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Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media
Name
s41467-020-16150-7.pdf
Description
Published version
Size
1.95 MB
Format
Adobe PDF
Checksum (MD5)
30687e7c32f88d216591b493e525235d
Author(s)
Liu, Yayuan
Ye, Hong-Zhou
Diederichsen, Kyle M
Van Voorhis, Troy
Hatton, T Alan
Date Issued
2020
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Liu, Yayuan, Ye, Hong-Zhou, Diederichsen, Kyle M, Van Voorhis, Troy and Hatton, T Alan. 2020. "Electrochemically mediated carbon dioxide separation with quinone chemistry in salt-concentrated aqueous media." Nature Communications, 11 (1).
Version
Final published version
Abstract
© 2020, The Author(s). 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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Creative Commons Attribution 4.0 International license
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DOI of Published Version
10.1038/S41467-020-16150-7
