▎ 摘　　要

NOVELTY - Preparation of N-potassium acetate acridone modified graphene-based composite material involves (A) adding graphene oxide powder to deionized water, ultrasonically-dispersing to obtain graphene oxide dispersion, (B) adding N-acetate acridone to potassium hydroxide solution to obtain N-potassium-acetate acridone solution, (C) adding N-potassium acetate acridone solution to graphene oxide dispersion, ultrasonically-dispersing, pouring into an autoclave containing PTFE lining, hydrothermally reacting in an oven, washing and freeze-drying. USE - Preparation of N-potassium acetate acridone modified graphene-based composite material used for preparing working electrode for supercapacitor (all claimed). ADVANTAGE - The method produces N-potassium acetate acridone modified graphene-based composite material with high specific capacitance and excellent cycle stability, and produces supercapacitors with improved electrochemical characteristics. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) N-potassium acetate acridone modified graphene-based composite material; and (2) preparation of working electrode for supercapacitor, which involves mixing N-potassium acetate acridone modified graphene-based composite material, conductive carbon black and PTFE dispersion, adding absolute ethanol, ultrasonically-dispersing, uniformly coating on the nickel net under an infrared baking lamp after the color of the solution is an ink color, drying, and compressing with a tablet machine.