Ionically conductive polymer gel electrolytes consisting of crosslinked methacrylonitrile and organic electrolyte

To develop a highly ion‐conductive polymer electrolyte, we copolymerized methacrylonitrile (MAN) with ethylene glycol dimethacrylate (EGDMA) in propylene carbonate that contained tetraethylammonium tetrafluoroborate (TEATFB), changing the TEATFB concentration and the MAN/EGDMA molar ratio. We charac...

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Bibliographic Details
Published in:Journal of applied polymer science 2002-03, Vol.83 (12), p.2655-2659
Main Authors: Kubota, Naoji, Fujii, Shigetada, Tatsumoto, Nobuhide, Sano, Takayuki
Format: Article
Language:English
Subjects:
copolymerization
crosslinking
electrochemistry
ethylene glycol dimethacrylate
gels
ionic conductivity
methacrylonitrile
polymer gel electrolyte
tetraethylammonium tetrafluoroborate
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Summary:To develop a highly ion‐conductive polymer electrolyte, we copolymerized methacrylonitrile (MAN) with ethylene glycol dimethacrylate (EGDMA) in propylene carbonate that contained tetraethylammonium tetrafluoroborate (TEATFB), changing the TEATFB concentration and the MAN/EGDMA molar ratio. We characterized the obtained polymer gel electrolytes with complex impedance analysis and cyclic voltammetry, intending to apply them to electric double‐layer capacitors. The ionic conductivities of the polymer gel electrolytes were dependent on the TEATFB concentration, the temperature, and particularly the crosslinking degree. The polymer gel electrolytes in this system exhibited high room‐temperature conductivities (>10−3 S/cm). Furthermore, these polymer electrolytes showed good electrochemical stability windows ranging from −4.0 to +4.0 V versus Ag. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2655–2659, 2002
ISSN:0021-8995
1097-4628
DOI:10.1002/app.10231