A kind of preparation method of activated carbon for supercapacitor
A technology of supercapacitor and activated carbon, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of limiting supercapacitor power density, low electrolyte diffusion and migration rate, etc., to improve practical potential and application. effect of value
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Embodiment 1
[0018] Put 5Kg of coconut shell activated carbon in a 100L reaction kettle, add 50L of distilled water, heat to 50°C, and stir for 4 hours to obtain an aqueous dispersion of activated carbon; take 450g of graphene dry powder and 45g of 9-anthracene formic acid, disperse them in 10L of ethanol, and heat to 40°C and stirred for 1 hour to obtain an ethanol dispersion of graphene; dropwise add the ethanol dispersion of graphene into the water dispersion of activated carbon at a rate of 10mL / min, wherein the ethanol dispersion of graphene and the water dispersion of activated carbon The liquid mass ratio is 20:1, stirring; after the dropwise addition, the temperature is raised to 80°C, and stirred and distilled for 8 hours; the heating and stirring are stopped, and the temperature is naturally lowered to room temperature; the obtained slurry is separated from solid and liquid to obtain a precursor; The body was heated up to 600° C. under the protection of nitrogen atmosphere in a tu...
Embodiment 2
[0023] Put 3.5Kg of petroleum coke activated carbon in a 100L reaction kettle, add 50L of ethanol, heat to 30°C, and stir for 36 hours to obtain an ethanol dispersion of activated carbon; take 250g of graphite milk and 50g of benzoic acid, disperse them in 1L of ethanol, and heat to Stir at 40°C for 1 hour to obtain the ethanol dispersion of graphene; drop the ethanol dispersion of graphene into the ethanol dispersion of activated carbon at a rate of 1mL / min, wherein the ethanol dispersion of graphene and the mass of the ethanol dispersion of activated carbon The ratio is 6.59:1, stirring; after the dropwise addition, the temperature is raised to 50°C, and stirred and distilled for 36 hours; the heating and stirring are stopped, and the temperature is naturally lowered to room temperature; the obtained slurry is separated from solid and liquid to obtain a precursor; Under the protection of argon atmosphere in a tube furnace, the temperature was raised to 500° C., kept for half ...
Embodiment 3
[0025] Put 4Kg of coconut shell modified activated carbon in a 100L reactor, add 50L of N-methylpyrrolidone, heat to 70°C, and stir for 72 hours to obtain an N-methylpyrrolidone dispersion of activated carbon; take 4000g of graphene dry powder graphite oxide, 200g Disperse naphthoic acid in 5L ethanol, heat to 40°C, and stir for 1 hour to obtain an ethanol dispersion of graphene; add the ethanol dispersion of graphene to the N-methylpyrrolidone dispersion of activated carbon dropwise at a rate of 100mL / min Among them, the mass ratio of the ethanol dispersion of graphene to the active carbon N-methylpyrrolidone dispersion is 42:1, stirring; after the dropwise addition is completed, the temperature is raised to 70°C, and stirring and distillation are carried out for 72 hours; heating and stirring are stopped, and naturally Cool down to room temperature; separate the solid and liquid from the obtained slurry to obtain a precursor; raise the temperature of the precursor to 500° C. ...
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