Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/11645
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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Gonçalves, M. C. | - |
dc.contributor.author | Zea Bermudez, V. de | - |
dc.contributor.author | Silva, Maria Manuela | - |
dc.contributor.author | Smith, Michael John | - |
dc.contributor.author | Morales, Enrique | - |
dc.contributor.author | Ferreira, R. A. Sá | - |
dc.contributor.author | Carlos, L. D. | - |
dc.date.accessioned | 2011-02-03T15:39:25Z | - |
dc.date.available | 2011-02-03T15:39:25Z | - |
dc.date.issued | 2010-04 | - |
dc.identifier.citation | "Ionics". ISSN 1862-0760. 16:3 (Apr. 2010 ) 193-201. | por |
dc.identifier.issn | 1862-0760 | por |
dc.identifier.uri | https://hdl.handle.net/1822/11645 | - |
dc.description.abstract | Variable 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.sponsorship | Fundação para a Ciência e a Tecnologia (FCT) | por |
dc.language.iso | eng | por |
dc.publisher | Springer | por |
dc.rights | openAccess | por |
dc.subject | Diurethanesils | por |
dc.subject | Llthium triflate | por |
dc.subject | Thermal analysis | por |
dc.subject | Complex impedance spectroscopy | por |
dc.subject | Cyclic voltammetry | por |
dc.subject | Electrochromic devices | por |
dc.subject | Lithium triflate | por |
dc.subject | DSC | por |
dc.subject | TGA | por |
dc.subject | XRD | por |
dc.subject | Complex impedance | por |
dc.title | Structure, thermal properties, conductivity and electrochemical stability of di-urethanesil hybrids doped with LiCF3SO3 | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.number | 3 | por |
sdum.pagination | 193-201 | por |
sdum.publicationstatus | published | por |
sdum.volume | 16 | por |
oaire.citationStartPage | 193 | por |
oaire.citationEndPage | 201 | por |
oaire.citationIssue | 16 | por |
oaire.citationVolume | 3 | por |
dc.identifier.doi | 10.1007/s11581-009-0409-2 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Ionics | por |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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7.diU.Trif.doc | documento principal | 4,06 MB | Microsoft Word | Ver/Abrir |