DETAILED DESCRIPTION - In situ preparation of a composite film of graphene/carbon nanotube comprises: (A) uniformly mixing ferrocene and sulfur at a mass ratio of 58-116:1, placing the mixture on a front end of a reactor, placing polycrystal nickel pieces with a purity of 99.5%, a thickness of 0.1 mm, and an area of 1-100 cm2 at the center of the reactor, and sealing the reactor; (B) introducing hydrogen/argon mixed gas into the reactor at 100-200/200-400 mL/minute while heating the center of the reactor to 1100-1150 degrees C, and adjusting the flow of the hydrogen/argon mixed gas to 100-400/800-2000 mL/minute; (C) heating the ferrocene and the sulfur to 80-110 degrees C for volatizing, delivering the volatized gas to the reactor through the hydrogen/argon mixed gas, reacting for 5-15 minutes, and stopping heating; and (D) closing hydrogen gas, adjusting the flow of the argon gas to 100-200 mL/minute, drawing nickel piece out, and cooling to room temperature at 5-20 degrees C/second.