Low Temperature Synthesis of MnO₂/Graphene Nanocomposites for Supercapacitors

Figure 8

(a) CV curves at 50 mV/s. (b) Cycle number at 1 A/g. (c) Galvanostatic charge/discharge curves at 1 A/g. (d) Nyquist plots of electrodes; inset is the electrical equivalent circuit used for fitting impedance spectra.

(a)

(b)

(c)

(d)