Electrocatalytically active Co–W and Co–W–C alloys electrodeposited in a magnetic field

Żabiński, Piotr; Mech, Krzysztof; Kowalik, Remigiusz

doi:10.1016/j.electacta.2012.11.047

Cited by 39 publications

(23 citation statements)

References 13 publications

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“…[1] The best catalytic properties are found in metals from the platinum group [2][3], but due to their high prices it is impossible to commercialise production of hydrogen as a common energy carrier. A solution to the problem can be application of alloy or composite catalysers of catalytic properties close to those of the platinum metals though much less expensive [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Deposition of Ruthenium and Cobalt-Ruthenium Alloys From Acidic Chloride Ions Containing Baths

Kutyła¹,

Kołczyk²,

Kowalik³

et al. 2016

Archives of Metallurgy and Materials

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The article presents results of tests on potentiostatic electrodeposition of ruthenium and Co-Ru alloys.The tests applying the method of cyclic voltammetry with the use of gold disk electrode (RDE) allowed to define a potentials range in which it is possible to obtain ruthenium and its alloys with cobalt from acid chloride electrolytes. The influence of electrodeposition parameters and the electrolyte composition on the composition, morphology and structure of the obtained deposits was determined. Co-Ru alloys underwent XRD tests, an analysis with the XRF method and observations using scanning electron microscopy (SEM).

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Section: Introductionmentioning

confidence: 99%

Electrochemical Deposition of Ruthenium and Cobalt-Ruthenium Alloys From Acidic Chloride Ions Containing Baths

Kutyła¹,

Kołczyk²,

Kowalik³

et al. 2016

Archives of Metallurgy and Materials

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“…Addition of molybdenum or tungsten allows to lower both the value of overpotential and corrosive resistance in comparison to pure Ni or Co [13][14][15][16][17]. Moreover, in many cases, the presence of a magnetic field during synthesis can also decrease the overpotential [18][19][20]. It was also found that addition of carbon in alloys of cobalt with molybdenum significantly lowered the energy of electrons bonds Co 2p 3/2 and Mo 3d 5/2 .…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Electroactive Co–B and Co–B–C Alloys for Water Splitting Process in 8 M NaOH Solutions

et al. 2017

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The aim of this work was to determine parameters of obtaining Co-B and Co-B-C alloys characterized by low overpotential in hydrogen evolution reactions. There were tests performed to examine the influence of borax and arginine concentration changes as well as the value of cathodic current intensity on the composition, morphology, synthesis current efficiency, and effectiveness of hydrogen evolution. Carbon was added to Co-B alloys to improve its properties of water decomposition in 8 M NaOH solution at 90°C. The results of the experiments confirmed a decrease in overpotential values from 48 mV/dec for Co-8.5B alloy to 33 mV/dec for Co-8.2B-9.6C alloy obtained at the highest concentration (0.1 M) of arginine in the electrolyte. It was observed that alloys of good catalytic properties featured an amorphous structure. The coatings were analyzed with the use of a scanning electron microscope (SEM) and X-ray diffraction (XRD). The content of boron was assessed based on the glow discharge spectroscopy (GDS) method, whereas carbon was analyzed with the method of adsorption spectroscopy of infrared radiation.

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“…If the magnetic fields are applied during the electrodeposition process, it would have a corresponding effect on the steps mentioned above, and ultimately affect the morphology and properties of the coatings. These effects embodied in the following aspects [7], [12]:…”

Section: The Action Of External Magnetic Field On Electro-deposition mentioning

confidence: 99%

“…The Nernst diffusion layer was depleted, whereas a new Naviere Stokes hydrodynamic layer appeared, which determined the velocity of electro active molecules flow to the working electrode under CMF conditions. P. Żabiński et al [7]. conducted the research on electro-catalytically active Co-W and Co-W-C alloys electro-deposited in a magnetic field.…”

Section: Electrodepositing Alloy Coatings Under Action Of Magnetic Fieldmentioning

confidence: 99%

“…Presently, the research about actions of the magnetic field in electro-deposition process mainly focused on two aspects: The acting directions and the intensity of applied magnetic field [3], [7]. The types of electro-deposition coatings which prepared under the action of magnetic 1 field are as follow: Single metal coatings, alloy coatings and composite coatings [8], [9].…”

Section: Research Overview Of Applying External Magnetic Field Duringmentioning

confidence: 99%

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The Research and Development of the External Magnetic Field Acting on Electro-Deposition Process

Wang

2016

MATEC Web Conf.

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Abstract. The research and development status of the electro-deposition technology under the action of external magnetic field are introduced. The basic characteristics and applied manners of external magnetic field in electrodeposition process are summarized. The acting principle of external magnetic field, the effects of magnetic hydrodynamics (MHD) caused by the Lorentz force, and the acting of magnetic force on the metal ions and particles are described. The main actions of external magnetic field include MHD effect, magnetizing force, affecting the physical and chemical properties of the bath, affecting the disperse ability and coverage capacity of bath, affecting the mass transfer process of electro-deposition, affecting the chemical reaction process and current distribution of electrode surface. Some examples of electro-depositing single metal coatings, alloy coatings and composite coatings under action of magnetic field are explained. During the electro-depositing process, the external magnetic field has different degrees of impact on solution properties, mass transfer, charge transfer, content of composited nanoparticles, crystal growth and crystal orientation etc. The specific impact of magnetic field during the electro-depositing is also classified and summarized. The problems that existed in electro-deposition process while applying magnetic field and the next development trend were summarized.

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Electrocatalytically active Co–W and Co–W–C alloys electrodeposited in a magnetic field

Cited by 39 publications

References 13 publications

Electrochemical Deposition of Ruthenium and Cobalt-Ruthenium Alloys From Acidic Chloride Ions Containing Baths

Electrochemical Deposition of Ruthenium and Cobalt-Ruthenium Alloys From Acidic Chloride Ions Containing Baths

Electrodeposition of Electroactive Co–B and Co–B–C Alloys for Water Splitting Process in 8 M NaOH Solutions

The Research and Development of the External Magnetic Field Acting on Electro-Deposition Process

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