Fig. 3: Comparison between electrode surface and amine-type structure. | Nature Communications

Fig. 3: Comparison between electrode surface and amine-type structure.

From: Investigating proton shuttling and electrochemical mechanisms of amines in integrated CO2 capture and utilization

Fig. 3

Cyclic voltammograms (CVs) of dissolved CO2, CO2 captured amines MEA–CO2 and AMP–CO2 and the free amines MEA and AMP in sat. TEACl in Sulfolane using a A Cu electrode (area = 0.196 cm2) or B Pb electrode (area = 0.196 cm2) and a RE= Ag/AgCl, CE = Pt, scanning from positive to negative and back at 10 mV s−1, 2nd scan at room temperature. An iR compensation of 85% was automatically applied by the potentiostat, CVs without iR compensation are shown in Fig. S18. Average resistance (N = 8) 667±263 Ω and 530±197 Ω for Pb and Cu, respectively. MEA monoethanolamine, AMP   2-amino-2-methyl-1-propanol, vs. versus. Source data are provided as a Source Data file.

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