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The pH effects on the capacitive behavior of nanostructured molybdenum oxide

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Abstract

Nanostructured molybdenum oxide having a particle size in the range of 30–80 nm was prepared by potentiodynamic electrodeposition method, and the effects of H2SO4 concentration on its capacitive behavior were studied by cyclic voltammetry, galvanostatic discharge, and electrochemical impedance spectroscopy. Poor to fair capacitive behaviors were witnessed depending on the electrolyte concentration and conditions of charge/discharge. Increasing acid concentration to 0.02 M had favorable effect, while beyond that, the effect was detrimental. Capacitance around 600 F g−1 was recorded in the potential range of 0 to −0.55 V vs. Ag/AgCl.

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Authors and Affiliations

  1. Department of Chemistry, University of Birjand, P. O. Box 97175-615, Birjand, Iran

    Hossein Farsi, Heidar Raissi & Shokufeh Moghiminia

  2. Department of Chemistry, Sharif University of Technology, P. O. Box 11365-9516, Tehran, Iran

    Fereydoon Gobal

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  1. Hossein Farsi
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  2. Fereydoon Gobal
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  3. Heidar Raissi
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  4. Shokufeh Moghiminia
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Correspondence to Hossein Farsi.

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Farsi, H., Gobal, F., Raissi, H. et al. The pH effects on the capacitive behavior of nanostructured molybdenum oxide. J Solid State Electrochem 14, 681–686 (2010). https://doi.org/10.1007/s10008-009-0828-z

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  • DOI: https://doi.org/10.1007/s10008-009-0828-z

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