AC ionic conductivity and DC polarization method of lithium ion transport in PMMA-LiBF 4 gel polymer electrolytes

Osman, Z. and Mohd Ghazali, M.I. and Othman, L. and Md Isa, K.B. (2012) AC ionic conductivity and DC polarization method of lithium ion transport in PMMA-LiBF 4 gel polymer electrolytes. Results in Physics, 2. pp. 1-4. ISSN 2211-3797, DOI https://doi.org/10.1016/j.rinp.2011.12.001.

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Abstract

Polymethylmethacrylate (PMMA)-based gel polymer electrolytes comprising ethylene carbonate-propylene carbonate (EC/PC) mixed solvent plasticizer and various concentrations of lithium tetrafluoroborate (LiBF 4) salt are prepared using a solvent casting technique. Electrical conductivity and transference number measurements were carried out to investigate conductivity and charge transport in the gel polymer electrolytes. The conductivity results show that the ionic conductivity of the samples increases when the amount of salt is increased, however decreases after reaching the optimum value. This result is consistent with the transference number measurements. The conductivity-frequency dependence plots show two distinct regions; i.e. at lower frequencies the conductivity increases with increasing frequency and the frequency independent plateau region at higher frequencies. The temperature-dependence conductivity of the films seems to obey the Arrhenius rule. © 2012 Elsevier B.V.

Item Type:	Article
Funders:	UNSPECIFIED
Uncontrolled Keywords:	Gel polymer electrolytes; Polymethylmethacrylate; Ionic conductivity; Transference number
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Department of Physics
Depositing User:	miss munirah saadom
Date Deposited:	10 Oct 2013 01:38
Last Modified:	23 Sep 2019 09:27
URI:	http://eprints.um.edu.my/id/eprint/8455

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