Fig. 4. (a) and (b) GC profiles of different electrodes obtained at −2.0 V in 0.1 M KHCO3, (c) NMR spectra, (d) H2 concentration, (e) FE values of the EC products, (f) CO and hydrocarbon concentrations, (g) C2−4 hydrocarbon concentrations, and (h) FE values of CO, the hydrocarbons, methanol, and formate.
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