The Electrochemical Performance of Simple, Flexible and Highly Thermally Stable PVA-TiO2 Nanocomposite in an All-Solid-State Supercapacitor

The construction and constitution of an all-solid-state supercapacitor (SC) energy storage device is heavily reliant on key elements and factors, namely, the electrochemical, thermal and mechanical stability of distinctive materials, the method of electrode and electrolyte preparation, formation of...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on nanotechnology 2021, Vol.20, p.215-223
Main Authors: Beenarani, B B, Sugumaran, C Pugazhendhi
Format: Article
Language:English
Subjects:
Biomembranes
Capacitance
Electrochemical analysis
Electrodes
Electrolytes
Electrolytic cells
Energy Storage
Flux density
Membranes
Multi wall carbon nanotubes
Multi-walled carbon nanotubes supercapacitor
Nanocomposites
Particle separators
Polymers
Separators
Solid state
Supercapacitors
Thermal stability
Titanium dioxide
titanium oxide
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The construction and constitution of an all-solid-state supercapacitor (SC) energy storage device is heavily reliant on key elements and factors, namely, the electrochemical, thermal and mechanical stability of distinctive materials, the method of electrode and electrolyte preparation, formation of cells and packaging, to highlight a few. In our report, the preparation of an all solid state supercapacitor based primarily on the flexible PVA/TiO 2 nanocomposite polymer electrolyte membrane (NCPEM) that served as an electrolyte cum separator and the multi-walled carbon nanotube (MWCNT) used as electrodes, are detailed. Among the varied combinations of TiO 2 nanofillers with PVA polymers, the combination of 3wt% TiO 2 produced the best energy storage performance in two electrode configuration. PVA/3wt%TiO 2 blend membranes provided excellent thermal stability (up to 280 °C), mechanical stability (up to 50.21 MPa) and an incredible electrochemical performance. Due to the superior ionic transport facilitated by the electrode-electrolyte interface, the SC attained a specific capacitance of 137.72 F/g and an energy density of 19.12 Wh/Kg. It also acquired a power density of 277.7 mW/Kg at a current density of 1 A/g and exceptional capacitance retention of 94.08% over 6000 cycles. In order to substantiate this concept, tests to probe the comparison in electrochemical performances between PVA/3wt%TiO 2 membrane and the commercially available Nafion 112 membrane along with same MWCNT electrodes, were conducted.
ISSN:1536-125X
1941-0085
DOI:10.1109/TNANO.2021.3059524