▎ 摘　　要

NOVELTY - Graphene oxide powder is dissolved to obtain a solution, which is functionalized to activate graphene oxide. A conductive polymer is dissolved to obtain a solution, which is mixed with the functionalized graphene oxide solution to react conductive polymer and activated graphene oxide and obtain a precursor solution of graphene oxide/polyaniline nanofiber composite. The solvent in the precursor solution is removed to obtain a precursor powder of composite. The powder is reduced, separated and dried to obtain a graphene/polyaniline nanofiber composite. USE - Preparation of graphene/polyaniline nanofiber composite for use as electrode material in manufacture of supercapacitors (all claimed). ADVANTAGE - The method enables preparation of graphene/polyaniline nanofiber composites having excellent conductivity and structural stability. The composite provides supercapacitors having high capacitance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) supercapacitor consisting of electrode (I), electrode (II), current collection component (I), current collection component (II), a diaphragm, and an electrolytic solution. Electrode (I) is arranged on current collection component (I) and electrode (II) is arranged on current collection component (II). The electrodes are arranged opposite to each other at intervals by a diaphragm. The electrodes, current collection components, and diaphragm are arranged in the electrolytic solution. The electrodes comprise the graphene oxide/polyaniline composite. The graphene/polyaniline nanofiber composite comprises graphene and conductive polymer connected by an amide group via a chemical bond; and (2) preparation of supercapacitor, which involves providing the composite material as an electrode raw material, dispersing the composite material and an additive in a solvent to obtain a graphene/polyaniline nanofiber sol, removing solvent from the sol, preparing composite films, separately arranging on the surfaces current collection components to form two electrodes, spacing current collection component (I) provided with electrode (I) from current collection (II) provided with electrode (II), oppositely arranging the current collection components on the two sides of diaphragm, filling into a housing, injecting the electrolytic solution into the housing, and encapsulating the housing.