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Lithium ion-conducting polymer electrolytes based on PVA–PAN doped with lithium triflate

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Abstract

Blend polymer electrolytes with optimized composition (92.5 PVA:7.5 PAN) doped with lithium triflate (LiCF3SO3) have been prepared in different concentrations by solution casting technique, using DMF as solvent. The prepared electrolytes have been characterized by XRD, FTIR, DSC, AC impedance, and SEM techniques. The complex formation between the blend polymer and the salt has been confirmed by X-ray diffraction and FTIR analyses. Differential scanning calorimetry thermogram has shown a decrease in glass transition temperature with the addition of salt. It has been observed that the ionic conductivity of the doped blend polymer electrolyte increases as the salt concentration increases. The ionic conductivity has been found to be 4.0 × 10−5 S cm−1 for 92.5 PVA:7.5 PAN:50 M wt% LiCF3SO3 sample at room temperature. The temperature dependence of ionic conductivity has been studied with Arrhenius plot and the activation energies have been calculated. Primary lithium ion battery has been constructed with the configuration Zn + ZnSO4 7H2O/ 92.5 PVA:7.5 PAN:50 M wt% LiCF3SO3/ PbO2 + V2O5 using the maximum conducting blend polymer, and its discharge characteristics have been studied.

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Authors and Affiliations

  1. Research and Development Centre, Bharathiar University, Coimbatore, Tamil Nadu, India

    F. Kingslin Mary Genova

  2. Department of Physics, The S.F.R. College for Women, Sivakasi, Tamil Nadu, India

    F. Kingslin Mary Genova, N. Vijaya & S. Sivadevi

  3. Materials Research Centre, Coimbatore, Tamil Nadu, -641 045, India

    F. Kingslin Mary Genova, S. Selvasekarapandian & M. Premalatha

  4. Department of Physics, Madras Christian College, Chennai, Tamil Nadu, India

    S. Karthikeyan

Authors
  1. F. Kingslin Mary Genova
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  2. S. Selvasekarapandian
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  3. N. Vijaya
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  4. S. Sivadevi
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  5. M. Premalatha
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  6. S. Karthikeyan
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Correspondence to S. Selvasekarapandian.

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Kingslin Mary Genova, F., Selvasekarapandian, S., Vijaya, N. et al. Lithium ion-conducting polymer electrolytes based on PVA–PAN doped with lithium triflate. Ionics 23, 2727–2734 (2017). https://doi.org/10.1007/s11581-017-2052-7

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  • DOI: https://doi.org/10.1007/s11581-017-2052-7

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