Characteristics of PEMA/PVdF-HFP blend polymeric gel films incorporated with lithium triflate salt in electrochromic device

Sim, L.N. and Majid, Siti Rohana and Arof, Abdul Kariem (2012) Characteristics of PEMA/PVdF-HFP blend polymeric gel films incorporated with lithium triflate salt in electrochromic device. Solid State Ionics, 209. pp. 15-23. ISSN 0167-2738

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Official URL: https://doi.org/10.1016/j.ssi.2011.11.035

Abstract

Poly(ethyl methacrylate), PEMA and poly(vinylidenefluoride-co-hexafluoropropylene), PVdF-HFP have been blended in the weight ratio 70:30. The blend has been incorporated with lithium trifluoromethanesulfonate (LiCF3SO3) and added with ethylene carbonate (EC) and propylene carbonate (PC). The sample 70 wt.% PEMA/PVdF-HFP - 30 wt.% LiCF3SO3 exhibits the highest room temperature ionic conductivity of 2.87 x 10(-7) S cm(-1) for the blend-salt system. The sample in the PC system (designated 6PC) has the highest room temperature conductivity of 1.46 x 10(-6) S cm(-1). The highest conducting EC system has conductivity of 1.05 x 10(-4) S cm(-1) and the sample is designated as 6EC. The polymeric gel electrolytes are transparent and mechanically stable at room temperature. An electrochromic device (ECD) with configuration glass/FTO/WO3/sample/CeO2-TiO2/FTO/glass utilizing S30, 6PC and 6EC as electrolytes have been fabricated. The cyclic voltammogram (CV) of glass/FTO/WO3/6EC/CeO2-TiO2/FTO/glass shows a cathodic peak occurring at -1.3 V upon coloration while an anodic peak is observed at -0.8 V during bleaching process. (c) 2011 Elsevier B.V. All rights reserved.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Pema; Pvdf-hfp; Conductivity, cyclic voltammetry; Electrochromic device; Ionic-conductivity; Glass-transition; Electrolytes; Transport; State; Ftir; Pmma; Chitosan; Windows; Liquid
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 17 Jul 2013 00:57
Last Modified: 27 Aug 2019 01:08
URI: http://eprints.um.edu.my/id/eprint/7700

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