The Study and Application of Nickel-based GNS/Plant Fiber in Flexible Asymmetric Supercapacitor

Asymmetric supercapacitor is assembled by two slightly different electrode's materials, and the operating voltage can be enhanced and the capacities and energy densities also be dramatically improved. Owing to the possess of the higher power density than conventional batteries, it has become a potential application in the energy storage device. In this study, we have combined the excellent electric properties of graphene with the flexibility of the plant fibers into a flexible composite electrode, and finally assembled into an asymmetric supercapacitor. Cyclic voltammetry (CV) and charge/discharge current (GC) have been investigated to determine the electrochemical properties in order to identify the optimal conditions to synthesize the flexible electrode in asymmetric supercapacitor.