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A study incorporating nano-sized silica into PVC-blend-based polymer electrolytes for lithium batteries

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Abstract

Blends of poly(vinyl chloride)-poly(methyl methacrylate) (PVC/PMMA) and poly(vinyl chloride)-poly(ethylene oxide) (PVC/PEO) with lithium triflate (LiCF3SO3) as salt, ethylene carbonate (EC), and dibuthyl phthalate (DBP) as plasticizers and nano-sized silica (SiO2) as filler, the first of its kind in such a study, were prepared using the solution-cast technique. This study affirmed that SiO2 added PVC-PMMA and PVC-PEO-blend-based polymer electrolytes have the ability to retain their ionic conductivity and integrity even after 60 days of storage time at room temperature. The reduction of ionic conductivity values in PVC-PMMA-LiCF3SO3-DBP-EC:SiO2-based and SiO2-free membranes are 9 and 30%, respectively. When PVC-PEO-blend was used, the reduction of ionic conductivity values in PVC-PEO-LiCF3SO3-DBP-EC:SiO2-based and SiO2-free system was 16 and 40%, respectively, after 60 days of storage also at room temperature. The SiO2-based complexes were also found to maintain their conductivity at higher temperatures of 60 °C and 90 °C with progressive storage times. This clearly shows that the SiO2-induced stabilizing effect is maintained even at higher temperatures. Silica has brought the conductivity of polymer electrolytes into the useful realm for materials in lithium polymer battery applications.

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Authors and Affiliations

  1. Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Setapak, 53300, Kuala Lumpur, Malaysia

    S. Ramesh

  2. Physics Department, University of Malaya, 50603, Kuala Lumpur, Malaysia

    A. K. Arof

Authors
  1. S. Ramesh
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  2. A. K. Arof
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Correspondence to S. Ramesh.

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Ramesh, S., Arof, A.K. A study incorporating nano-sized silica into PVC-blend-based polymer electrolytes for lithium batteries. J Mater Sci 44, 6404–6407 (2009). https://doi.org/10.1007/s10853-009-3883-z

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  • DOI: https://doi.org/10.1007/s10853-009-3883-z

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