Novel high salt content polymer electrolytes based on high Tg polymers

Forsyth, Maria, Jiazeng, Sun and MacFarlane, D. R. 2000, Novel high salt content polymer electrolytes based on high Tg polymers, Electrochimica acta, vol. 45, no. 8-9, pp. 1249-1254, doi: 10.1016/S0013-4686(99)00328-X.

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Title Novel high salt content polymer electrolytes based on high Tg polymers
Formatted title Novel high salt content polymer electrolytes based on high Tg polymers
Author(s) Forsyth, MariaORCID iD for Forsyth, Maria
Jiazeng, Sun
MacFarlane, D. R.
Journal name Electrochimica acta
Volume number 45
Issue number 8-9
Start page 1249
End page 1254
Publisher Elsevier Science Pub. Co.
Place of publication New York, N.Y.
Publication date 2000-01-03
ISSN 0013-4686
Keyword(s) conductivity
polymer electrolytes
lithium triflate
molten salts
fast ion conductor
Summary Conductivities greater than or equal to 10−8 S cm−1 at Tg are reported in polymer electrolytes based on lithium triflate salt and a series of polymers whose Tg is greater than 90°C. The highest conductivities were observed for poly(acrylonitrile) based systems with salt concentrations greater than 60 wt.%. The conductivity in all cases investigated increases with increasing salt concentration. 1H-NMR T2 relaxation measurements suggest that Tg decreases with increasing salt content and confirms that these materials are glassy at room temperature and hence that the conductivity is significantly decoupled from the structural relaxations. It appears that the nature of the polymer is important in determining the level of ionic conductivity, possibly due to differences in polymer coordinating ability or differences in Tg. Polymer-in-salt mixtures based on a tetra-alkyl ammonium imide molten salt and several high Tg polymers are also reported. The conductivities of these mixtures appear to be independent of the polymer type.
Language eng
DOI 10.1016/S0013-4686(99)00328-X
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2000, Elsevier Science Ltd.
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