Nanocomposite polymer electrolytes comprising starch-lithium acetate and titania for all-solid-state supercapacitor

A nanocomposite solid polymer electrolyte (SPE) system has been prepared for application in a supercapacitor. Corn starch is used to host the ionic conduction with lithium acetate (LiOAc) salt as an ion provider. Different concentrations of nanosized titanium dioxide (TiO 2 ) filler have been added...

Full description

Saved in:
Bibliographic Details
Published in:Ionics 2021-02, Vol.27 (2), p.853-865
Main Authors: Ong, A. C. W., Shamsuri, N. A., Zaine, S. N. A., Panuh, Dedikarni, Shukur, M. F.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Complex formation
Condensed Matter Physics
Electrochemical potential
Electrochemistry
Electrolytes
Emission analysis
Energy Storage
Field emission microscopy
Fourier transforms
Lithium
Morphology
Nanocomposites
Optical and Electronic Materials
Original Paper
Renewable and Green Energy
Room temperature
Stability analysis
Supercapacitors
Thermal conductivity
Titanium dioxide
Voltammetry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A nanocomposite solid polymer electrolyte (SPE) system has been prepared for application in a supercapacitor. Corn starch is used to host the ionic conduction with lithium acetate (LiOAc) salt as an ion provider. Different concentrations of nanosized titanium dioxide (TiO 2 ) filler have been added to analyse the influence of nanofiller addition on the conductivity and other properties of the electrolytes. Structural characterisation and complex formation have been examined by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, respectively. It is shown that the room temperature conductivity changes with the change in TiO 2 concentration. Adding 4 wt.% TiO 2 to the starch-LiOAc complex leads to an optimum conductivity of (8.37 ± 1.04) × 10 −4  S cm −1 . The variation in conductivity is accompanied by the change in surface morphology as observed from field emission scanning electron microscopy (FESEM) analysis. Linear sweep voltammetry (LSV) indicates that the electrochemical potential stability window of the electrolyte with 4 wt.% TiO 2 lies in the range between − 2.0 and + 1.9 V. A supercapacitor has been assembled using the electrolyte, and its performance has been characterised using impedance technique and cyclic voltammetry.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-020-03856-3