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Field enhanced Li ion conduction in nanoferroelectric modified polymer electrolyte systems

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Abstract

Nanocomposite polymer electrolyte (NCPE) films based on polyethylene oxide (PEO) complexed with lithium perchlorate (LiClO4) and nanosized ferroelectric ceramic fillers such as BaTiO3, SrTiO3 have been prepared using solution cast technique. The films showed very good mechanical stability when exposed to ambient atmospheres for prolonged periods. Lithium ion transport studies revealed that the conductivity is predominantly ionic. The effect of electric field on ionic conductivity of NCPE films was investigated. One order enhancement in conductivity due to the field was observed at 323 K. NCPE films exhibited conductivity of 3.46 × 10−5 Scm−1 at 323 K. NCPE films were characterized using differential scanning calorimetry (DSC) and X-ray diffraction (XRD) technique. The DSC and XRD studies revealed reduced crystallinity which confirmed the higher amorphous phase and hence the improved ionic conductivity.

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Acknowledgments

The authors thank Visvesvaraya Technological University, Belgaum, India for the financial support for this work under research project grant. The authors also thank Dr. Praveen C. Ramamurthy, Indian Institute of Science, Bangalore, for facilitating the XRD studies.

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  1. Department of Physics, PES Institute of Technology, Bangalore, Karnataka, 560085, India

    Sunitha V. R. &  Radhakrishnan S.

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  1. Sunitha V. R.
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  2. Radhakrishnan S.
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Correspondence to Sunitha V. R..

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Sunitha V. R., Radhakrishnan S. Field enhanced Li ion conduction in nanoferroelectric modified polymer electrolyte systems. Ionics 21, 949–954 (2015). https://doi.org/10.1007/s11581-014-1252-7

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  • DOI: https://doi.org/10.1007/s11581-014-1252-7

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