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Journal of Solid State Electrochemistry

, Volume 16, Issue 5, pp 1869–1875 | Cite as

Preparation and characterization of lithium ion conducting ionic liquid-based biodegradable corn starch polymer electrolytes

  • Chiam-Wen Liew
  • S. Ramesh
  • K. Ramesh
  • A. K. Arof
Original Paper

Abstract

Thin films of biodegradable corn starch-based biopolymer electrolytes were prepared by solution casting technique. Lithium hexafluorophosphate (LiPF6) and 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BmImTf) were employed as lithium salt and ionic liquid, respectively. With reference to the temperature dependence study, Arrhenius relationship was observed. The highest ionic conductivity of (6.00 ± 0.01) × 10−4 S cm−1 was obtained at 80 °C. Based on x-ray diffraction (XRD) result, the peaks became broader with doping of ionic liquid revealing the higher amorphous region of the biopolymer electrolytes. Ionic liquid-based biopolymer electrolytes exhibited lower glass transition temperature (T g).

Keywords

Corn starch BmImTf XRD DSC 

Notes

Acknowledgment

This work was supported by the Fundamental Research Grant Scheme (FRGS) from Ministry of Higher Education, Malaysia (FP009/2010B). One of the authors, Chiam-Wen Liew, gratefully acknowledges the “Skim Bright Sparks Universiti Malaya (SBSUM)” for the financial support.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Chiam-Wen Liew
    • 1
  • S. Ramesh
    • 1
  • K. Ramesh
    • 1
  • A. K. Arof
    • 1
  1. 1.Centre for Ionics University Malaya, Department of Physics, Faculty of ScienceUniversity of MalayaKuala LumpurMalaysia

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