Figure 6 | Scientific Reports

Figure 6

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

Figure 6

(a) CV curves for NiCo2O4@NiCo2O4 NCAs, NiCo2O4 NCAs and pure Ni foam, recorded at a scan of 30 mV s−1; (b, c) CV and galvanostatic charge-discharge curves of the NiCo2O4@NiCo2O4 NCAs at different scan rates and different current densities in 2 M KOH aqueous solution, respectively; (d) galvanostatic charge-discharge curves of the NiCo2O4 NCAs at different current densities.

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