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Ionic conductivity and diffusion coefficient of barium-chloride-based polymer electrolyte with poly(vinyl alcohol)–poly(4-styrenesulphonic acid) polymer complex
MAYANK PANDEY GIRISH M JOSHI NARENDRA NATH GHOSH
Volume 40 Issue 4 August 2017 pp 655-666
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Keywords
Polymer electrolytes ;impedance spectroscopy ;diffusion coefficient ;ionic conductivity. -
Abstract
A composite polymer electrolyte comprising poly(vinyl alcohol)–poly(4-styrenesulphonic acid) with bariumchloride dihydrate (BaCl$_2$·2H$_2$O) salt complex has been synthesized following the usual solution casting. The ionic conductivity of polymer electrolyte was analysed by impedance spectroscopy. The highest room temperature (at 30$^{\circ}$C) conductivity evaluated was 9.38 $\times$ 10$^{−6}$ S cm$^{−1}$ for 20 wt% loading of BaCl$_2$ in the polymer electrolyte. This has been referred to as the optimum conducting composition. The temperature-dependent ionic conductivity of the polymer electrolyte exhibits the Arrhenius relationship, which represents the hopping of ions in polymer composites. Cation and anion diffusion coefficients are evaluated using the Trukhan model. The transference number and enhanced conductivity imply that the charge transportation is due to ions. Therefore this polymer electrolyte can be further studied for the development of electrochemical device applications.
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Author Affiliations
MAYANK PANDEY1 GIRISH M JOSHI1 NARENDRA NATH GHOSH2
- Polymer Nanocomposite Laboratory, Center for Crystal Growth, Department of Physics, School of Advanced Sciences, VIT University, Vellore 632014, India
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, K K Birla Goa Campus, Goa 403726, India
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Dates
- Published
- 15 August 2017
- Manuscript received
- 23 February 2016
- Accepted
- 2 November 2016
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