Figure 6
From: High-performance solid-state supercapacitors based on graphene-ZnO hybrid nanocomposites
Supercapacitance properties of graphene-ZnO hybrid in all-solid supercapacitors. (a) Fabricated solid-state supercapacitor device-based graphene-ZnO hybrid electrode. (b) CV curves of the graphene-ZnO hybrid electrode at different scan rates from 10 to 150 mV s−1. (c) Galvanostatic charge–discharge curves of the graphene-ZnO hybrid electrode at different current densities. (d) Variation of the specific capacitance of the graphene-ZnO hybrid electrode as a function of cycle number.