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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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
Issue number2
Publication statusPublished - 2007 Apr 15

Bibliographical note

Funding Information:
This work is supported by the Ministry of Education and Human Resources Development (MOE), the Ministry of Commerce, Industry and Energy (MOCIE) and the Ministry of Labor (MOLAB) through the fostering project of the Lab of Excellency. Dr. Mohan Rao thanks for the support by The Korea Research Foundation and The Korean Federation of Science and Technology Societies Grant funded by Korea government (MOEHRD, Basic Research Promotion Fund).

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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