A comparative study of coordination between host polymers and Li+ ions in UV-cured gel polymer electrolytes

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Crosslinked gel polymer electrolytes are prepared via free radical photo-polymerization of 1,6-hexanediol diacrylate (HDDA) or tri(ethylene glycol) diacrylate (TEGDA) with 1 M LiClO4 dissolved in a solvent mixture of ethylene carbonate (EC) and propylene carbonate (PC). TEGDA-based gel polymer electrolytes containing a polar moiety of ethylene oxide exhibit relatively high ionic conductivities over a temperature range from -15 to 65 degrees C in comparison to those based on HDDA. The coordination structure between polar moieties of a polymer backbone and Li+ ions is examined using a Fourier transform infrared (FT-IR) spectroscopy. The results of FT-IR analyses manifest that the C=O and C-O-C groups of TEGDA-based polymer matrix form the complex with Li+ ions. (C) 2009 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2009-08
Language
English
Article Type
Article
Keywords

DIFFERENT LITHIUM-SALTS; PROPYLENE CARBONATE; ETHYLENE CARBONATE; CONDUCTIVITY; BATTERIES; SYSTEMS

Citation

SOLID STATE IONICS, v.180, no.20-22, pp.1204 - 1208

ISSN
0167-2738
DOI
10.1016/j.ssi.2009.06.005
URI
http://hdl.handle.net/10203/100698
Appears in Collection
CBE-Journal Papers(저널논문)
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