Physical and Chemical Characterization of Ni+MoO2 Composite Electrocoatings

B. Łosiewicz; Grzegorz Dercz; Magdalena Popczyk

doi:10.4028/www.scientific.net/SSP.228.58

Paper Titles

Multi-Phased Electrode Materials for the Electroevolution of Oxygen
p.23

Amorphous Ni-P Electrode Materials
p.32

New Ni-Me-P Electrode Materials
p.39

Characterization of Composite Coatings Obtained by Electrodeposition
p.49

Physical and Chemical Characterization of Ni+MoO₂ Composite Electrocoatings
p.58

Electrodeposition Mechanism of Composite Coatings
p.65

Characteristics of the Galvanic Baths for Electrodeposition of Nickel Coatings Using the Hull Cell
p.79

The Role of Ni(II) Ion Adsorption onto TiO₂ in the Electrodeposition of Composite Ni-P+TiO₂ Coatings
p.89

Relaxation Characteristics of the Electrodeposition Process of Composite Ni-P+TiO₂+PTFE and Ni-P+Ni(OH)₂+PTFE Coatings
p.101

HomeSolid State PhenomenaSolid State Phenomena Vol. 228Physical and Chemical Characterization of Ni+MoO2...

Physical and Chemical Characterization of Ni+MoO₂ Composite Electrocoatings

Abstract:

This work deals with the development of new electrochemical ways to improve the cathode activity towards hydrogen evolution reaction. An in situ composite electrodeposition technique has been proposed to obtain the porous Ni+MoO₂ coatings by simultaneous co-deposition of Ni and MoO₂ onto a Cu substrate from a nickel plating bath containing 10 g dm^-3 of MoO₂ powder suspended by magnetic stirring. Electrodeposition was conducted at 30°C at the deposition current density of j_d = 50-250 mA cm^-2. SEM, EDS, and XRD measurements, were applied for physical and chemical characterization of the obtained coatings. It was found that by controlling the deposition conditions it was possible to obtain porous Ni+MoO₂ coatings containing from 10 to 15 at.% of MoO₂. The XRD results confirmed their diphase structure with a polycrystalline Ni matrix into which a crystalline component in the form of MoO₂ particles was built-in.

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Periodical:

Solid State Phenomena (Volume 228)

Pages:

58-62

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.228.58

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Online since:

March 2015

Authors:

B. Łosiewicz, Grzegorz Dercz, Magdalena Popczyk

Keywords:

Composite Electrocoatings, Electrodeposition, Molybdenum(IV) Oxide, Ni+MoO₂

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