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Preparation and performance analysis of barium titanate incorporated in corn starch‐based polymer electrolytes for electric double layer capacitor application
Author(s) -
Teoh K. H.,
Lim ChinShen,
Liew Chiam Wen,
Ramesh S.
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43275
Subject(s) - materials science , barium titanate , thermogravimetric analysis , ionic conductivity , electrolyte , chemical engineering , differential scanning calorimetry , polymer , lithium perchlorate , electric double layer capacitor , cyclic voltammetry , composite material , polymer chemistry , ceramic , electrochemistry , chemistry , electrode , physics , engineering , thermodynamics
Polymer electrolyte membranes composing of corn starch as host polymer, lithium perchlorate (LiClO 4 ) as salt, and barium titanate (BaTiO 3 ) as composite filler are prepared using solution casting technique. Ionic conductivity is enhanced on addition of BaTiO 3 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 % BaTiO 3 filler in corn starch‐LiClO 4 polymer electrolytes at 75°C. Glass transition temperature ( T g ) of polymer electrolytes decreases as the amount of BaTiO 3 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 BaTiO 3 ‐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.