Fig. 4: Urea electrosynthesis performance of Se–InOx. | Nature Communications

Fig. 4: Urea electrosynthesis performance of Se–InOx.

From: Sequential-chain coupling over hierarchical click-sites enables highly selective urea electrosynthesis

Fig. 4: Urea electrosynthesis performance of Se–InOx.

a, b Urea yield rates and FEs of Se−InOx, S−InOx, and InOx in CO2-saturated 0.1 M KHCO3 + 0.1 M KNO3 electrolyte. c Comparison of urea yield rates for Se−InOx under different gas/electrolyte conditions. d Cycling stability test of Se−InOx over 10 consecutive electrolysis cycles at −0.4 V (vs. RHE). e Effect of NO3− concentration on the FE distribution of all products. f FEs of all products for Se−InOx, S−InOx, and InOx at −0.4 V (vs. RHE) in CO2-saturated 0.1 M KHCO3 + 0.15 M KNO3 electrolyte. g, h N−selectivity (g) and C−selectivity (h) for Se−InOx, S−InOx, and InOx in CO2-saturated 0.1 M KHCO3 + 0.15 M KNO3 electrolyte. i Comparison of optimal urea yield rates, FEs, Jurea, Nurea−selectivity, and Curea−selectivity for Se−InOx, S−InOx, and InOx. j Comparison of urea yield rates and FEs of Se−InOx with other catalysts reported in the literatures. Electrolyte pH: 6.8 ± 0.5. All potentials are without iR compensation. Error bars represent the standard deviation from three independent measurements. Source data are provided as a Source data file.

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