Figure 7 | Scientific Reports

Figure 7

From: Hierarchical Core/Shell NiCo2O4@NiCo2O4 Nanocactus Arrays with Dual-functionalities for High Performance Supercapacitors and Li-ion Batteries

Figure 7

(a) rate capabilities of the NiCo2O4@NiCo2O4 and NiCo2O4 NCA electrodes at different current densities; (b) cyclic performance of the NiCo2O4@NiCo2O4 and NiCo2O4 NCA supercapacitor electrodes at a current density of 2 A g−1; (c) Nyquist plots of the NiCo2O4 and NiCo2O4@NiCo2O4 NCA electrodes and equivalent circuit (inset); (d) schematic representation of rechargeable supercapacitive electrode made from NiCo2O4@NiCo2O4 NCAs on Ni foam.

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