Abstract
Nanostructured molybdenum oxide was potentiodynamically deposited onto a stainless steel surface from an aqueous bath by cycling the potential between 0 and −0.75 V vs. Ag/AgCl. The deposit consisted of particulates in the range of 30 to 80 nm. Electrochemical studies under galvanostatic charge/discharge and also impedance spectroscopy revealed capacitive behavior in the potential range of −0.3 to −0.55 V vs. Ag/AgCl with the value of 477 F g−1 at 0.1 mA/cm2. An equivalent circuit comprising of three parallel branches consisting of double-layer capacitance, Warburg impedance, and a constant phase element signifying pseudo-capacitance each coupled with their corresponding resistances was fitted to the experimental findings, and the magnitudes of the elements were derived.
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This paper has been presented in: The Second international conference on nanoscience and nanotechnology, Tabriz, Iran, October 2009
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Farsi, H., Gobal, F., Raissi, H. et al. On the pseudocapacitive behavior of nanostructured molybdenum oxide. J Solid State Electrochem 14, 643–650 (2010). https://doi.org/10.1007/s10008-009-0830-5
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DOI: https://doi.org/10.1007/s10008-009-0830-5