▎ 摘　　要

NOVELTY - Preparation of graphene-carbon nanotube composite involves adding graphene and metal catalyst to solvent, obtaining catalyst precursor solution, spraying the obtained catalyst precursor solution at a reaction furnace, and performing pyrolysis of the resultant sprayed aerosol through the reaction furnace. USE - Preparation of graphene-carbon nanotube composite used for supercapacitor (claimed) and electrode material for secondary battery. ADVANTAGE - The method economically and efficiently provides graphene-carbon nanotube composite having excellent electrical conductivity.