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Published November 2021 | public
Journal Article

Coupling electrochemical CO₂ conversion with CO₂ capture


Electrochemical CO₂ conversion into fuels or chemicals and CO₂ capture from point or dilute sources are two important processes to address the gigaton challenges in reducing greenhouse gas emissions. Both CO₂ capture and electrochemical CO₂ conversion are energy intensive, and synergistic coupling between the two processes can improve the energy efficiency of the system and reduce the cost of the reduced products, via eliminating the CO₂ transport and storage or eliminating the capture media regeneration and molecular CO₂ release. We consider three different levels to couple electrochemical CO₂ reduction with CO₂ capture: independent (Type-I), subsequent (Type-II) and fully integrated (Type-III) capture and conversion processes. We focus on Type-II and Type-III configurations and illustrate potential coupling routes of different capture media, which include amine-based solutions and direct carbamate reduction, redox active carriers, aqueous carbonate and bicarbonate solutions, ionic liquids CO₂ capture and conversion mediated by covalent organic frameworks.

Additional Information

© 2021 Nature Publishing Group. Received 19 May 2021; Accepted 06 October 2021; Published 18 November 2021. This material is based on work performed by the Liquid Sunlight Alliance, which is supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, and Fuels from Sunlight Hub under award no. DE-SC0021266. We also acknowledge the support from SoCalGas on the analysis of CO2 capture processes under award no. 5660060287. This research received funding from the Netherlands Organization for Scientific Research (NWO) under project no. 733.000.008 in the framework of the Solar to Products programme co-funded by Shell Global Solutions International B.V., and from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 852115). Author Contributions: C.X., H.A.A. and D.A.V. conceptualized and organized different levels of coupling between electrochemical CO₂ conversion with CO₂ capture in the manuscript. I.S. and A.G. contributed to writing and editing of the various approaches for coupling CO₂ capture with CO₂ conversion. I.A.D. and X.L. contributed to preparing the figures and references, as well as editing of the manuscript. The authors declare no competing interests. Peer review information: Nature Catalysis thanks Caroline Saouma and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.


Sullivan, I., Goryachev, A., Digdaya, I.A. et al. Author Correction: Coupling electrochemical CO2 conversion with CO2 capture. Nat Catal (2022). https://doi.org/10.1038/s41929-022-00734-1

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October 23, 2023