▎ 摘　　要

NOVELTY - Preparation of graphene/graphene nanoribbon composite hydrogel comprises dispersing graphite oxide in deionized water, carrying out ultrasonic dispersion to obtain stable graphene oxide dispersion, adding reducing agent, ultrasonically dispersing to obtain mixture, dispersing aqueous graphene oxide nanoribbons into the mixture, stirring to form homogeneous dispersion and standing at certain temperature in oil bath. USE - Method for preparing graphene/graphene nanoribbon composite hydrogel used as ideal carrier material and electrode material for new energy devices e.g. supercapacitor (claimed). ADVANTAGE - The method is simple, easy control, low-cost and environment-friendly.