Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy

Autores
Greco, Francesco; Shin, Sunghwan; Williams, Federico José; Heller, Bettina S. J.; Maier, Florian; Steinrück, Hans Peter
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new approach to investigate potential screening at the interface of ionic liquids (ILs) and charged electrodes in a two-electrode electrochemical cell by in situ X-ray photoelectron spectroscopy has been introduced. Using identical electrodes, we deduce the potential screening at the working and the counter electrodes as a function of applied voltage from the potential change of the bulk IL, as derived from corresponding core level binding energy shifts for different IL/electrode combinations. For imidazolium-based ILs and Pt electrodes, we find a significantly larger potential screening at the anode than at the cathode, which we attribute to strong attractive interactions between the imidazolium cation and Pt. In the absence of specific ion/electrode interactions, asymmetric potential screening only occurs for ILs with different cation and anion sizes as demonstrated for an imidazolium chloride IL and Au electrodes, which we assign to the different thicknesses of the electrical double layers. Our results imply that potential screening in ILs is mainly established by a single layer of counterions at the electrode.
Fil: Greco, Francesco. Universitat Erlangen-Nuremberg; Alemania
Fil: Shin, Sunghwan. Universitat Erlangen-Nuremberg; Alemania
Fil: Williams, Federico José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Heller, Bettina S. J.. Universitat Erlangen-Nuremberg; Alemania
Fil: Maier, Florian. Universitat Erlangen-Nuremberg; Alemania
Fil: Steinrück, Hans Peter. Universitat Erlangen-Nuremberg; Alemania
Materia
BINDING ENERGIES
ELECTRODES
IONIC LIQUIDS
PHOTOELECTRON SPECTROSCOPY
POTENTIAL SCREENING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/123712
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron SpectroscopyGreco, FrancescoShin, SunghwanWilliams, Federico JoséHeller, Bettina S. J.Maier, FlorianSteinrück, Hans PeterBINDING ENERGIESELECTRODESIONIC LIQUIDSPHOTOELECTRON SPECTROSCOPYPOTENTIAL SCREENINGhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A new approach to investigate potential screening at the interface of ionic liquids (ILs) and charged electrodes in a two-electrode electrochemical cell by in situ X-ray photoelectron spectroscopy has been introduced. Using identical electrodes, we deduce the potential screening at the working and the counter electrodes as a function of applied voltage from the potential change of the bulk IL, as derived from corresponding core level binding energy shifts for different IL/electrode combinations. For imidazolium-based ILs and Pt electrodes, we find a significantly larger potential screening at the anode than at the cathode, which we attribute to strong attractive interactions between the imidazolium cation and Pt. In the absence of specific ion/electrode interactions, asymmetric potential screening only occurs for ILs with different cation and anion sizes as demonstrated for an imidazolium chloride IL and Au electrodes, which we assign to the different thicknesses of the electrical double layers. Our results imply that potential screening in ILs is mainly established by a single layer of counterions at the electrode.Fil: Greco, Francesco. Universitat Erlangen-Nuremberg; AlemaniaFil: Shin, Sunghwan. Universitat Erlangen-Nuremberg; AlemaniaFil: Williams, Federico José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Heller, Bettina S. J.. Universitat Erlangen-Nuremberg; AlemaniaFil: Maier, Florian. Universitat Erlangen-Nuremberg; AlemaniaFil: Steinrück, Hans Peter. Universitat Erlangen-Nuremberg; AlemaniaWiley VCH Verlag2019-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/123712Greco, Francesco; Shin, Sunghwan; Williams, Federico José; Heller, Bettina S. J.; Maier, Florian; et al.; Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy; Wiley VCH Verlag; ChemistryOpen; 8; 12; 12-2019; 1365-13682191-13632191-1363CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/open.201900211info:eu-repo/semantics/altIdentifier/doi/10.1002/open.201900211info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:08:05Zoai:ri.conicet.gov.ar:11336/123712instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:08:06.065CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
title Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
spellingShingle Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
Greco, Francesco
BINDING ENERGIES
ELECTRODES
IONIC LIQUIDS
PHOTOELECTRON SPECTROSCOPY
POTENTIAL SCREENING
title_short Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
title_full Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
title_fullStr Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
title_full_unstemmed Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
title_sort Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
dc.creator.none.fl_str_mv Greco, Francesco
Shin, Sunghwan
Williams, Federico José
Heller, Bettina S. J.
Maier, Florian
Steinrück, Hans Peter
author Greco, Francesco
author_facet Greco, Francesco
Shin, Sunghwan
Williams, Federico José
Heller, Bettina S. J.
Maier, Florian
Steinrück, Hans Peter
author_role author
author2 Shin, Sunghwan
Williams, Federico José
Heller, Bettina S. J.
Maier, Florian
Steinrück, Hans Peter
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv BINDING ENERGIES
ELECTRODES
IONIC LIQUIDS
PHOTOELECTRON SPECTROSCOPY
POTENTIAL SCREENING
topic BINDING ENERGIES
ELECTRODES
IONIC LIQUIDS
PHOTOELECTRON SPECTROSCOPY
POTENTIAL SCREENING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new approach to investigate potential screening at the interface of ionic liquids (ILs) and charged electrodes in a two-electrode electrochemical cell by in situ X-ray photoelectron spectroscopy has been introduced. Using identical electrodes, we deduce the potential screening at the working and the counter electrodes as a function of applied voltage from the potential change of the bulk IL, as derived from corresponding core level binding energy shifts for different IL/electrode combinations. For imidazolium-based ILs and Pt electrodes, we find a significantly larger potential screening at the anode than at the cathode, which we attribute to strong attractive interactions between the imidazolium cation and Pt. In the absence of specific ion/electrode interactions, asymmetric potential screening only occurs for ILs with different cation and anion sizes as demonstrated for an imidazolium chloride IL and Au electrodes, which we assign to the different thicknesses of the electrical double layers. Our results imply that potential screening in ILs is mainly established by a single layer of counterions at the electrode.
Fil: Greco, Francesco. Universitat Erlangen-Nuremberg; Alemania
Fil: Shin, Sunghwan. Universitat Erlangen-Nuremberg; Alemania
Fil: Williams, Federico José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Heller, Bettina S. J.. Universitat Erlangen-Nuremberg; Alemania
Fil: Maier, Florian. Universitat Erlangen-Nuremberg; Alemania
Fil: Steinrück, Hans Peter. Universitat Erlangen-Nuremberg; Alemania
description A new approach to investigate potential screening at the interface of ionic liquids (ILs) and charged electrodes in a two-electrode electrochemical cell by in situ X-ray photoelectron spectroscopy has been introduced. Using identical electrodes, we deduce the potential screening at the working and the counter electrodes as a function of applied voltage from the potential change of the bulk IL, as derived from corresponding core level binding energy shifts for different IL/electrode combinations. For imidazolium-based ILs and Pt electrodes, we find a significantly larger potential screening at the anode than at the cathode, which we attribute to strong attractive interactions between the imidazolium cation and Pt. In the absence of specific ion/electrode interactions, asymmetric potential screening only occurs for ILs with different cation and anion sizes as demonstrated for an imidazolium chloride IL and Au electrodes, which we assign to the different thicknesses of the electrical double layers. Our results imply that potential screening in ILs is mainly established by a single layer of counterions at the electrode.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/123712
Greco, Francesco; Shin, Sunghwan; Williams, Federico José; Heller, Bettina S. J.; Maier, Florian; et al.; Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy; Wiley VCH Verlag; ChemistryOpen; 8; 12; 12-2019; 1365-1368
2191-1363
2191-1363
CONICET Digital
CONICET
url http://hdl.handle.net/11336/123712
identifier_str_mv Greco, Francesco; Shin, Sunghwan; Williams, Federico José; Heller, Bettina S. J.; Maier, Florian; et al.; Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy; Wiley VCH Verlag; ChemistryOpen; 8; 12; 12-2019; 1365-1368
2191-1363
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/open.201900211
info:eu-repo/semantics/altIdentifier/doi/10.1002/open.201900211
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842270031053848576
score 13.13397

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