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HomeKey Engineering MaterialsKey Engineering Materials Vol. 519Preparation and Characterization of Polymer...

Preparation and Characterization of Polymer Electrolyte Based on Comb-Shaped Poly(oxyethylene) with Ether Side Chains

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Abstract:

A kind of comb-shaped poly(oxyethylene) with nine oxyethylene units in ether side chains has been synthesized via chemical modification on ethylene oxide-epichlorohydrin copolymer [P(EO/EH)s] with a kind of alcohol ether carboxylate. The prepared polyether was characterized by FTIR spectroscopy. A series of polymer electrolytes were prepared by dissolving LiN(SO₂CF₃)₂ at different ratios in the polymer matrix. It is found that the ionic conductivity of the comb-shaped poly(oxyethylene) based polymer electrolytes could reach 4.3×10^-5 S/cm at 30°C and 6.2×10-4 S/cm at 80°C, which increase by an order of magnitude compared with that of poly(ethylene oxide) (PEO) based ones at corresponding temperatures. Both the amorphous feature of the polymer electrolytes above the ambient temperature and the highly mobile ether side chains of the comb-shaped polyether contribute to the increase of ionic conductivity.

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Periodical:

Key Engineering Materials (Volume 519)

Pages:

14-19

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.519.14

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Online since:

July 2012

Authors:

Lian Bai, Ming Li, Ce Wen Nan

Keywords:

Comb-Shaped Poly(oxyethylene), Ethylene Oxide-Epichlorohydrin Copolymer, Ionic Conductivity, Polymer Electrolyte

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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