| Texto completo | |
| Autor(es): |
Alves, R.
[1]
;
Sentanin, F.
[2]
;
Sabadini, R. C.
[2]
;
Fernandes, M.
[3, 4]
;
de Zea Bermudez, V.
[3, 4]
;
Pawlicka, A.
[2]
;
Silva, M. M.
[1]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Minho, Ctr Dept Quim, P-4710057 Braga - Portugal
[2] Univ Sao Paulo, IQSC, Ave Trabalhador Saocarlense 400, BR-13566590 Sao Carlos, SP - Brazil
[3] Univ Tras Os Montes & Alto Douro, Escola Ciencias Vida & Ambiente, Dept Quim, Apartado 1013, P-5001801 Vila Real Codex - Portugal
[4] Univ Tras Os Montes & Alto Douro, Escola Ciencias Vida & Ambiente, CQ VR, Apartado 1013, P-5001801 Vila Real Codex - Portugal
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Electrochimica Acta; v. 267, p. 51-62, MAR 20 2018. |
| Citações Web of Science: | 6 |
| Resumo | |
New solid polymer electrolytes of chitosan doped with different concentrations of samarium triflate (Sm(CF3SO3)(3)) were prepared by solvent casting technique using glycerol as plasticizer and an acetic acid solution as solvent. The properties of the prepared polymer electrolytes have been studied by thermal analysis (thermogravimetric analysis - TGA and differential scanning calorimetry - DSC), X-Ray diffraction (XRD), scanning electron microscopy (SEM), polarized optical microscopy (POM), atomic force microscopy (AFM), energy-dispersive X-Ray spectroscopy (EDS), and impedance spectroscopy. The sample with 0.20 g of Sm(CF3SO3)(3) revealed the formation of a porous morphology, while other samples showed a presence of aggregates, proven by XRD analysis. The maximum conductivity values of 3.65 x 10(-7) S cm(-1) at 30 degrees C and 2.68 x 10(-5) S cm(-1) at 90 degrees C were achieved for the sample with 0.05 g of samarium salt. These maximum values increased to 1.68 x 10(-5) S cm(-1) at 30 degrees C and 3.87 x 10(-4) S cm(-1) at 90 degrees C, respectively, when the glycerol content increased from 0.25 to 0.70 g. Finally, because of this high conductivity values, the sample with higher glycerol content was tested in small electrochromic devices (ECD) that confirmed its potential for this kind of applications. (c) 2018 Elsevier Ltd. All rights reserved. (AU) | |
| Processo FAPESP: | 14/17174-4 - Propriedades refletivas dos dispositivos eletrocrômicos com eletrólitos poliméricos |
| Beneficiário: | Agnieszka Joanna Pawlicka Maule |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |