Charge storage capacity of electromethanogenic biocathodes

[EN] Methanogenic biocathodes (MB) can convert CO2 and electricity into methane. This feature, that allows them to potentially be used for long-term electrical energy storage, has aroused great interest during the past 10 years. MB can also operate as biological supercapacitors, a characteristic tha...

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Detalhes bibliográficos
Autores: Carrillo Peña, Daniela Andrea, Pelaz Guerra, Guillermo, Mateos González, Raúl, Escapa González, Adrián
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Universidad de León
Repositorio:BULERIA. Repositorio Institucional de la Universidad de León
OAI Identifier:oai:buleria.unileon.es:10612/17449
Acesso em linha:https://hdl.handle.net/10612/17449
Access Level:acceso abierto
Palavra-chave:Ingeniería química
Biocathodes
Capacitance
Charge storage
Energy storage
3303 Ingeniería y Tecnología Químicas
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spelling Charge storage capacity of electromethanogenic biocathodesCarrillo Peña, Daniela AndreaPelaz Guerra, GuillermoMateos González, RaúlEscapa González, AdriánIngeniería químicaBiocathodesCapacitanceCharge storageEnergy storage3303 Ingeniería y Tecnología Químicas[EN] Methanogenic biocathodes (MB) can convert CO2 and electricity into methane. This feature, that allows them to potentially be used for long-term electrical energy storage, has aroused great interest during the past 10 years. MB can also operate as biological supercapacitors, a characteristic that can be exploited for short-term energy storage and that has received much less attention. In this study, we investigate the electrical charge storage capabilities of carbon-felt-based MB modified with graphene oxide. The charge-discharge experiments revealed that the potential of the electrode plays an important role during the discharging period: low potentials (−1.2 V vs Ag/AgCl) created an inrush of faradaic current that masked any capacitive current. At more positive potentials (−0.8 V vs Ag/AgCl), the biological electrodes were outperformed by the abiotic electrodes, and only when the potential was set at −1.0 V vs Ag/AgCl the graphene-modified biological electrode showed its superior charge storage capacity. Overall, results indicated that the graphene modification is crucial to obtain bioelectrodes with improved capacitance: untreated bioelectrodes showed a charge storage capacity inferior to that measured in the abiotic electrodes.SIMCIN/AEI/10.13039/501100011033European Union NextGenerationEU/PRTRElsevierFisica AplicadaFacultad de Ciencias Biologicas y Ambientales2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://hdl.handle.net/10612/17449reponame:BULERIA. Repositorio Institucional de la Universidad de Leóninstname:Universidad de LeónInglésinfo:eu-repo/grantAgreement/Ministerio de Ciencia, Innovación y Universidades/ TED2021-129687A-I00/http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:buleria.unileon.es:10612/174492026-06-24T12:43:27Z
dc.title.none.fl_str_mv Charge storage capacity of electromethanogenic biocathodes
title Charge storage capacity of electromethanogenic biocathodes
spellingShingle Charge storage capacity of electromethanogenic biocathodes
Carrillo Peña, Daniela Andrea
Ingeniería química
Biocathodes
Capacitance
Charge storage
Energy storage
3303 Ingeniería y Tecnología Químicas
title_short Charge storage capacity of electromethanogenic biocathodes
title_full Charge storage capacity of electromethanogenic biocathodes
title_fullStr Charge storage capacity of electromethanogenic biocathodes
title_full_unstemmed Charge storage capacity of electromethanogenic biocathodes
title_sort Charge storage capacity of electromethanogenic biocathodes
dc.creator.none.fl_str_mv Carrillo Peña, Daniela Andrea
Pelaz Guerra, Guillermo
Mateos González, Raúl
Escapa González, Adrián
author Carrillo Peña, Daniela Andrea
author_facet Carrillo Peña, Daniela Andrea
Pelaz Guerra, Guillermo
Mateos González, Raúl
Escapa González, Adrián
author_role author
author2 Pelaz Guerra, Guillermo
Mateos González, Raúl
Escapa González, Adrián
author2_role author
author
author
dc.contributor.none.fl_str_mv Fisica Aplicada
Facultad de Ciencias Biologicas y Ambientales
dc.subject.none.fl_str_mv Ingeniería química
Biocathodes
Capacitance
Charge storage
Energy storage
3303 Ingeniería y Tecnología Químicas
topic Ingeniería química
Biocathodes
Capacitance
Charge storage
Energy storage
3303 Ingeniería y Tecnología Químicas
description [EN] Methanogenic biocathodes (MB) can convert CO2 and electricity into methane. This feature, that allows them to potentially be used for long-term electrical energy storage, has aroused great interest during the past 10 years. MB can also operate as biological supercapacitors, a characteristic that can be exploited for short-term energy storage and that has received much less attention. In this study, we investigate the electrical charge storage capabilities of carbon-felt-based MB modified with graphene oxide. The charge-discharge experiments revealed that the potential of the electrode plays an important role during the discharging period: low potentials (−1.2 V vs Ag/AgCl) created an inrush of faradaic current that masked any capacitive current. At more positive potentials (−0.8 V vs Ag/AgCl), the biological electrodes were outperformed by the abiotic electrodes, and only when the potential was set at −1.0 V vs Ag/AgCl the graphene-modified biological electrode showed its superior charge storage capacity. Overall, results indicated that the graphene modification is crucial to obtain bioelectrodes with improved capacitance: untreated bioelectrodes showed a charge storage capacity inferior to that measured in the abiotic electrodes.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/10612/17449
url https://hdl.handle.net/10612/17449
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/Ministerio de Ciencia, Innovación y Universidades/ TED2021-129687A-I00/
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:BULERIA. Repositorio Institucional de la Universidad de León
instname:Universidad de León
instname_str Universidad de León
reponame_str BULERIA. Repositorio Institucional de la Universidad de León
collection BULERIA. Repositorio Institucional de la Universidad de León
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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