An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy

The energy storage mechanism operating in carbon-based supercapacitors using ionic liquids as electrolytes is not yet fully understood. In this paper, the interactions of ions of two widely used ionic liquids, i.e. EMImTFSI and EMImBF4, with a high specific surface area microporous carbon are invest...

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Autores: Quintanal Mera, Noemí, Barreda García, Daniel, Blanco Rodríguez, Clara, González Arias, Zoraida, Álvarez Rodríguez, Patricia, Granda Ferreira, Marcos, Sevilla Solís, Marta, Santamaría Ramírez, Ricardo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/349957
Acceso en línea:http://hdl.handle.net/10261/349957
https://api.elsevier.com/content/abstract/scopus_id/85158820605
Access Level:acceso abierto
Palabra clave:http://metadata.un.org/sdg/7
http://metadata.un.org/sdg/9
Ensure access to affordable, reliable, sustainable and modern energy for all
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
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spelling An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance SpectroscopyQuintanal Mera, NoemíBarreda García, DanielBlanco Rodríguez, ClaraGonzález Arias, ZoraidaÁlvarez Rodríguez, PatriciaGranda Ferreira, MarcosSevilla Solís, MartaSantamaría Ramírez, Ricardohttp://metadata.un.org/sdg/7http://metadata.un.org/sdg/9Ensure access to affordable, reliable, sustainable and modern energy for allBuild resilient infrastructure, promote inclusive and sustainable industrialization and foster innovationThe energy storage mechanism operating in carbon-based supercapacitors using ionic liquids as electrolytes is not yet fully understood. In this paper, the interactions of ions of two widely used ionic liquids, i.e. EMImTFSI and EMImBF4, with a high specific surface area microporous carbon are investigated. Galvanostatic cycling experiments performed on each electrode and in the full cell demonstrate that a specific energy close to 46 Wh kg-1 can be achieved with this carbon. More interestingly, impedance spectroscopy studies reveal the presence of some unusual behavior, such as the presence of inductive elements in some of the electrodes, either in the positive or in the negative electrode. These inductive elements are identified, for the first time, as another type of possible experimental evidences of some phenomena previously proposed, such as ion-swapping or co-ions desorption, both phenomena leading to the formation of the superionic state.The authors acknowledge Ministerio de Ciencia, Innovación y Universidades for financial support (project MAT2016–77114-R and the predoctoral contract of Noemí Quintanal, BES-2017–082038). Authors would also thank Principado de Asturias (FICYT, Ayudas a grupos de investigación para actividades de I+D+i 2021–2023, AYUD/2021/50249) for its financial support.Peer reviewedInstitute of Physics (Great Britain)Ministerio de Ciencia, Innovación y Universidades (España)Principado de AsturiasSantamaría Ramírez, Ricardo [0000-0001-9818-6998]Rodríguez Blanco, Clara [0000-0002-0922-1980]González Arias, Zoraida [0000-0001-8932-3671]Álvarez Rodríguez, Patricia [0000-0001-9676-0546]Granda Ferreira, Marcos [0000-0001-7479-0445]Sevilla Solís, Marta [0000-0002-2471-2403]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/349957https://api.elsevier.com/content/abstract/scopus_id/85158820605reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//MAT2016-77114-Rinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/BES-2017-082038Journal of the Electrochemical Societyhttps://doi.org/10.1149/1945-7111/acce73Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3499572026-05-22T06:33:51Z
dc.title.none.fl_str_mv An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
title An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
spellingShingle An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
Quintanal Mera, Noemí
http://metadata.un.org/sdg/7
http://metadata.un.org/sdg/9
Ensure access to affordable, reliable, sustainable and modern energy for all
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
title_short An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
title_full An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
title_fullStr An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
title_full_unstemmed An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
title_sort An Insight into the Mechanisms of Energy Storage in a Double Layer Capacitor with ILs and a Microporous Carbon: Experimental Evidences of Ion-Swapping by Electrochemical Impedance Spectroscopy
dc.creator.none.fl_str_mv Quintanal Mera, Noemí
Barreda García, Daniel
Blanco Rodríguez, Clara
González Arias, Zoraida
Álvarez Rodríguez, Patricia
Granda Ferreira, Marcos
Sevilla Solís, Marta
Santamaría Ramírez, Ricardo
author Quintanal Mera, Noemí
author_facet Quintanal Mera, Noemí
Barreda García, Daniel
Blanco Rodríguez, Clara
González Arias, Zoraida
Álvarez Rodríguez, Patricia
Granda Ferreira, Marcos
Sevilla Solís, Marta
Santamaría Ramírez, Ricardo
author_role author
author2 Barreda García, Daniel
Blanco Rodríguez, Clara
González Arias, Zoraida
Álvarez Rodríguez, Patricia
Granda Ferreira, Marcos
Sevilla Solís, Marta
Santamaría Ramírez, Ricardo
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Principado de Asturias
Santamaría Ramírez, Ricardo [0000-0001-9818-6998]
Rodríguez Blanco, Clara [0000-0002-0922-1980]
González Arias, Zoraida [0000-0001-8932-3671]
Álvarez Rodríguez, Patricia [0000-0001-9676-0546]
Granda Ferreira, Marcos [0000-0001-7479-0445]
Sevilla Solís, Marta [0000-0002-2471-2403]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv http://metadata.un.org/sdg/7
http://metadata.un.org/sdg/9
Ensure access to affordable, reliable, sustainable and modern energy for all
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
topic http://metadata.un.org/sdg/7
http://metadata.un.org/sdg/9
Ensure access to affordable, reliable, sustainable and modern energy for all
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
description The energy storage mechanism operating in carbon-based supercapacitors using ionic liquids as electrolytes is not yet fully understood. In this paper, the interactions of ions of two widely used ionic liquids, i.e. EMImTFSI and EMImBF4, with a high specific surface area microporous carbon are investigated. Galvanostatic cycling experiments performed on each electrode and in the full cell demonstrate that a specific energy close to 46 Wh kg-1 can be achieved with this carbon. More interestingly, impedance spectroscopy studies reveal the presence of some unusual behavior, such as the presence of inductive elements in some of the electrodes, either in the positive or in the negative electrode. These inductive elements are identified, for the first time, as another type of possible experimental evidences of some phenomena previously proposed, such as ion-swapping or co-ions desorption, both phenomena leading to the formation of the superionic state.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/349957
https://api.elsevier.com/content/abstract/scopus_id/85158820605
url http://hdl.handle.net/10261/349957
https://api.elsevier.com/content/abstract/scopus_id/85158820605
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI//MAT2016-77114-R
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/BES-2017-082038
Journal of the Electrochemical Society
https://doi.org/10.1149/1945-7111/acce73
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics (Great Britain)
publisher.none.fl_str_mv Institute of Physics (Great Britain)
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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