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UV-cured hybrid inorganic-organic polymer electrolyte based on organically modified polysiloxane

  • Wei-li Qiu
  • Xiao-Hua Ma
  • Qing-he Yang
  • Yan-bao Fu
  • Xiang-fu Zong
Article

Abstract

Hybrid inorganic-organic polymer electrolyte based on the monomer of organically modified polysiloxane was prepared by UV radiation curing in the presence of liquid electrolyte. The organically modified polysiloxane monomer with acrylate groups at the terminal position was synthesized by hydrolytic condensation of tetramethoxysilane (TMOS) and followed by demethanolation reaction using 2-hydroxyethyl acrylate (2-HEA). The rational formula of the monomer was SiO1.1436(OH)0.01606(OCH3)1.3394(OCH2CH2OCOCH= CH2)0.3574 which was determined by proton nuclear magnetic resonance (1H-NMR) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy and silica analysis. The monomer was polyfunctional with a number average molecular weight of 1185 and a weight average molecular weight of 2292 determined by GPC analysis. The electrochemical properties of the hybrid inorganic-organic polymer electrolyte were determined by ac impedance spectroscopy and cyclic voltammetry. Ionic conductivity was greatly enhanced with increasing amounts of liquid electrolyte. When the polymer electrolyte contained 80 wt% liquid electrolytes, the conductivities were around 3.3 × 10−3 S cm−1 at 21°C and 8.0 × 10−4 S cm−1 even at −23°C. Interface resistance increased initially and reached a steady value after 2 days. Oxidation stability was up to 5.0 V against the lithium reference electrode and electrochemical plating/stripping of lithium on the stainless steel electrode was reversible.

Keywords

Nuclear Magnetic Resonance Acrylate Polymer Electrolyte Oxidation Stability Average Molecular Weight 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Wei-li Qiu
    • 1
  • Xiao-Hua Ma
    • 1
  • Qing-he Yang
    • 1
  • Yan-bao Fu
    • 1
  • Xiang-fu Zong
    • 1
  1. 1.Department of Materials ScienceFudan UniversityShanghaiPeople’s Republic of China

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