▎ 摘　　要

NOVELTY - Hydrophilic graphene-carbon nanotube composite lightweight elastic airgel, is claimed. The production of airgel comprises forming graphene into a large pore structure, allowing the graphene to adsorb on the surface of carbon nanotubes, and bonding with polymer-coated carbon nano-material to form a three-dimensional network of basic structural unit, where the airgel has density of 0.5-350 mg/cm3, static water contact angle of less than 90 degrees , pore size of 50 nm to 500 mu m, compressible rate of 30-80%, and conductivity of 0.05-100 S/m. USE - Used as hydrophilic graphene-carbon nanotube composite lightweight elastic airgel. ADVANTAGE - The method is simple, green and environmentally-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing the hydrophilic graphene-carbon nanotube composite lightweight elastic airgel, comprising (i) dispersing 1 pt. wt. graphene oxide in 10-4000 pts. wt. water to form a graphene oxide dispersion; (ii) dispersing 1 pt. wt. carbon nanotube in 5-4000 pts. wt. graphene oxide dispersion to obtain graphene oxide-carbon nanotube dispersion; (iii) adding 1 pt. wt. 0.01-80% polymer solution into 0.001-4000 pts. wt. graphene oxide-carbon nanotube dispersion liquid to obtain a three-phase composite dispersion; (iv) subjecting the three-phase composite dispersion to freeze-drying or supercritical drying, to obtain hydrophilic graphene oxide-carbon nanotube aerogel; and (v) carrying out chemical reduction or high temperature reduction of the obtained aerogel.