Fig. 4: Spectroscopic evidence of COF’s role as ion transport regulator.
From: Electrocatalytic CO2 reduction to ethylene in an acid-fed membrane electrode assembly at 10 A
a XRF spectrum on Th-TF COF/Cu3N electrode showing the solvated K emissions at different current densities. b The local content of K of Th-TF COF/Cu3N and bare Cu3N electrodes. c In-situ Raman spectra during electrosynthesis of C2H4 over Th-TF COF and Sustainion-coated Cu3N catalysts at different current densities. Electrolyte is 0.5 M K2SO4/H2SO4 (pH~3). d In-situ ATR-SEIRS spectra recorded during acidic CO2R on Th-TF COF/Cu3N catalyst from −0.3 to −1.7 V versus Ag/AgCl. Contour map of in-situ ATR-Fourier transform infrared spectra on the Th-TF COF/Cu3N (e) and bare Cu3N catalysts (f) recorded from 1100 to 1750 cm−1. No iR correction was applied. Source data for Fig. 4 are provided as a Source Data file.
