Microwave synthesized nanostructured TiO2-activated carbon composite electrodes for supercapacitor

M. Selvakumar, D. Krishna Bhat

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Electrochemical properties of a supercapacitor based on nanocomposite electrodes of activated carbon with TiO2 nano particles synthesized by a microwave method have been determined. The TiO2/activated carbon nanocomposite electrode with a composition of 1:3 showed a specific capacitance 92 Fg-1. The specific capacitance of the electrode decreased with increase in titanium dioxide content. The p/p symmetrical supercapacitor fabricated with TiO2/activated carbon composite electrodes showed a specific capacitance of 122 Fg-1. The electrochemical behavior of the neat TiO2 nanoparticles has also been studied for comparison purpose. The galvanostatic charge-discharge test of the fabricated supercapacitor showed that the device has good coulombic efficiency and cycle life. The specific capacitance of the supercapacitor was stable up to 5000 cycles at current densities of 2, 4, 6 and 7 mA cm-2.

Original languageEnglish
Pages (from-to)236-241
Number of pages6
JournalApplied Surface Science
Volume263
DOIs
Publication statusPublished - 15-12-2012

Fingerprint

Activated carbon
Capacitance
Microwaves
Electrodes
Composite materials
Nanocomposites
Electrochemical properties
Titanium dioxide
Life cycle
Current density
Nanoparticles
Supercapacitor
Chemical analysis
titanium dioxide

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Cite this

@article{cf328475caee48e3b144867f42c7537b,
title = "Microwave synthesized nanostructured TiO2-activated carbon composite electrodes for supercapacitor",
abstract = "Electrochemical properties of a supercapacitor based on nanocomposite electrodes of activated carbon with TiO2 nano particles synthesized by a microwave method have been determined. The TiO2/activated carbon nanocomposite electrode with a composition of 1:3 showed a specific capacitance 92 Fg-1. The specific capacitance of the electrode decreased with increase in titanium dioxide content. The p/p symmetrical supercapacitor fabricated with TiO2/activated carbon composite electrodes showed a specific capacitance of 122 Fg-1. The electrochemical behavior of the neat TiO2 nanoparticles has also been studied for comparison purpose. The galvanostatic charge-discharge test of the fabricated supercapacitor showed that the device has good coulombic efficiency and cycle life. The specific capacitance of the supercapacitor was stable up to 5000 cycles at current densities of 2, 4, 6 and 7 mA cm-2.",
author = "M. Selvakumar and Bhat, {D. Krishna}",
year = "2012",
month = "12",
day = "15",
doi = "10.1016/j.apsusc.2012.09.036",
language = "English",
volume = "263",
pages = "236--241",
journal = "Applied Surface Science",
issn = "0169-4332",
publisher = "Elsevier",

}

Microwave synthesized nanostructured TiO2-activated carbon composite electrodes for supercapacitor. / Selvakumar, M.; Bhat, D. Krishna.

In: Applied Surface Science, Vol. 263, 15.12.2012, p. 236-241.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Microwave synthesized nanostructured TiO2-activated carbon composite electrodes for supercapacitor

AU - Selvakumar, M.

AU - Bhat, D. Krishna

PY - 2012/12/15

Y1 - 2012/12/15

N2 - Electrochemical properties of a supercapacitor based on nanocomposite electrodes of activated carbon with TiO2 nano particles synthesized by a microwave method have been determined. The TiO2/activated carbon nanocomposite electrode with a composition of 1:3 showed a specific capacitance 92 Fg-1. The specific capacitance of the electrode decreased with increase in titanium dioxide content. The p/p symmetrical supercapacitor fabricated with TiO2/activated carbon composite electrodes showed a specific capacitance of 122 Fg-1. The electrochemical behavior of the neat TiO2 nanoparticles has also been studied for comparison purpose. The galvanostatic charge-discharge test of the fabricated supercapacitor showed that the device has good coulombic efficiency and cycle life. The specific capacitance of the supercapacitor was stable up to 5000 cycles at current densities of 2, 4, 6 and 7 mA cm-2.

AB - Electrochemical properties of a supercapacitor based on nanocomposite electrodes of activated carbon with TiO2 nano particles synthesized by a microwave method have been determined. The TiO2/activated carbon nanocomposite electrode with a composition of 1:3 showed a specific capacitance 92 Fg-1. The specific capacitance of the electrode decreased with increase in titanium dioxide content. The p/p symmetrical supercapacitor fabricated with TiO2/activated carbon composite electrodes showed a specific capacitance of 122 Fg-1. The electrochemical behavior of the neat TiO2 nanoparticles has also been studied for comparison purpose. The galvanostatic charge-discharge test of the fabricated supercapacitor showed that the device has good coulombic efficiency and cycle life. The specific capacitance of the supercapacitor was stable up to 5000 cycles at current densities of 2, 4, 6 and 7 mA cm-2.

UR - http://www.scopus.com/inward/record.url?scp=84869488047&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84869488047&partnerID=8YFLogxK

U2 - 10.1016/j.apsusc.2012.09.036

DO - 10.1016/j.apsusc.2012.09.036

M3 - Article

VL - 263

SP - 236

EP - 241

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

ER -