Effect of hot pressing on the ionic conductivity of the PEO/LiCF 3SO3 based electrolyte membranes

Xiangyang Zhou, Yijing Yin, Zedong Wang, Juanjuan Zhou, Hao Huang, Azzam N. Mansour, James A. Zaykoski, Jeffry J. Fedderly, Edward Balizer

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

PEO/LiCF3SO3 (LiTFS) /Ethylene carbonate (EC) polymer electrolyte membranes were prepared with a solution casting method followed by a hot pressing process. The effect of the hot pressing process on the in-plane conductivity of the PEO electrolyte membranes was evaluated using a four-electrode AC impedance method. The composition, morphology, and microstructure of the composite polymer electrolyte were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and differential scanning calorimetry (DSC). The AC impedance measurement results indicate that the hot pressing process can increase the room temperature conductivity of the membranes 14 times to 1.7 × 10- 3 S cm- 1 depending upon the duration of the hot pressing process. The SEM, FTIR, XRD, and DSC results indicate that the hot pressing process could increase the amorphous part of the polymer electrolyte membrane or convert large spherulite crystals into nano-sized crystals.

Original languageEnglish (US)
Pages (from-to)18-24
Number of pages7
JournalSolid State Ionics
Volume196
Issue number1
DOIs
StatePublished - Aug 11 2011

Keywords

  • Hot pressing
  • Ionic conductivity
  • PEO/LiTFS/EC
  • Polymer electrolyte

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Chemistry(all)

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    Zhou, X., Yin, Y., Wang, Z., Zhou, J., Huang, H., Mansour, A. N., Zaykoski, J. A., Fedderly, J. J., & Balizer, E. (2011). Effect of hot pressing on the ionic conductivity of the PEO/LiCF 3SO3 based electrolyte membranes. Solid State Ionics, 196(1), 18-24. https://doi.org/10.1016/j.ssi.2011.05.018