Hydrothermal synthesis of SnO2-V2O5 mixed oxide and electrochemical screening of carbon nano-tubes (CNT), V2O5, V2O5-CNT, and SnO2-V2O5-CNT electrodes for supercapacitor applications

M. Jayalakshmi, M. Mohan Rao, N. Venugopal, Kwang Bum Kim

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85 Citations (Scopus)

Abstract

Nano-scaled SnO2-V2O5 mixed oxide is synthesized by a hydrothermal method in an autoclave. For comparative evaluation, V2O5 single oxide is prepared by a conventional process from ammonium vanadate. The capacitive behaviour of the following electrodes is studied by cyclic voltammetry in 0.1 M KCl solutions: carbon nano-tubes (CNT), V2O5, V2O5-CNT, and SnO2-V2O5-CNT. At a scan rate of 100 mV s-1, the SnO2-V2O5-CNT electrode provides the best performance, viz., 121.4 F g-1. The nano-scaled mixed oxide is characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Raman spectra.

Original languageEnglish
Pages (from-to)578-583
Number of pages6
JournalJournal of Power Sources
Volume166
Issue number2
DOIs
Publication statusPublished - 2007 Apr 15

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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