Effect of Applied Graphene Nanosheets (Electrode) from the Electrolysis Process and Nanofiber-Based Separator...

Energy storage devices are an important area for future technology that should be used to achieve green energy storage. The supercapacitor is one form of energy storage that has continuously improved in performance. The main parts of a supercapacitor are the electrode and electrolyte parts. The electrode has been improved by the use of graphene material, and electrolytes have been improved by nanofiber separators. The graphene nanosheets (GNs) from the electrolysis process have generated nanoparticles with the smallest diameter of 20.62 nm, with 486.2836 m²/g surface area. The nanofiber separator can be produced from an electrospinning technique that generates a fiber of 170 nm in diameter and can satisfactorily absorb 6 M KOH liquid electrolyte. The GN electrodes and nanofiber sheet electrodes (6 M KOH) combined to be a supercapacitor that fabricated high levels of performance at 150 F at 0.6 A/g. Therefore, the GN electrodes and nanofiber sheet separators with 6 M KOH (electrolyte) achieved moderate supercapacitor performance.