Figure 5From: Morphology and property control of NiO nanostructures for supercapacitor applicationsThe charge–discharge tests, rate capability, and long-term stability. Charge–discharge tests of (a) NiO NT and (b) NiO NR electrodes in 1 M KOH at different constant current densities are shown. (c) Specific capacitance at different constant current densities shows the rate capability of NiO NT and NiO NR. (d) The capacity retention in a long-term cycling test (500 cycles) at a current density of 125 and 80 A/g for NiO NT and NiO NR, respectively. Both nanostructures show stable cycling performance.Back to article page