Fig. 4: Relationship between ECM selectivity and adsorbed intermediates on ssCuNC100 and CuNC100 SACs. | Nature Communications

Fig. 4: Relationship between ECM selectivity and adsorbed intermediates on ssCuNC100 and CuNC100 SACs.

From: Tuning binding strength between single metal atoms and supports enhances electrochemical CO2 methanation

Fig. 4

FE for CO (a) and C2 products (ethylene, acetate and ethanol) (b) at different applied potentials. Error bars represent one standard deviation from three independent samples. The R used for CuNC100 and ssCuNC100 in (a, b) was 2.4 ± 0.15 and 2.2 ± 0.27 Ω, respectively. In situ ATR-FTIR spectra of CuNC100 (c) and ssCuNC100 (d) SACs under different applied potentials. e Stark effect of linearly adsorbed CO (*COL) vibration as a function of potential. f *COL intensity as a function of potential. *COL wavenumbers and intensities in (e) and (f) were derived from spectra (c) and (d). *: Denotes active reaction sites. In situ and ex situ Cu K-edge EXAFS spectra of CuNC100 (g) and ssCuNC100 (h) under different applied current densities. Source data are provided as a Source data file.

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