Fig. 2: Electrochemical CO2RR performance.
From: Asymmetric dinitrogen-coordinated nickel single-atomic sites for efficient CO2 electroreduction
a Measured FECO and FEH2 of Ni-N-C and NiPc. b Calculated jCO of Ni-N-C and NiPc in CO2RR tests. Error bar in a are means ± standard deviation (3 replicates). c, d Comparison of apparent TOFs of CO generation of Ni-N-C with other reported good catalysts tested by H cell in 0.5 M KHCO3 and by flow cell in 1.0 M KOH, respectively. e Chronoamperometry curves and FECO of Ni-N-C measured at −0.7 VRHE for 60 h in H cell with 0.5 M KHCO3 as electrolyte, −0.7 VRHE for over 50 h in flow cell with 0.5 M KHCO3 as electrolyte, and −0.6 VRHE for 60 h in flow cell with 1.0 M KOH as electrolyte. The error bar of FECO is from three independent tests.
