Journal of Materials Science

, Volume 45, Issue 20, pp 5598–5604 | Cite as

Nanoparticulate magnetite thin films as electrode materials for the fabrication of electrochemical capacitors

Article

Abstract

Magnetite nanoparticles in stable colloidal suspension were prepared by the co-precipitation method. Nanoparticulate magnetite thin films on supporting stainless steel plates were prepared by drop-coating followed by heat treatment under controlled conditions. The effects of calcination temperature and atmosphere on the microstructure and electrochemical properties of nanoparticulate magnetite thin films were investigated. Nanoparticulate magnetite thin films prepared under optimized conditions exhibited a specific capacitance value of 82 F/g in mild aqueous 1.0 M Na2SO4 solution. Due to their high charge capacity, good cycling reversibility, and stability in a mild aqueous electrolyte, nanoparticulate magnetite thin films appear to be promising electrode materials for the fabrication of electrochemical capacitors.

Notes

Acknowledgement

This work was funded by Malaysian Ministry of Science Technology and Innovation (MOSTI) through the IRPA Grant No. 03-02-09-1019 EA001.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Faculty of Resource Science and Technology, Department of ChemistryUniversiti Malaysia SarawakKota SamarahanMalaysia

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