▎ 摘　　要

NOVELTY - A modified graphene supercapacitor electrode material comprises graphene, diisostearyl titanate, titanium acetylacetonate, lithium carbonate, nickel nitrate, deionized water, isopropyl alcohol, acetone, furfural and diethylenetriamine. The electrode material is obtained by preparing graphene titanium composite material using graphene, diisostearyl titanate, and titanium acetylacetonate, and adding to homogeneous solution comprising lithium carbonate, nickel nitrate, deionized water, furfural, and diethylenetriamine, heating, cooling to room temperature, ultrasonically processing and washing. USE - Modified graphene supercapacitor electrode material (claimed). ADVANTAGE - The modified graphene supercapacitor electrode material has excellent chemical stability, electroconductivity, and mechanical properties, high specific capacitance and energy density, long service life, and is environmentally-friendly and economical. DETAILED DESCRIPTION - A modified graphene supercapacitor electrode material comprises 90-100 pts. wt. graphene, 4-6 pts. wt. diisostearyl titanate, 11-13 pts. wt. titanium acetylacetonate, 10-12 pts. wt. lithium carbonate, 6-9 pts. wt. nickel nitrate, 100-120 pts. wt. deionized water, 60-80 pts. wt. isopropyl alcohol, 20-25 pts. wt. acetone, 18-20 pts. wt. furfural and 3-5 pts. wt. diethylenetriamine. The electrode material is obtained by mixing isopropanol and acetone, adding graphene, ultrasonically processing for 10-15 minutes, adding diisostearyl titanate and titanium acetylacetonate, ultrasonically processing for 50-60 minutes, irradiating using UV light for 10-15 minutes, vacuum filtering to obtain graphene-titanium composite material, adding lithium carbonate and nickel nitrate into deionized water, stirring, adding furfural and diethylenetriamine, ultrasonically processing for 10-12 minutes, stirring for 40-50 minutes, to obtain homogeneous solution, transferring the obtained homogeneous solution and composite materials in PTFE reactor, heating to 90 degrees C for 2-3 hours, cooling to room temperature, ultrasonically processing, processing with 70% ethanol solution, and finally washing with water for 10 minutes.