▎ 摘　　要

NOVELTY - Preparation of low-defect graphene ribbon sponge using carbon nanotube sponge, involves reacting hydrogen/argon carrier gas with carbon source and catalyst to form carbon nanotube sponge, adding potassium permanganate to mixed acid of sulfuric acid and phosphoric acid to form strong oxidizing mixed solution, immersing carbon nanotube sponge in oxidizing mixed solution to obtain graphene sponge, placing graphene sponge in hydrochloric acid solution, carrying out carbon dioxide supercritical drying, mixing graphene sponge and hydrazine hydrate to obtain final product. USE - Method for preparing low-defect graphene ribbon sponge using carbon nanotube sponge. ADVANTAGE - The method enables preparation of low-defect graphene ribbon sponge with high dispersion and mechanical properties, excellent compression performance and high specific surface area. DETAILED DESCRIPTION - Method for preparing low-defect graphene ribbon sponge using carbon nanotube sponge, involves (I) dissolving catalyst ferrocene in liquid carbon source 1,2-dichlorobenzene to obtain catalyst/carbon source solution, injecting the catalyst/carbon source solution into preheating zone of the tube furnace, reacting the hydrogen/argon carrier gas with the carbon source and catalyst into the reaction zone of tube furnace to form carbon nanotube sponge, (II) adding potassium permanganate to mixed acid of sulfuric acid and phosphoric acid, ultrasonically dispersing to form strong oxidizing mixed solution, (3) immersing the carbon nanotube sponge in strong oxidizing mixed solution, leaving still at room temperature, vacuuming, removing the carbon nanotube sponge filled with the solution, leaving still to obtain graphene sponge, (4) adding double oxygen droplets into ice water, cooling the graphene sponge to room temperature until bubbles are not generated, then placing the graphene sponge in hydrochloric acid solution, removing impurities, using deionized water to replace hydrochloric acid until the pH range reaches 5-8, using anhydrous ethanol to replace deionized water, (5) carrying out carbon dioxide supercritical drying of graphene ribbon sponge, (6) mixing graphene sponge and hydrazine hydrate in reaction vessel to obtain chemically reduced low defect graphene sponge.