▎ 摘　　要

NOVELTY - The method involves adding carbon nanotubes to the graphene oxide dispersion liquid, and dispersing to obtain graphene-carbon nanotube composite hydrogel. The graphene carbon nanotube composite hydrogel is transferred to the mold and the mold is fixed on the quick-freezing platform. The liquid nitrogen is added to the liquid nitrogen tank at a constant rate to freeze the graphene carbon nanotube composite hydrogel. A graphene oxide carbon nanotube composite hydrogel block is obtained with a sandwich structure, and the quick-freezing platform is transferred to the refrigerator to continue freezing. The quick-freezing platform is transferred to a freeze dryer for vacuum drying, and demolded to obtain a graphene oxide carbon nanotube composite aerogel with a sandwich structure. The graphene oxide carbon nanotube composite aerogel with a sandwich structure is reduced by using hydrazine hydrate to obtain a graphene carbon nanotube composite aerogel with a sandwich structure. USE - Method for preparing graphene carbon nanotube composite aerogel with sandwich structure. ADVANTAGE - The carbon nanotube has a good reinforcing effect on the graphene sheet layer. The sandwich structure plays a role of shear enhancement and bridging enhancement between the graphene sheet and the carbon nanotubes, so that the composite aerogel has excellent mechanical properties. The reduction process is simple, and a good reduction effect is achieved without destroying the structure of the composite material. The clamping structure obtained by the compression performance of the composite material is improved. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the microscopic topography of the graphene-carbon nanotube composite aerogel with a ribbed structure. (Drawing includes non-English language text)