▎ 摘　　要

NOVELTY - Preparing graphene oxide-based flexible supercapacitor involves preparing positive plate, negative plate and polyvinyl alcohol (PVA)/potassium hydroxide (KOH) gel solution, bonding one side of the positive plate and one side of the negative plate through the PVA/KOH gel solution. The other side of the positive plate and the other side of the negative plate are each bonded with a PET substrate through the PVA/KOH gel solution to form a PET substrate graphene oxide-based flexible supercapacitor. The preparation method of PVA/KOH gel solution includes dissolving polyvinyl alcohol in distilled water, adding potassium hydroxide, and mixing to obtain product. USE - Method for preparing graphene oxide-based flexible supercapacitor used in the functional polymer material and electrochemical field. ADVANTAGE - The method has excellent flexibility.