Electrochromism of W-Ti Oxide Thin Films: Cycling Durability, Potentiostatic Rejuvenation, and Modelling of Electrochemical Degradation

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dc.authoridSORAR, IDRIS/0000-0002-1082-7576
dc.contributor.authorSorar, Idris
dc.contributor.authorRojas-Gonzalez, Edgar A.
dc.contributor.authorPehlivan, Ilknur Bayrak
dc.contributor.authorGranqvist, Claes G.
dc.contributor.authorNiklasson, Gunnar A.
dc.date.accessioned2024-09-18T21:06:26Z
dc.date.available2024-09-18T21:06:26Z
dc.date.issued2019
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractThin films of electrochromic W oxide and W-Ti oxide were prepared by reactive DC magnetron sputtering and were cycled voltammetrically in an electrolyte of lithium perchlorate in propylene carbonate. Film degradation was studied for up to 500 voltammetric cycles in voltage ranges between 1.5-4.0 and 2.0-4.0 V vs. Li/Li+. Optically and electrochemically degraded films were subjected to potentiostatic posttreatment at 6.0 V vs. Li/Li+ to achieve ion de-trapping and rejuvenation so that the films partly regained their original properties. Ti incorporation and potentiostatic posttreatment jointly yielded superior electrochromic properties provided the lower limit of the voltage range was above 1.6-1.7 V vs. Li/Li+. Degradation dynamics for as-deposited and rejuvenated thin films was modeled successfully by power-law kinetics; this analysis indicated coexistence of two degradation mechanisms, one based on dispersive chemical kinetics and operating universally and another, of unknown origin, rendered inactive by rejuvenation. The results of the present study are of large interest for the development of electrochromic devices with exceptional durability. (C) 2019 The Electrochemical Society.en_US
dc.description.sponsorshipSwedish Research Council [VR-2016-03713]; Scientific and Technological Research Council of Turkey (TUBITAK); University of Costa Rica; VR-RFI [2017-00646-9]; Swedish Foundation for Strategic Research [RIF14-0053]en_US
dc.description.sponsorshipFinancial support from the Swedish Research Council (contract VR-2016-03713) is gratefully acknowledged. IS thanks the Scientific and Technological Research Council of Turkey (TUBITAK) for financial support to work at Uppsala University. EARG is grateful for support from the University of Costa Rica. Daniel Primetzhofer and the staff at the Tandem Accelerator Laboratory of Uppsala University are thanked for assistance with ToF-ERDA measurements. Support by VR-RFI (contract 2017-00646-9) and the Swedish Foundation for Strategic Research (contract RIF14-0053) for accelerator operation is gratefully acknowledged.en_US
dc.identifier.doi10.1149/2.0421915jes
dc.identifier.endpageH801en_US
dc.identifier.issn0013-4651
dc.identifier.issn1945-7111
dc.identifier.issue15en_US
dc.identifier.scopus2-s2.0-85076084479en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpageH795en_US
dc.identifier.urihttps://doi.org/10.1149/2.0421915jes
dc.identifier.urihttps://hdl.handle.net/20.500.12483/13597
dc.identifier.volume166en_US
dc.identifier.wosWOS:000494283100001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElectrochemical Soc Incen_US
dc.relation.ispartofJournal of The Electrochemical Societyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectWo3 Filmsen_US
dc.subjectDynamicsen_US
dc.subjectLifetimeen_US
dc.subjectGrowthen_US
dc.subjectDeviceen_US
dc.titleElectrochromism of W-Ti Oxide Thin Films: Cycling Durability, Potentiostatic Rejuvenation, and Modelling of Electrochemical Degradationen_US
dc.typeArticleen_US

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