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Impact of low viscosity ionic liquid on PMMA–PVC–LiTFSI polymer electrolytes based on AC -impedance, dielectric behavior, and HATR–FTIR characteristics

Published online by Cambridge University Press:  30 October 2012

Chiam-Wen Liew ,
S. Ramesh  and
R. Durairaj
Chiam-Wen Liew
Affiliation:
Department of Physics, Centre for Ionics University Malaya, Faculty of Science, University of Malaya, Lembah Pantai, 50603 Kuala Lumpur, Malaysia
S. Ramesh*
Affiliation:
Department of Physics, Centre for Ionics University Malaya, Faculty of Science, University of Malaya, Lembah Pantai, 50603 Kuala Lumpur, Malaysia
R. Durairaj
Affiliation:
Department of Mechanical and Material Engineering, Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Setapak, 53300 Kuala Lumpur, Malaysia
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

The preparation of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BmImTFSI)-based poly(methyl methacrylate)–poly(vinyl chloride), PMMA–PVC, gel polymer electrolytes was done by solution casting technique. The ionic conductivity of gel polymer electrolytes was increased, up to a maximum value of (1.64 ± 0.01) × 10−4S/cm by adding 60 wt% of BmImTFSI. Conductivity–frequency dependence, dielectric relaxation, and dielectric moduli formalism were also further analyzed. These studies assert the ionic transportation mechanisms in the polymer matrix. Occurrence of polarization electrode–electrolyte interface is also observed. This leads to the formation of electrical double layer and hence indicates the non-Debye characteristic of the polymer matrix in the dielectric studies. Based on the changes in shift, changes in intensity, changes in shape, and existence of new peaks, attenuated total reflectance–Fourier transform infrared divulged the complexation between PMMA, PVC, lithium bis(trifluoromethanesulfonyl)imide, and BmImTFSI, as shown in the infrared spectra.

Keywords

ionic conductordielectric propertiesstructural
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 23 , 14 December 2012 , pp. 2996 - 3004
Copyright
Copyright © Materials Research Society 2012

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