▎ 摘　　要

NOVELTY - The preparation of graphene-based hybrid aerogel involves (i) preparing graphene solution, ultrasonically treating with a cell disruption instrument, adjusting the pH of the solution to 8.0 with sodium hydroxide, adding polyethyleneimine to graphene oxide solution, stirring, mixing, charging the mixed solution into a container, sealing, placing in an oil bath, reacting, washing, freeze-drying to obtain a graphene aerogel, (ii) preparing sodium silicate solution, adding sodium silicate solution to graphene-based aerogel, shaking, draining the supernatant, washing, and freeze-drying. USE - Preparation of graphene-based hybrid aerogel (claimed). ADVANTAGE - The method enables the preparation of graphene-based hybrid aerogel by simple process under mild reaction conditions with high mechanical stability, and controllable internal pore structure. DETAILED DESCRIPTION - The preparation method of graphene-based hybrid aerogel involves (i) preparing 2-8 mg ml-1 graphene solution, ultrasonically treating with a cell disruption instrument for 0.5 hour, adjusting the pH of the solution to 8.0 with sodium hydroxide, adding polyethyleneimine with a molecular weight of 600 to graphene oxide solution according to graphene and polyethyleneimine ratio of 4:1-1:4, stirring, uniformly mixing, charging the mixed solution into a container, sealing, placing in an oil bath at 90 degrees C, reacting for 2-8 hours, washing for several times, freeze-drying for 24-48 hours to obtain a graphene aerogel, (ii) preparing sodium silicate solution with concentration of 10-50 mmol l-1, adding sodium silicate solution to graphene-based aerogel, shaking with a shaker for 15-120 minutes, draining the supernatant, washing for several times to obtain silica-loaded graphene-based hybrid hydrogel, and freeze-drying. An INDEPENDENT CLAIM is included for graphene-based hybrid aerogel which comprises an interconnected pore structure having pore size of 2-80 microns.