A comparative study on the effects of salt and filler on transport and structural properties of organic–inorganic hybrid electrolytes

Tarng Shiang Hu, Peng Kai Hong, Diganta Saikia, Hsien Ming Kao, Ming Chou Chen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Organic–inorganic hybrid electrolytes based on the reaction of tri-block copolymer poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol) bis(2-aminopropyl ether), poly(ethylene glycol diglycidyl ether, and (3-glycidyloxypropyl)trimethoxysilane doped with LiClO4 and SiO2 nanoparticles were synthesized by a sol–gel process. The structural and dynamic properties of the materials thus obtained were systematically investigated by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, alternate current impedance, and 13C solid-state NMR measurements. A maximum ionic conductivity of 3.2 × 10−5 S cm−1 was obtained at 30 °C for the solid hybrid electrolyte with a [O]/[Li] ratio of 16 and 7 wt% of SiO2 nanoparticles. A Vogel–Tamman–Fulcher-like temperature dependence of ionic conductivity was observed for the hybrid electrolytes, implying that the diffusion of charge carriers was assisted by the segmental motions of the polymer chains.

Original languageEnglish
Pages (from-to)1561-1571
Number of pages11
JournalIonics
Volume20
Issue number11
DOIs
StatePublished - 15 Oct 2014

Keywords

  • Differential scanning calorimetry
  • Ionic conductivity
  • Nuclear magnetic resonance
  • Organic–inorganic hybrid electrolyte

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