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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

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Abstract

The preparation of l-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BmlmTFSI)-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) x 10−4 S/cm by adding 60 wt% of BmlmTFSI. 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 BmlmTFSI, as shown in the infrared spectra.

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Acknowledgment

This work was supported by the Exploratory Research Grant Scheme (ERGS: ER017-2011A) and Universiti Malaya Research Grant (UMRG: RG140-11AFR). One of the co-author gratefully acknowledges the “Skim Bright Sparks University Malaya (SBSUM)” for the financial support.

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Authors and Affiliations

  1. Department of Physics, Centre for Ionics University Malaya, Faculty of Science, University of Malaya, Lembah Pantai, 50603, Kuala Lumpur, Malaysia

    Chiam-Wen Liew & S. Ramesh

  2. Department of Mechanical and Material Engineering, Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Setapak, 53300, Kuala Lumpur, Malaysia

    R. Durairaj

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  1. Chiam-Wen Liew
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  2. S. Ramesh
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  3. R. Durairaj
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Correspondence to S. Ramesh.

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Liew, CW., Ramesh, S. & Durairaj, R. Impact of low viscosity ionic liquid on PMMA-PVC-LiTFSI polymer electrolytes based on AC -impedance, dielectric behavior, and HATR-FTIR characteristics. Journal of Materials Research 27, 2996–3004 (2012). https://doi.org/10.1557/jmr.2012.343

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