Advances and challenges in electrochemical CO2 reduction processes: an engineering and design perspective looking beyond new catalyst materials

Garg, Sahil and Li, Mengran and Weber, Adam Z. and Ge, Lei ORCID: https://orcid.org/0000-0003-2989-0329 and Li, Liye and Rudolph, Victor and Wang, Guoxiong and Rufford, Thomas E. (2020) Advances and challenges in electrochemical CO2 reduction processes: an engineering and design perspective looking beyond new catalyst materials. Journal of Materials Chemistry A, 8 (4). pp. 1511-1544. ISSN 2050-7488


Abstract

Electrochemical CO2 reduction (CO2R) is one of several promising strategies to mitigate CO2 emissions.
Electrochemical processes operate at mild conditions, can be tuned to selective products, allow modular design, and provide opportunities to integrate renewable electricity with CO2 reduction in carbon-intensive manufacturing industries such as iron and steel making. In recent years, significant advances have been achieved in the development of highly efficient and selective electrocatalysts for CO2R. However, to realize fully the potential benefits of new electrocatalysts in low cost, large scale CO2R electrolyzers requires advances in design and engineering of the CO2R process. In this review, we examine the state-of-the-art in electrochemical CO2R technologies, and highlight how the efficiency of CO2R processes can be improved through (i) electrolyzer configuration, (ii) electrode structure, (iii) electrolyte selection, (iv) pH control, and (v) the electrolyzer's operating pressure and temperature. Although a comprehensive review of catalytic materials is beyond this review's scope, we illustrate how other engineering and design decisions may also influence CO2R reaction pathways because of effects on mass transfer rates, the electrode surface chemistry, interactions with intermediate reaction species, and rates of charge transfer.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 18 Jun 2020 06:56
Last Modified: 13 Apr 2021 03:32
Uncontrolled Keywords: electrolytic reduction; electrocatalysts; dioxide reduction
Fields of Research (2008): 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030306 Synthesis of Materials
09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Socio-Economic Objectives (2008): D Environment > 96 Environment > 9603 Climate and Climate Change > 960302 Climate Change Mitigation Strategies
Identification Number or DOI: https://doi.org/10.1039/c9ta13298h
URI: http://eprints.usq.edu.au/id/eprint/37907

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