fig3

Figure 3. (A) LSV curves for Bi₂O₃, Bi₂O₃-O_v and F-Bi₂O₃-O_v in a CO₂-saturated 1 M KOH electrolyte at a scan rate of 5 mV s^-1. (B) Current-dependent formate FE for Bi₂O₃, Bi₂O₃-O_v and F-Bi₂O₃-O_v; the error bars represent the standard deviation of the mean of three independent replicates. (C) Partial current densities for Bi₂O₃, Bi₂O₃-O_v and F-Bi₂O₃-O_v under different current conditions. (D) Stability of F-Bi₂O₃-O_v at a current density of 300 mA cm^-2.