Dynamics and relaxation of charge carriers in poly(methylmethacrylate)-based polymer electrolytes embedded with ionic liquid

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
P Pal, A Ghosh

Abstract

In the present paper, we have studied dynamics and relaxation of the charge carriers in polymethylmethacrylate-lithium bis(trifluoromethane sulfonyl)imide polymer electrolytes embedded with 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid. We have analyzed the frequency dependent conductivity spectra using the random free-energy barrier model coupled with the contribution of electrode polarization in the low frequency region. The temperature dependence of ionic conductivity, and relaxation time obtained from the analysis of the spectra exhibits Vogel-Tammann-Fulcher type behavior. The Barton-Nakajima-Namikawa relation is consistent with the results obtained from the random free-energy barrier model. The scaling of ac conductivity spectra has been performed to understand the effect of temperature as well as the composition on the relaxation mechanism. The analysis of the ac conductivity also clearly indicates the existence of a nearly constant loss phenomenon at low temperatures or at high frequencies.

References

Nov 1, 1993·Physical Review. B, Condensed Matter·J C Dyre
Aug 3, 2001·Nature·Z GadjourovaP G Bruce
Nov 20, 2001·Nature·J M Tarascon, M Armand
Dec 13, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·B NatesanR S Katiyar
Apr 16, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A A KhamzinR R Nigmatullin

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Citations

Oct 20, 2017·Physical Chemistry Chemical Physics : PCCP·Ivan PopovYuri Feldman
Aug 8, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ivan LunevMalcolm Kelland

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