▎ 摘　　要

NOVELTY - Manufacture of supercapacitor involves (A) preparing a binder by mixing poly(3,4-ethylenedioxythiophene) and poly(styrene sulfonate) with water, (B) preparing an electrode active material by adding reduced graphene oxide to the binder, (C) adding iron chloride to the electrode active material, and (D) applying the electrode active material to the substrate. USE - Manufacture of supercapacitor used for mobile phone and electric vehicle. ADVANTAGE - The method is environmentally-friendly, and enables manufacture of supercapacitor with excellent improved energy storage capacity and storage performance.