Electrochemical Characterization of Nickel-Based Composite Coatings Containing Molybdenum or Tungsten Nanopowders

Abstract:

The Ni+Mo and Ni+W nanocomposite coatings were prepared by electrodeposition under the galvanostatic conditions (j_dep = -300 mA cm^-2) from the nickel bath containing nanopowders of molybdenum (<100 nm) or tungsten (<150 nm). Kinetics of hydrogen evolution reaction (HER) was studied in 5 M KOH solution at room temeprature. The reason of revealed higher electrochemical activity towards the HER in case of the Ni+Mo nanocomposite electrode as compared to that of the Ni+W nanocomposite electrode, has been discussed.

• Periodical: Solid State Phenomena (Volume 228)
• Pages: 283-287
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.228.283
• Online since: March 2015
• Authors: Magdalena Popczyk, B. Łosiewicz, A. Budniok
• Keywords: Hydrogen Evolution Reaction, Mo Nanopowder, Ni+Mo Composite Coating, Ni+W Composite Coating, W Nanopowder

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