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Bicarbonate or Carbonate Processes for Coupling Carbon Dioxide Capture and Electrochemical Conversion

Welch, Alex J. and Dunn, Emily and DuChene, Joseph S. and Atwater, Harry A. (2020) Bicarbonate or Carbonate Processes for Coupling Carbon Dioxide Capture and Electrochemical Conversion. ACS Energy Letters, 5 (3). pp. 940-945. ISSN 2380-8195. doi:10.1021/acsenergylett.0c00234.

[img] PDF (Figures S1 and S2; energy input calculations for CO2 capture and conversion processes (section S1), energy input calculations for bicarbonate or carbonate feedstock systems (section S2), and CO2 electrolyzer conversion efficiencies (section S3)) - Supplemental Material
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Designing a scalable system to capture CO₂ from the air and convert it into valuable chemicals, fuels, and materials could be transformational for mitigating climate change. Climate models predict that negative greenhouse gas emissions will be required by the year 2050 in order to stay below a 2 °C change in global temperature. The processes of CO₂ capture, CO₂ conversion, and finally product separation all require significant energy inputs; devising a system that simultaneously minimizes the energy required for all steps is an important challenge. To date, a variety of prototype or pilot-level CO₂ capture and/or conversion systems have been designed and built targeting the individual objectives of either capture or conversion. One approach has focused on CO₂ removal from the atmosphere and storage of pure pressurized CO₂. Other efforts have concentrated on CO₂ conversion processes, such as electrochemical reduction or fermentation. Only a few concepts or analyses have been developed for complete end-to-end processes that perform both CO₂ capture and transformation.

Item Type:Article
Related URLs:
URLURL TypeDescription
Welch, Alex J.0000-0003-2132-9617
DuChene, Joseph S.0000-0002-7145-323X
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2020 American Chemical Society. Received: February 2, 2020; Accepted: February 26, 2020. Publication Date: March 3, 2020. This work is done within the Joint Center for Artificial Photosynthesis, a Department of Energy (DOE) Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award Number De-SC0004993. A.J.W. acknowledges support from the Resnick Sustainability Institute at Caltech for fellowship support and from the National Science Foundation (NSF) Graduate Research Fellowship Program under Base Award No. 174530. Author Contributions: A.J.W, J.S.D, and H.A.A. conceived the idea and examined the feasibility of such a process. A.J.W. and E.D. performed all of the calculations and research required to complete the energy analysis of various systems. J.S.D. advised throughout the process and provided valuable input for determining the viability of various proposed processes. A.J.W., J.S.D, and H.A.A. wrote the Viewpoint, and all authors commented on the manuscript. Any opinions, findings, and conclusions expressed in this material are those of the authors and do not necessary reflect those of DOE or NSF. Views expressed in this Viewpoint are those of the authors and not necessarily the views of the ACS. The authors declare no competing financial interest.
Group:JCAP, Resnick Sustainability Institute
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0004993
Resnick Sustainability InstituteUNSPECIFIED
NSF Graduate Research FellowshipDGE-174530
Issue or Number:3
Record Number:CaltechAUTHORS:20200304-074750016
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Official Citation:Bicarbonate or Carbonate Processes for Coupling Carbon Dioxide Capture and Electrochemical Conversion. Alex J. Welch, Emily Dunn, Joseph S. DuChene, and Harry A. Atwater. ACS Energy Letters 2020 5 (3), 940-945; DOI: 10.1021/acsenergylett.0c00234
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101691
Deposited By: Tony Diaz
Deposited On:04 Mar 2020 19:47
Last Modified:16 Nov 2021 18:05

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