▎ 摘　　要

NOVELTY - An electrode electrochemical preparation method involves preparing carboxylated graphene electrode, and preparing carboxylated graphene-polyaniline electrode. The carboxylated graphene electrode is prepared by polishing glassy carbon electrode to a mirror surface, followed by ultrasonically washing, drying at room temperature, stripping carboxylated graphene aqueous suspension by ultrasonic treatment, dropping to glassy carbon electrode surface and drying. USE - Method for electrochemically preparing carboxyl graphene-polyaniline electrode that is utilized as supercapacitor electrode material (claimed). ADVANTAGE - The method enables electrochemically preparing carboxyl graphene-polyaniline electrode with specific capacitance of 792.5 F/g, better electrochemical stability and specific capacity of 86% of initial value after 1000 times of continuous charge and discharge in a simple, highly effective and convenient manner without utilizing oxidants, thus avoiding influence of oxidant during preparation. DETAILED DESCRIPTION - An electrode electrochemical preparation method involves preparing carboxylated graphene electrode, and preparing carboxylated graphene-polyaniline electrode. The carboxylated graphene electrode is prepared by polishing glassy carbon electrode to a mirror surface, followed by ultrasonically washing, drying at room temperature, stripping carboxylated graphene aqueous suspension by ultrasonic treatment, dropping to glassy carbon electrode surface and drying. The carboxylated graphene-polyaniline electrode is prepared by utilizing three-electrode system, carboxylated graphene electrode as working electrode, silver/silver chloride as reference electrode, platinum wire electrode as counter electrode and mixed aqueous solution of sulfuric acid and aniline monomer as electrolyte, followed by fixed working electrode scanning, drying and modifying to obtain carboxyl graphene-polyaniline electrode. An INDEPENDENT CLAIM is also included for a use of a carboxyl graphene-polyaniline electrode as supercapacitor electrode material.