▎ 摘　　要

NOVELTY - Preparation of graphene-carbon nanotube three-dimensional structural composite material involves taking graphene microsheet, performing ultrasonic-assisted dispersion in liquid carbon source to obtain precursor solution, heating pre-heating zone at 300-600 degrees C and main reaction zone at 1000-1300 degrees C of dual-zone vertical chemical vapor deposition device, purging furnace chamber at 400-25000 mL/minute argon for 20 minutes, introducing 400-25000 mL/minute argon and 400-2500 mL/minute hydrogen, spraying with 0.08-0.25 mL/minute precursor solution after 5 minutes and reacting for 30-1000 minutes. USE - Method for preparing graphene-carbon nanotube three-dimensional structural composite material. ADVANTAGE - The method is not limited by shape of substrate surface, has good controllability and reproducibility, and is suitable for mass production. DETAILED DESCRIPTION - Preparation of graphene-carbon nanotube three-dimensional structural composite material comprises taking graphene microsheet, performing ultrasonic-assisted dispersion in liquid carbon source to obtain precursor solution with 0.05-1.0 wt.%% graphene content, heating pre-heating zone at 300-600 degrees C and main reaction zone at 1000-1300 degrees C of dual-zone vertical chemical vapor deposition device, purging furnace chamber at 400-25000 mL/minute argon for 20 minutes, introducing 400-25000 mL/minute argon and 400-2500 mL/minute hydrogen continuously, spraying with 0.08-0.25 mL/minute precursor solution after 5 minutes, reacting for 30-1000 minutes, cooling pre-heating zone and main reaction zone to 200 degrees C, stopping filling of hydrogen and cooling to room temperature.