fig8

Figure 8. (A) CV curves at different current densities for BVC aqueous symmetric supercapacitor (ASc) device; (B) GCD curves of the ASc device; (C) Bar diagram for specific capacitance at various current densities; (D) Ragone plots of specific energy and specific power; (E) Actual, predicted, and forecast capacitive retention for 2000 cycles; (F) EIS Nyquist plots of before and after stability of the ASc device. BVC: Bismuth vanadate/carbon; CV: cyclic voltammetry; GCD: galvanostatic charge discharge; EIS: electrochemical impedance spectroscopy.