Self-Assembly of 3D Fennel-Like Co₃O₄ with Thirty-Six Surfaces for High Performance Supercapacitor

Figure 9

Nyquist plot of the Co₃O₄ electrode, in which the red and blue circles are EIS plot and fitted data, respectively (the inset (a) shows the Nyquist plot of the sample in high frequency and (b) is the equivalent circuit diagram).