▎ 摘　　要

NOVELTY - Preparing graphene nickel-cobalt ferricyanide nanocomposite material involves fully dissolving graphite, NaNO3 and KMnO4 under ice bath conditions in a certain amount of concentrated H2SO4. The above mixture is kept at 35 degrees C for 45 minutes. Slowly added deionized water and a certain concentration of H2O2, after washing with an appropriate amount of dilute HCl and deionized water multiple times to obtain a graphene oxide solution. An appropriate amount of the graphene oxide aqueous solution and hydrazine hydrate are taken with the same mass as the graphene oxide aqueous solution, mix them, and then perform certain treatments to obtain a reduced graphene (rGO) solution. The C4H6NiO4 4H2O and C4H6CoO4 4H2O are added to a certain amount of reduced graphene (rGO) aqueous solution and fully stirred to obtain a precursor solution. The two mixed solutions of two portions of n-butanol, isooctane. USE - Method for preparing graphene nickel-cobalt ferricyanide nanocomposite material. ADVANTAGE - The rGO/Ni-COHCF nanocomposite is used as the electrode material of supercapacitor for electrochemical testing, and found that the rGO/Ni-CoHCF nanocomposite material as a cathode material for sodium ion batteries also exhibits very excellent electrochemical performance and has a good application prospect. DETAILED DESCRIPTION - Preparing graphene nickel-cobalt ferricyanide nanocomposite material involves fully dissolving graphite, NaNO3 and KMn O4 under ice bath conditions in a certain amount of concentrated H2SO4. The above mixture is kept at 35 degrees C for 45 minutes. Slowly added deionized water and a certain concentration of H2O2, after washing with an appropriate amount of dilute HCl and deionized water multiple times to obtain a graphene oxide solution. An appropriate amount of the graphene oxide aqueous solution and hydrazine hydrate are taken with the same mass as the graphene oxide aqueous solution, mix them, and then perform certain treatments to obtain a reduced graphene (rGO) solution. The C4H6NiO4 4H2O and C4H6CoO4 4H2O are added to a certain amount of reduced graphene (rGO) aqueous solution and fully stirred to obtain a precursor solution. The two mixed solutions of two portions of n-butanol, isooctane, and cetyltrimethylammonium bromide are prepared and masses of these three substances are in a certain proportion and are recorded as solution one and solution two. The precursor solution containing Ni2+ and Co2+ is added to solution and added K3(Fe(CN)6) to solution. The two mixtures are quickly mixed, stirred, allowed to stand for 40 hours, thoroughly washed with deionized water and absolute ethanol, and then dried under vacuum at 60 degrees C for 12 hours to obtain graphene-nickel-cobalt ferricyanide nanocomposite (rGO/NiCoHCF).