fig6

Figure 6. (A and B) Comparative CV curves of BV and BVC; (C) Plot of the log of current density vs. log of scan rate for BV and BVC electrodes to calculate the “b” values in CV curves; (D) The plot of charge stored vs. reciprocal of square root of potential scan rate of BV and BVC; (E and F) Comparison of the surface and diffusive charge contribution at scan rates (5-100 mV s-1) in BV and BVC electrodes. BV: BiVO4; BVC: bismuth vanadate/carbon; CV: cyclic voltammetry.