▎ 摘 要
NOVELTY - Nanoporous carbon material grafted with graphene having carbon content of greater than 90 wt.%, heteroatom content of less than 5 wt.%, content of inorganic impurities of less than 0.5 wt.%, pore volume of 0.5-2 cm3/g, helium density of 1-2.5 g/cm3, packing density of 0.1-0.5 g/cm3, zero charge point of 7-14, and graphene content of 0.5-5 wt.%, is claimed. The graphene is in the form of sheets with length greater than 10 nm embedded and homogeneously distributed within material. The material has specific surface area of 750-2500 m2/g and electrical conductivity of greater than 1.6 S/cm. USE - The nanoporous carbon material grafted with graphene is useful as a supercapacitor electrode (claimed). ADVANTAGE - The nanoporous carbon material grafted with graphene: has a graphene content of 0.5-5 wt.%, preferably 1.5-5 wt.%, a carbon content of greater than 90 wt.%, preferably greater than 95 wt.%, a content of inorganic impurities of less than 0.5 wt.%, preferably less than 0.1 wt.%, a pore volume of 0.5-2 cm3/g, preferably greater than 1 cm3/g, a helium density of 1-2.5 g/cm3, preferably 2-2.5 g/cm3, a packing density of 0.1-0.5 g/cm3, preferably 0.2-0.4 g/cm3, a zero charge point of 7-14, preferably 8-10, a specific surface area of 750-2500 m2/g, preferably 1200-2500 m2/g, an electrical conductivity of greater than 1.6 S/cm, preferably greater than 3 S/cm, and a volume of mesopores of 0.2-1 cm3/g with an average mesoporous size of 2-20 nm and a volume of micropores of 0.2-1 cm3/g, preferably has a volume of mesopores of greater than 0.5 cm3/g with an average size of 4-10 nm and a volume of micropores of greater than 0.5 cm3/g (claimed); is cost-effective; and exhibits excellent electrochemical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the nanoporous carbon material grafted with graphene, comprising mixing 3-44 wt.% resorcinol with 5-30 wt.% formaldehyde, 3-22 wt.% methanol, 36-87 wt.% water and 0.1-1 wt.% graphene oxide, adding a catalyst until the pH of the resulting mixture is adjusted to 3-7, homogenizing the obtained mixture, heat treating at atmospheric pressure, in air atmosphere and at temperature of 50-100 degrees C for 1-96 hours, obtaining an organic xerogel doped with graphene oxide, and heat treating the obtained organic xerogel at a temperature of 800-1100 degrees C for at least 60 minutes to obtain a carbon xerogel and reducing the graphene oxide to graphene.