▎ 摘　　要

NOVELTY - Preparation of asymmetric supercapacitor involves preparing dispersion of Prussian blue having different central metal atoms and reduced graphene formed using graphene oxide based on the Hummers method, forming composite film of reduced graphene and Prussian blue having layered stack structure by vacuum filtration method using the dispersion, and forming asymmetric supercapacitor using the composite film. USE - Preparation of asymmetric supercapacitor (claimed). ADVANTAGE - The method enables simple and economical preparation of asymmetric supercapacitor. The stacking of graphene-based electrode during the preparation is suppressed.