Fig. 1 Electrode configurations of Cu-based materials: (A) Catalytic mechanism of Cu electrode. (B) Scanning electron microscope images (SEM) of 0.5-UiO/Cu. (C) SEM and EDS elemental mapping of cross-section. (D) FE vs. potential of CO2RR and HER products[26]. (E) FE vs. potential of C2+ products on Cu and 0.5-UiO/Cu. (F) FE vs. potential of HER and CO2RR product distributions on Cu, UiO-66, 0.5-UiO/Cu, and 0.5-UiO/Cu-bare electrodes. (G) Schematic diagram of the microfluidic electrolyzer. (H) Typical SEM images of the nanoporous Cu catalysts, (I) cross-sectional SEM images of the nanoporous Cu catalysts on GDL, and (J) typical HRTEM images. (K) Timing current profiles of CO2RR on nanoporous Cu at different potentials, (L) electrolytic C2+ fractional current density, and (M) corresponding FE[48]
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