▎ 摘　　要

NOVELTY - Manufacture of graphene-based supercapacitor electrode involves forming (12) an intercalated coke or coal compound comprising domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers, exfoliating (14) and separating the hexagonal carbon atomic interlayers to produce (16) isolated graphene sheets, and shaping and drying the graphene suspension. The coke or coal powder (10) is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, and natural coal mineral powder. USE - Manufacture of graphene-based supercapacitor electrode used in battery for hybrid electric vehicle e.g. car. ADVANTAGE - The method efficiently provides supercapacitor electrode having high areal density, apparent density, electrode thickness, volumetric capacitance and volumetric energy density, and prevents graphene sheet from re-stacking together. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of graphene-based supercapacitor electrode from coke or coal powder, which involves forming an intercalated coke or coal compound comprising domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers with an interlayer spacing, by an electrochemical intercalation procedure which is conducted in an intercalation reactor, exfoliating and separating the hexagonal carbon atomic interlayers from the intercalated coke or coal compound using an ultrasonication, thermal shock exposure, or mechanical shearing treatment, to produce isolated graphene sheets which are dispersed in a liquid medium to form a graphene suspension, and shaping and drying the graphene suspension into the supercapacitor electrode which is porous. The electrode has a specific surface area greater than 200 m2/g. The reactor comprises a liquid solution electrolyte comprising an intercalating agent, a working electrode comprises coke or coal powder as an active material in ionic contact with the liquid solution electrolyte, and a counter electrode in ionic contact with the liquid solution electrolyte. A current is imposed upon the working electrode and the counter electrode at a current density for sufficient time for effecting electrochemical intercalation of the intercalating agent into interlayer spacing The coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, and natural coal mineral powder. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of isolated graphene sheets. Coke or coal powder (10) Intercalated coke or coal compound formation process (12) Exfoliated coke formation process (14) Isolated graphene sheet production process (16)