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Structural, thermal, and impedance properties of a gel polymer electrolyte containing ionic liquid
Author(s) -
Tang Zhenglin,
Qi Li,
Gao Guitian
Publication year - 2010
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1408
Subject(s) - materials science , electrolyte , methyl methacrylate , ionic liquid , copolymer , tetrafluoroborate , polymer , methacrylate , polymer chemistry , ethylene glycol , acrylonitrile , ionic bonding , side chain , chemical engineering , chemistry , ion , organic chemistry , composite material , catalysis , electrode , engineering
The gel polymer electrolytes composed of ionic liquid, 1‐butyl‐3‐methylimidazolium tetrafluoroborate (BMImBF 4 ) and the copolymer of acrylonitrile (AN), methyl methacrylate (MMA), poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) are synthesized and characterized by FT‐IR spectra, TGA, DSC, and AC impedance measurements. IR spectra show that there is an interaction between PEO side chains of the copolymer and imidazolium cations. TGA measurements indicate that the gel polymer electrolytes are stable until 120°C. By using the equivalent circuit proposed, the experimental data and the simulated data fit very well. The bulk resistance R b is found to decrease with the increase in BMImBF 4 content. Copyright © 2009 John Wiley & Sons, Ltd.