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Effect of nanoporous alumina filler on conductivity enhancement in PEO9(MgClO4)2 polymer electrolyte: a 1H NMR study

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Abstract

Ionic conductivity, differential scanning calorimetry (DSC), and 1H nuclear magnetic resonance (NMR) measurements have been performed on (PEO)9Mg(ClO4)2 and (PEO)9Mg(ClO4)2 + Al2O3 (neutral, nanoporous) polymer electrolyte systems. It is observed that the conductivity enhances due to the presence of filler up to 15 wt.% and then decreases. The NMR results are consistent with the idea that the conductivity enhancement is mainly due to the increase in chain mobility and ionic mobility of the solid polymer electrolyte caused by increased amorphocity of the electrolyte due to the presence of filler. DSC results also demonstrate that the fraction of the amorphous phase has increased due to the addition of the filler.

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Acknowledgments

W.D.D. Wijesiri is acknowledged for her help during this work. Authors wish to thank the International Programmes in the Physical Sciences (IPPS), Uppsala University, Sweden for research support.

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Authors and Affiliations

  1. Department of Physics, University of Peradeniya, Peradeniya, Sri Lanka

    P. Ekanayake & M. A. K. L. Dissanayake

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  1. P. Ekanayake
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  2. M. A. K. L. Dissanayake
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Correspondence to P. Ekanayake.

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Ekanayake, P., Dissanayake, M.A.K.L. Effect of nanoporous alumina filler on conductivity enhancement in PEO9(MgClO4)2 polymer electrolyte: a 1H NMR study. J Solid State Electrochem 13, 1825–1829 (2009). https://doi.org/10.1007/s10008-008-0768-z

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  • DOI: https://doi.org/10.1007/s10008-008-0768-z

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