Ion Distributions at ElectrifiedWater-Organic Interfaces: PB-PMF Calculations and Impedance Spectroscopy Measurements

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dc.contributor.authorHou, Binyangcs
dc.contributor.authorBu, Weics
dc.contributor.authorLuo, Guangmingcs
dc.contributor.authorVanýsek, Petrcs
dc.contributor.authorSchlossman, Markcs
dc.coverage.issue12cs
dc.coverage.volume162cs
dc.date.accessioned2021-08-20T10:52:10Z
dc.date.available2021-08-20T10:52:10Z
dc.date.issued2015-09-07cs
dc.description.abstractThe interface between two immiscible electrolyte solutions consisting of alkali chlorides in water and the organic electrolyte BTPPATPFB in 1,2-dichloroethane is characterized with X-ray reflectivity, interfacial tension and impedance spectroscopy measurements over a range of applied voltage between the bulk solutions. X-ray reflectivity probes the interfacial ion distribution on the sub-nanometer length scale, whereas interfacial tension and impedance spectroscopy characterize quantities such as interfacial excess charge and differential capacitance that represent integrations over the interfacial ion distribution. Predictions of interfacial ion distributions by the recently introduced PB-PMF method, which combines Poisson's equation with ion potentials of mean force, provide excellent agreement, within one to two experimental standard deviations, with both X-ray reflectivity and interfacial tension measurements. However, the agreement with the differential capacitance measured by impedance spectroscopy, and modeled by the Randles equivalent circuit, is not as good. Values of measured and calculated differential capacitance can deviate by as much as 20% for applied electric potential differences larger than approximately ±100 mV. These comparisons indicate that our understanding of the ion distributions that underlie these measurements is adequate, but that further understanding of the modeling of impedance spectroscopy data is required for quantitative agreement at larger applied electric potential differences.en
dc.description.abstractRozhraní mezi dvě nemísitelnými roztoky elektrolytu, sestávající z alkalických chloridů ve vodě a organického elektrolytu BTPPATPFB v 1,2-dichlorethanu, je zkoumáno RTG odrazivostí, mezifázovým napětím a měřením impedanční spektroskopií.cs
dc.formattextcs
dc.format.extentH890-H897cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJOURNAL OF THE ELECTROCHEMICAL SOCIETY. 2015, vol. 162, issue 12, p. H890-H897.en
dc.identifier.doi10.1149/2.0621512jescs
dc.identifier.issn0013-4651cs
dc.identifier.other116177cs
dc.identifier.urihttp://hdl.handle.net/11012/201076
dc.language.isoencs
dc.publisherThe Electrochemical Societycs
dc.relation.ispartofJOURNAL OF THE ELECTROCHEMICAL SOCIETYcs
dc.relation.urihttps://iopscience.iop.org/article/10.1149/2.0621512jescs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0013-4651/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectImpedanceen
dc.subjectmodellingen
dc.subjectITIESen
dc.subjectPB-PMFen
dc.subjectImpedance
dc.subjectmodelování
dc.subjectITIES
dc.subjectPB-PMF
dc.titleIon Distributions at ElectrifiedWater-Organic Interfaces: PB-PMF Calculations and Impedance Spectroscopy Measurementsen
dc.title.alternativeIontové rozdělení mezi elektricky polarizovaným rozhraním woda-organika: Kalkulace PB-PMF a meření impedanční spektroskopiícs
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-116177en
sync.item.dbtypeVAVen
sync.item.insts2021.08.20 12:52:10en
sync.item.modts2021.08.20 12:14:19en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé keramické materiálycs
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