Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/11645

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dc.contributor.authorGonçalves, M. C.-
dc.contributor.authorZea Bermudez, V. de-
dc.contributor.authorSilva, Maria Manuela-
dc.contributor.authorSmith, Michael John-
dc.contributor.authorMorales, Enrique-
dc.contributor.authorFerreira, R. A. Sá-
dc.contributor.authorCarlos, L. D.-
dc.date.accessioned2011-02-03T15:39:25Z-
dc.date.available2011-02-03T15:39:25Z-
dc.date.issued2010-04-
dc.identifier.citation"Ionics". ISSN 1862-0760. 16:3 (Apr. 2010 ) 193-201.por
dc.identifier.issn1862-0760por
dc.identifier.urihttp://hdl.handle.net/1822/11645-
dc.description.abstractVariable chain length di-urethane cross-linked poly(oxyethylene) (POE)/siloxane hybrid networks were prepared by application of a sol-gel strategy. These materials, designated as di-urethanesils (represented as d-Ut(Y’), where Y’ indicates the average molecular weight of the polymer segment), were doped with lithium triflate (LiCF3SO3). The two host hybrid matrices used, d-Ut(300) and d-Ut(600), incorporate POE chains with approximately 6 and 13 (OCH2CH2) repeat units, respectively. All the samples studied, with compositions ∞ > n ≥ 1 (where n is the molar ratio of (OCH2CH2) repeat units per Li+),, are entirely amorphous. The di-urethanesils are thermally stable up to at least 200 ºC. At room temperature the conductivity maxima of the d-Ut(300)- and d-Ut(600)-based di-urethanesil families are located at n = 1 (approximately 2.0x10-6 and 7.4x10-5 Scm-1, respectively). At about 100 ºC, both these samples also exhibit the highest conductivity of the two electrolyte systems (approximately 1.6x10-4 and 1.0x10-3 Scm-1, respectively). The d-Ut(600)-based xerogel with n = 1 displays excellent redox stability.por
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT)por
dc.language.isoengpor
dc.publisherSpringer por
dc.rightsopenAccesspor
dc.subjectDiurethanesilspor
dc.subjectLlthium triflatepor
dc.subjectThermal analysispor
dc.subjectComplex impedance spectroscopypor
dc.subjectCyclic voltammetrypor
dc.subjectElectrochromic devicespor
dc.subjectLithium triflatepor
dc.subjectDSCpor
dc.subjectTGApor
dc.subjectXRDpor
dc.subjectComplex impedancepor
dc.titleStructure, thermal properties, conductivity and electrochemical stability of di-urethanesil hybrids doped with LiCF3SO3por
dc.typearticlepor
dc.peerreviewedyespor
sdum.number3por
sdum.pagination193-201por
sdum.publicationstatuspublishedpor
sdum.volume16por
oaire.citationStartPage193por
oaire.citationEndPage201por
oaire.citationIssue16por
oaire.citationVolume3por
dc.identifier.doi10.1007/s11581-009-0409-2por
dc.subject.wosScience & Technologypor
sdum.journalIonicspor
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