公开(公告)号：US20230416929A1

公开(公告)日：2023-12-28

申请号：US18038669

申请日：2021-11-25

Applicant: THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO

Inventor： Edward H. SARGENT ,  Geonhui LEE ,  Yuguang Christopher LI

IPC: C25B1/23 ,  C25B3/09 ,  C25B3/26 ,  C25B15/08 ,  C25B11/091 ,  C25B11/042 ,  C25B9/19 ,  C25B11/065 ,  C25B15/029

CPC classification number: C25B1/23 ,  C25B3/09 ,  C25B3/26 ,  C25B15/083 ,  C25B11/091 ,  C25B11/042 ,  C25B9/19 ,  C25B11/065 ,  C25B15/029

Abstract: An electrochemical process, and related method and system to upgrade captured CO2 into value-added products. CO2 capture technologies based on chemisorption present the potential to lower net emissions of CO2 into the atmosphere. The use of alkali cations to tailor the electrochemical double layer allows achieving the valorization of chemisorbed CO2 in an aqueous amine-based electrolyte, by placing the CO2 of the amine-CO2 adduct sufficiently close to the site of an heterogeneous reaction at the working electrode. It is revealed, using electrochemical studies and in-situ surface-enhanced Raman spectroscopy, that a smaller double layer distance can correlate with improved activity for CO2 to CO from amine solutions.