Fig. 3: Electroreduction of CO2 to formic acid on BiNSs.
From: Bismuthene for highly efficient carbon dioxide electroreduction reaction
a pH-corrected linear sweep voltammetric curves (LSV) in the CO2 saturated (solid line pH 7.2) and N2 saturated (dash line pH 8.8) 0.5 M KHCO3 aqueous solution with the same Bi loading of 0.39 mg/cm2 on glassy carbon electrode. b Comparison of Faradaic efficiencies for formate at each applied potential for BiNSs with different thicknesses. c Charging current density differences Δj plotted against scan rates on BiNSs with different thickness for the calculation of ECSA. d Tafel plots of the partial HCOO− current density for BiNSs with different thicknesses. e Nyquist plots for BiNSs with different thicknesses. The dotted curves are the fittings. f Long-term stability of Bismuthene nanosheets (0.65 nm) at a potential of −0.58 V and the corresponding FEs for HCOO− and H2. All the error bars in (b, c) represent the standard error of the mean.
