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Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media

Carbon capture is essential for mitigating carbon dioxide emissions. Compared to conventional chemical scrubbing, electrochemically mediated carbon capture utilizing redox-active sorbents such as quinones is emerging as a more versatile and economical alternative. However, the practicality of such s...

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Autores principales: Liu, Yayuan, Ye, Hong-Zhou, Diederichsen, Kyle M., Van Voorhis, Troy, Hatton, T. Alan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211026/
https://www.ncbi.nlm.nih.gov/pubmed/32385274
http://dx.doi.org/10.1038/s41467-020-16150-7
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author Liu, Yayuan
Ye, Hong-Zhou
Diederichsen, Kyle M.
Van Voorhis, Troy
Hatton, T. Alan
author_facet Liu, Yayuan
Ye, Hong-Zhou
Diederichsen, Kyle M.
Van Voorhis, Troy
Hatton, T. Alan
author_sort Liu, Yayuan
collection PubMed
description Carbon capture is essential for mitigating carbon dioxide emissions. Compared to conventional chemical scrubbing, electrochemically mediated carbon capture utilizing redox-active sorbents such as quinones is emerging as a more versatile and economical alternative. However, the practicality of such systems is hindered by the requirement of toxic, flammable organic electrolytes or often costly ionic liquids. Herein, we demonstrate that rationally designed aqueous electrolytes with high salt concentration can effectively resolve the incompatibility between aqueous environments and quinone electrochemistry for carbon capture, eliminating the safety, toxicity, and at least partially the cost concerns in previous studies. Salt-concentrated aqueous media also offer distinct advantages including extended electrochemical window, high carbon dioxide activity, significantly reduced evaporative loss and material dissolution, and importantly, greatly suppressed competing reactions including under simulated flue gas. Correspondingly, we achieve continuous carbon capture-release operations with outstanding capacity, stability, efficiency and electrokinetics, advancing electrochemical carbon separation further towards practical applications.
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spelling pubmed-72110262020-05-13 Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media Liu, Yayuan Ye, Hong-Zhou Diederichsen, Kyle M. Van Voorhis, Troy Hatton, T. Alan Nat Commun Article Carbon capture is essential for mitigating carbon dioxide emissions. Compared to conventional chemical scrubbing, electrochemically mediated carbon capture utilizing redox-active sorbents such as quinones is emerging as a more versatile and economical alternative. However, the practicality of such systems is hindered by the requirement of toxic, flammable organic electrolytes or often costly ionic liquids. Herein, we demonstrate that rationally designed aqueous electrolytes with high salt concentration can effectively resolve the incompatibility between aqueous environments and quinone electrochemistry for carbon capture, eliminating the safety, toxicity, and at least partially the cost concerns in previous studies. Salt-concentrated aqueous media also offer distinct advantages including extended electrochemical window, high carbon dioxide activity, significantly reduced evaporative loss and material dissolution, and importantly, greatly suppressed competing reactions including under simulated flue gas. Correspondingly, we achieve continuous carbon capture-release operations with outstanding capacity, stability, efficiency and electrokinetics, advancing electrochemical carbon separation further towards practical applications. Nature Publishing Group UK 2020-05-08 /pmc/articles/PMC7211026/ /pubmed/32385274 http://dx.doi.org/10.1038/s41467-020-16150-7 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Liu, Yayuan
Ye, Hong-Zhou
Diederichsen, Kyle M.
Van Voorhis, Troy
Hatton, T. Alan
Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
title Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
title_full Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
title_fullStr Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
title_full_unstemmed Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
title_short Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
title_sort electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211026/
https://www.ncbi.nlm.nih.gov/pubmed/32385274
http://dx.doi.org/10.1038/s41467-020-16150-7
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