Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review

Rabiee, Hesamoddin and Ge, Lei ORCID: https://orcid.org/0000-0003-2989-0329 and Zhang, Xueqin and Hu, Shihu and Li, Mengran and Yuan, Zhiguo (2021) Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review. Energy & Environmental Science, 14 (4). pp. 1959-2008. ISSN 1754-5692


Abstract

Electrochemical reduction of gaseous feeds such as CO2, CO, and N2 holds promise for sustainable energy and chemical production. Practical application of this technology is impeded by slow mass transport of the sparingly soluble gases to conventional planar electrodes. Gas diffusion electrodes (GDEs) maintain a high gas concentration in the vicinity of the catalyst and improve mass transport, thereby resulting in current densities higher by orders of magnitude. However, gaseous feeds cause changes to the GDE environment, and specific features are required to efficiently tune the product selectivity and improve reaction stability. Herein, with a comprehensive review of the challenges and advances in GDE development for various electrocatalytic reactions, we intend to complement the body of material-focused reviews. This review outlines GDE fundamentals and highlights key advantages of GDE over conventional electrodes. Through critical discussion about steps in GDE fabrication, and specific shortcomings and remedial strategies for various electrochemical applications, this review discusses connections, unique design criteria, and potential opportunities for gas-fed reactions and desired products. Finally, priorities for future studies are suggested, to support the advancement and scale-up of GDE-based electrochemical technologies.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
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: 15 Mar 2021 01:19
Last Modified: 27 Apr 2021 04:25
Uncontrolled Keywords: Gas Diffusion Electrode, GDE, Flooding, Electrolyzer, Electrocatalysis, CO2 Reduction Reaction, Carbon Monoxide Reduction Reaction, Nitrogen Reduction Reaction
Fields of Research (2008): 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030301 Chemical Characterisation of Materials
09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Fields of Research (2020): 34 CHEMICAL SCIENCES > 3402 Inorganic chemistry > 340211 Transition metal chemistry
34 CHEMICAL SCIENCES > 3403 Macromolecular and materials chemistry > 340303 Nanochemistry
40 ENGINEERING > 4004 Chemical engineering > 400404 Electrochemical energy storage and conversion
Identification Number or DOI: https://doi.org/10.1039/D0EE03756G
URI: http://eprints.usq.edu.au/id/eprint/41560

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