Improving trade-offs in the figures of merit of gas-phase single-pass continuous CO2 electrocatalytic reduction to formate
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Title: | Improving trade-offs in the figures of merit of gas-phase single-pass continuous CO2 electrocatalytic reduction to formate |
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Authors: | Díaz-Sainz, Guillermo | Alvarez-Guerra, Manuel | Avila-Bolivar, Beatriz | Solla-Gullón, José | Montiel, Vicente | Irabien, Ángel |
Research Group/s: | Electroquímica Aplicada y Electrocatálisis |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Keywords: | CO2 electroreduction | Formate | Bismuth electrocatalysts | Gas Diffusion Electrode (GDE) | Membrane electrode assembly (MEA) | Electrochemical filter press reactor |
Knowledge Area: | Química Física |
Issue Date: | 1-Feb-2021 |
Publisher: | Elsevier |
Citation: | Chemical Engineering Journal. 2021, 405: 126965. https://doi.org/10.1016/j.cej.2020.126965 |
Abstract: | The electrochemical conversion of CO2 is gaining increasing attention because it could be considered as an appealing strategy for making value-added products at mild conditions from CO2 captured. In this work, we report a process for the electrocatalytic reduction of CO2 to formate (HCOO−) operating in a continuous way, employing a single pass of the reactants through the electrochemical reactor and using Bi carbon supported nanoparticles in the form of a membrane electrode assembly composed by a Gas Diffusion Electrode, a current collector and a cationic exchange membrane. This contribution presents the best trade-off between HCOO− concentration, Faradaic Efficiency and energy consumption in the literature. We also show noteworthy values of energy consumption required of only 180 kWh·kmol−1 of HCOO−, lower than previous approaches, working at current densities that allow achieving formate concentration higher than 300 g·L−1 and simultaneously, a Faradaic Efficiency close to 90%. The results here displayed make the electrochemical approach closer for future implementation at the industrial scale. |
Sponsor: | The authors of this work would like to acknowledge to the financial support from the MINECO, through the projects CTQ2016-76231-C2-1-R and CTQ2016-76231-C2-2-R (AEI/FEDER, UE). J.S.G acknowledges financial support from VITC (Vicerrectorado de Investigación y Transferencia de Conocimiento) of the University of Alicante (UTALENTO16-02). |
URI: | http://hdl.handle.net/10045/109394 |
ISSN: | 1385-8947 (Print) | 1873-3212 (Online) |
DOI: | 10.1016/j.cej.2020.126965 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2020 Elsevier B.V. |
Peer Review: | si |
Publisher version: | https://doi.org/10.1016/j.cej.2020.126965 |
Appears in Collections: | INV - LEQA - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Diaz-Sainz_etal_2021_ChemEngJ_final.pdf | Versión final (acceso restringido) | 5,36 MB | Adobe PDF | Open Request a copy |
Diaz-Sainz_etal_2021_ChemEngJ_accepted.pdf | Accepted Manuscript (acceso abierto) | 1,74 MB | Adobe PDF | Open Preview |
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