Fig. 5. Performances of hydrocerussite without CO₂ under cathodic potential in NaHCO₃.

a FEs of h-PCOH at −0.92 V for 5 h in Ar. b Comparison of XRD patterns of h-PCOH after electrolysis under −0.92 V for 5 h in CO₂ and in Ar. The peaks from the substrate of CP are labelled by black stars. c FEs of tested h-PCOH at different potentials in CO₂. d Behaviors of hydrocerussite as the cathodic electrocatalyst. Error bars correspond to the standard error of the mean.