fig3
From: Sea urchin-like La-doped MnO2 for electrocatalytic oxidation degradation of sulfonamide in water
Figure 3. (A) OER LSV polarization curves, (B) the anodic charging currents at 1.34 V (vs. RHE) plotted against the scan rates, (C) the Tafel plots, (D) the Nyquist plots with fitting, and (E) the potentials against the pH values of the electrolytes at 4 mA/cm2 of La-doped MnO2 and MnO2; (F) The CPE of the La-doped MnO2 electrocatalyst at 1.75 V (vs. RHE) without iR compensation. OER: Oxygen evolution reaction; RHE: reversible hydrogen electrode; CPE: controlled potential electrolysis.
