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dc.contributor.author
Greco, Francesco
dc.contributor.author
Shin, Sunghwan
dc.contributor.author
Williams, Federico José
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Heller, Bettina S. J.
dc.contributor.author
Maier, Florian
dc.contributor.author
Steinrück, Hans Peter
dc.date.available
2021-01-26T13:51:49Z
dc.date.issued
2019-12
dc.identifier.citation
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
dc.identifier.issn
2191-1363
dc.identifier.uri
http://hdl.handle.net/11336/123712
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley VCH Verlag
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
BINDING ENERGIES
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ELECTRODES
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IONIC LIQUIDS
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PHOTOELECTRON SPECTROSCOPY
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POTENTIAL SCREENING
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-20T14:43:38Z
dc.identifier.eissn
2191-1363
dc.journal.volume
8
dc.journal.number
12
dc.journal.pagination
1365-1368
dc.journal.pais
Alemania
dc.description.fil
Fil: Greco, Francesco. Universitat Erlangen-Nuremberg; Alemania
dc.description.fil
Fil: Shin, Sunghwan. Universitat Erlangen-Nuremberg; Alemania
dc.description.fil
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
dc.description.fil
Fil: Heller, Bettina S. J.. Universitat Erlangen-Nuremberg; Alemania
dc.description.fil
Fil: Maier, Florian. Universitat Erlangen-Nuremberg; Alemania
dc.description.fil
Fil: Steinrück, Hans Peter. Universitat Erlangen-Nuremberg; Alemania
dc.journal.title
ChemistryOpen
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/open.201900211
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/open.201900211
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