Ion-conducting membranes based on gelatin and containing LiI/I-2 for electrochromic devices

Ponez, L. and Sentanin, F.C. and Majid, Siti Rohana and Arof, Abdul Kariem and Pawlicka, A. (2012) Ion-conducting membranes based on gelatin and containing LiI/I-2 for electrochromic devices. Molecular Crystals and Liquid Crystals, 554. pp. 239-251. ISSN 1542-1406

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Ionic conducting membranes of gelatin plasticized with glycerol and containing LiI/I-2 have been obtained and characterized by X-ray diffraction measurements, UV-Vis-NIR spectroscopy, thermal analysis and impedance spectroscopy. The transparent (80-90% in the visible range) membranes showed ionic conductivity value of 5 x 10(-5) S/cm at room temperature, which increased to 3 x 10(-3) S/cm at 80 degrees C. All the ionic conductivity measurements as a function of temperature showed VTF dependence and activation energy of 8 kJ/mol. These samples also showed low glass transition temperature of -76 degrees C. Moreover the samples were predominantly amorphous. The membranes applied to small electrochromic devices showed 20% of color change from colored to bleached states during more than 70 cronoamperometric cycles.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Electrochromic devices; Gel polymer electrolytes; Gelatin; Ionic conductivity; Polymer electrolytes; Films; Plasticizer; Transglutaminase; Resonance; Glycerol; Spectra; Iodide; Liclo4; Raman
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 17 Jul 2013 00:58
Last Modified: 27 Aug 2019 01:13

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