High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes

Formate is a promising product of the electrochemical CO2 reduction reaction (eCO2RR) that can serve as feedstock for biological syntheses. Indium (In) has been shown as a selective electrocatalyst of eCO2RR with high coulombic efficiency (CE) for formate production at small scale at biocompatible n...

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Autores: Kas, Aykut|||0000-0001-5920-9894, Izadi, Paniz|||0000-0002-9427-8171, Harnisch, Falk|||0000-0002-0014-4640
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:284559
Acceso en línea:https://ddd.uab.cat/record/284559
https://dx.doi.org/urn:doi:10.1002/celc.202300311
Access Level:acceso abierto
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spelling High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin CathodesKas, Aykut|||0000-0001-5920-9894Izadi, Paniz|||0000-0002-9427-8171Harnisch, Falk|||0000-0002-0014-4640Formate is a promising product of the electrochemical CO2 reduction reaction (eCO2RR) that can serve as feedstock for biological syntheses. Indium (In) has been shown as a selective electrocatalyst of eCO2RR with high coulombic efficiency (CE) for formate production at small scale at biocompatible non-halophilic that is low salt conditions. Ohmic losses and challenges on potential/current distribution arise for scaling-up, where higher salt loads are advantageous for minimizing these. Higher salt concentration within the solution or halophilic conditions also enable the use of halophilic biocatalysts. We optimized eCO2RR with halophilic media by introducing tin (Sn) as a more sustainable alternative to In. At 3 % NaCl providing a catholyte conductivity (KS of 70 mS cm-1, the maximum specific formate production rates (rformate) of 0.143±0.030 mmol cm-2 h-1 and 0.167±0.027 mmol cm-2 h-1 were achieved at In and Sn electrocatalysts, respectively. Decrease in rformate and CE, in addition to higher variation between replicates was observed with further increase in NaCl concentration above 3 % (KS >70 mS cm-1) up to 10 % (KS =127 mS cm-1). This study sets the foundation for integrated microbial synthesis by halophiles. 22023-01-0120232023-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/284559https://dx.doi.org/urn:doi:10.1002/celc.202300311reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 101000441open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2845592026-06-06T12:50:31Z
dc.title.none.fl_str_mv High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
title High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
spellingShingle High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
Kas, Aykut|||0000-0001-5920-9894
title_short High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
title_full High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
title_fullStr High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
title_full_unstemmed High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
title_sort High Salt Electrolyte Solutions Challenge the Electrochemical CO2 Reduction Reaction to Formate at Indium and Tin Cathodes
dc.creator.none.fl_str_mv Kas, Aykut|||0000-0001-5920-9894
Izadi, Paniz|||0000-0002-9427-8171
Harnisch, Falk|||0000-0002-0014-4640
author Kas, Aykut|||0000-0001-5920-9894
author_facet Kas, Aykut|||0000-0001-5920-9894
Izadi, Paniz|||0000-0002-9427-8171
Harnisch, Falk|||0000-0002-0014-4640
author_role author
author2 Izadi, Paniz|||0000-0002-9427-8171
Harnisch, Falk|||0000-0002-0014-4640
author2_role author
author
description Formate is a promising product of the electrochemical CO2 reduction reaction (eCO2RR) that can serve as feedstock for biological syntheses. Indium (In) has been shown as a selective electrocatalyst of eCO2RR with high coulombic efficiency (CE) for formate production at small scale at biocompatible non-halophilic that is low salt conditions. Ohmic losses and challenges on potential/current distribution arise for scaling-up, where higher salt loads are advantageous for minimizing these. Higher salt concentration within the solution or halophilic conditions also enable the use of halophilic biocatalysts. We optimized eCO2RR with halophilic media by introducing tin (Sn) as a more sustainable alternative to In. At 3 % NaCl providing a catholyte conductivity (KS of 70 mS cm-1, the maximum specific formate production rates (rformate) of 0.143±0.030 mmol cm-2 h-1 and 0.167±0.027 mmol cm-2 h-1 were achieved at In and Sn electrocatalysts, respectively. Decrease in rformate and CE, in addition to higher variation between replicates was observed with further increase in NaCl concentration above 3 % (KS >70 mS cm-1) up to 10 % (KS =127 mS cm-1). This study sets the foundation for integrated microbial synthesis by halophiles.
publishDate 2023
dc.date.none.fl_str_mv 2
2023-01-01
2023
2023-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/284559
https://dx.doi.org/urn:doi:10.1002/celc.202300311
url https://ddd.uab.cat/record/284559
https://dx.doi.org/urn:doi:10.1002/celc.202300311
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 101000441
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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