Preparation and performance analysis of barium titanate incorporated in corn starch-based polymer electrolytes for electric double layer capacitor application.

Autor: Teoh, K. H., Lim, Chin‐Shen, Liew, Chiam Wen, Ramesh, S.
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Zdroj: Journal of Applied Polymer Science; Apr2016, Vol. 133 Issue 14, pn/a-N.PAG, 9p
Abstrakt: ABSTRACT Polymer electrolyte membranes composing of corn starch as host polymer, lithium perchlorate (LiClO4) as salt, and barium titanate (BaTiO3) as composite filler are prepared using solution casting technique. Ionic conductivity is enhanced on addition of BaTiO3 by reducing the crystallinity and increasing the amorphous phase content of the polymer electrolyte. The highest ionic conductivity of 1.28 × 10−2 S cm−1 is obtained for 10 wt % BaTiO3 filler in corn starch-LiClO4 polymer electrolytes at 75°C. Glass transition temperature ( Tg) of polymer electrolytes decreases as the amount of BaTiO3 filler is increased, as observed in differential scanning calorimetry analysis. Scanning electron microscopy and thermogravimetric analysis are employed to characterize surface morphological and thermal properties of BaTiO3-based composite polymer electrolytes. The electrochemical properties of the electric double-layer capacitor fabricating using the highest ionic conductivity polymer electrolytes is investigated using cyclic voltammetry and charge-discharge analysis. The discharge capacitance obtained is 16.22 F g−1. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43275. [ABSTRACT FROM AUTHOR]
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