HIGH-DENSITY HIGH-RIGIDITY GRAPHENE POROUS CARBON MATERIAL AND PREPARATION METHOD AND APPLICATION THEREOF

摘要

Disclosed are a high-density high-rigidity graphene porous carbon material and a preparation method and application thereof. The method comprises the following steps: 1. original colloidal sol preparation: adding a graphene-based component or a mixture of a graphene-based component and auxiliary components into a solvent for dispersion to obtain an original colloidal sol for preparing the graphene porous carbon material; 2. graphene-based gel preparation: placing the original colloidal sol prepared in Step 1 into a reaction container, reacting for 0.1-100 hours at a temperature of 20-500°C to obtain the graphene-based gel; and 3: high-density high-rigidity graphene porous carbon material preparation: drying the graphene-based gel at a temperature of 0-200°C, increasing the temperature to 100-3600°C in anoxic atmosphere for conducting thermal treatment for 0.1-100 hours, and/or reacting for 0.1-50 hours at a temperature of 200-2000°C by adopting an activation reaction method. Compared with the prior art, the prepared graphene-based material has the advantages of high density, high rigidity, abundant pores, large specific surface area and stable pore structure.