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TitleSolid polymer electrolytes based on chitosan and dy(CF3SO3)3 for electrochromic devices
Author(s)Alves, Raquel Diana Carneiro
Sentanin, Franciani Cássia
Sabadini, Rodrigo
Pawlicka, Agnieszka
Silva, Maria Manuela
Dysprosium triflate
Electrochromic devices
Electrochrornic devices
Issue date2017
PublisherElsevier Science BV
JournalSolid State Ionics
Abstract(s)In the present work, one host natural matrix (chitosan) was doped with glycerol and different amounts of dysprosium triflate salt (Dy(CF3SO3)3). The behaviour of the electrolytes was evaluated by thermal analyses (thermogravimetric analysis – TGA and differential scanning calorimetry – DSC), impedance spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and atomic force microscopy (AFM). Sample with 0.15 g of Dy(CF3SO3)3 showed the best ionic conductivity values of 1.85x10-7 and 9.55x10-6 S cm-1 at 30 and 90 ºC, respectively. The lower values obtained for the other samples may be due to the appearance of aggregates, which corroborates with the XRD and SEM results. The new sample prepared with higher glycerol amount showed the highest conductivity values, namely 1.31x10-5 and 5.05x10-4 Scm-1 at 30 and 90 ºC respectively, so it was used to produce small electrochromic devices, which behaviour was evaluated.
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Appears in Collections:CDQuim - Artigos (Papers)

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