The Influence of Current Density of Electrodeposition on the Electrochemical Properties of Ni-Mo Alloy Coatings

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Abstract:

The Ni-Mo alloy coatings with a high content of Mo up to 44.5 at.%, were prepared by galvanostatic electrodeposition in the range of deposition current density, jdep, from-30 to-240 mA cm-2 from the nickel plating bath containing potassium pyrophosphate, nickel chloride, sodium molybdate, and sodium bicarbonate. Investigations of hydrogen evolution reaction (HER) were carried out in 5 M KOH solution at room temperature using steady-state polarization and electrochemical impedancy spectroscopy (EIS) measurements. It was found that for the Ni-Mo alloy coatings, the increase in their catalytic properties towards the HER with the increase in the value of jdep of the coatings, was due to the intrinsic activity.

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Solid State Phenomena (Volume 228)

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269-272

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March 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] N.V. Krstajić, V.D. Jović, Lj. Gajić-Krstajić, B.M. Jović, A.L. Antozzi G.N. Martelli: Int. J. Hydrogen Energ. Vol. 33 (2008), p.3676.

DOI: 10.1016/j.ijhydene.2015.06.127

Google Scholar

[2] Q. Han, S. Cui, N. Pu, J. Chen, K. Liu, X. Wei: Int. J. Hydrogen Energ. Vol. 35 (2010) p.5194.

Google Scholar

[3] O. Aaboubi: Int. J. Hydrogen Energ. Vol. 36 (2011) p.4702.

Google Scholar

[4] N. Eliaz, E. Gileadi, Induced Codeposition of Alloys of Tungsten, Molybdenum and Rhenium with Transition Metals, in: Modern Aspects of Electrochemistry, Vol. 41, C.G. Vayenas, R.E. White (Eds. ), Springer, (2006).

DOI: 10.1007/978-0-387-49489-0_4

Google Scholar

[5] L. Valek, M. Metikoš-Huković, Z. Grubač: J. New Mat. Electrochem. Systems Vol. 9 (2006), p.145.

Google Scholar

[6] B.R. Hinderliter, S.G. Croll, D.E. Tallman, Q. Su, G.P. Bierwagen: Electrochim. Acta Vol. 51 (2006), p.4505.

Google Scholar