Fig. 2: In situ electrochemical ATR-SEIRAS results on Ag electrode.
From: Molecular level insights on the pulsed electrochemical CO2 reduction
a Representative ATR-SEIRA spectra recorded in the first 40 s for static CO2RR at − 1.1 V vs. RHE, and for pulsed electrolysis at (b) Ea = − 0.2 V vs. RHE or (c) Ea = + 0.7 V vs. RHE, where a same Ec = − 1.1 V and a same interval of ta = tc = 10 s have been applied. d Schematic of COL, COB, COH, and OCHOM adsorbates on Ag(111), together with the calculated and observed IR wavenumbers. Detailed atomic coordinates of the adsorbates can be found in Supplementary Data 1. e Deconvoluted IR features at the cathodic period of 188.3 s and (f) 526.7 s, or (g) at the anodic period of 191.6 s. All potentials were referenced to the RHE scale. Typical solution resistance in 0.1 M CO2-saturated CsHCO3 is determined as 58 ± 2.5 Ω for ATR-SEIRAS cell. The potentials applied were compensated at an 85% level. Source data for this figure are provided in the Source Data file.
