▎ 摘　　要

NOVELTY - Preparing wearable graphene supercapacitor involves preparing graphene oxide from natural graphite through an improved hummers method, stirring and mixing graphene oxide and acrylate thickener to prepare slurry for super capacitor printing, printing fabrics including printing of millimeter electrode devices and microelectrode devices, and drying of samples. The printed graphene oxide device is electrochemically reduced to a reduced graphene oxide sample, washed and dried. The printed reduced graphene oxide electrode is used as a current collector. The copper plate is glued to the end of each electrode to ensure good electrical contact with the measurement workstation. The sulfuric acid (H2SO4) is used to deionized water when preparing hydrogel and polymer electrolyte, polyvinyl alcohol (PVA) is added, and heated to 85 degrees C with stirring until the solution is clear. USE - Method for preparing wearable graphene supercapacitor. ADVANTAGE - The method enables to prepare wearable graphene supercapacitor, which has high energy, high power density, good operating safety, long cycle life, low cost and mechanical flexibility, and maintains 97% of the original capacitance after 10000 cycles. DETAILED DESCRIPTION - Preparing wearable graphene supercapacitor involves preparing graphene oxide from natural graphite through an improved hummers method, stirring and mixing graphene oxide and acrylate thickener to prepare slurry for super capacitor printing, printing fabrics including printing of millimeter electrode devices and microelectrode devices, and drying of samples. The printed graphene oxide device is electrochemically reduced to a reduced graphene oxide sample, washed and dried. The printed reduced graphene oxide electrode is used as a current collector. The copper plate is glued to the end of each electrode to ensure good electrical contact with the measurement workstation. The sulfuric acid (H2SO4) is used to deionized water when preparing hydrogel and polymer electrolyte, polyvinyl alcohol (PVA) is added, and heated to 85 degrees C with stirring until the solution is clear. The hydrogel and polymer electrolyte is dropped onto the graphene and cotton electrodes, wet completely, and dried overnight at room temperature. The two electrodes together are pressed to combine the polymer gel electrolyte on each electrode into a thin separation layer to form an integrated device and electrochemical performance of the printed device is measured.