Microwave synthesized nanostructured TiO2-activated carbon composite electrodes for supercapacitor

Selvakumar, M and Bhat, Krishna D (2012) Microwave synthesized nanostructured TiO2-activated carbon composite electrodes for supercapacitor. Applied Surface Science, 263. pp. 236-241. ISSN 0169-4332

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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 7mAcm−2.

Item Type: Article
Uncontrolled Keywords: Titanium oxide; Microwave synthesis; Activated carbon Supercapacitor ;Galvanostatic charge–discharge
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 10 Jun 2013 09:30
Last Modified: 10 Jun 2013 09:30
URI: http://eprints.manipal.edu/id/eprint/136272

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