Electrocrystallization of metals on a rotating drum-cathode

Chernyshev, A. A.; Даринцева, А. Б.; Останина, Т. Н.; Panashchenko, Irina A.; Orlova, Alena A.; Novikov, Alexey E.; Artamonov, A. S.

doi:10.1016/j.ijhydene.2021.02.178

Cited by 2 publications

(1 citation statement)

References 36 publications

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“…Recently, base metals such as Ni, Co, W, or Mo [2,[5][6][7][8][9][10][11][12]; their alloys [2,[5][6][7][8][9][10][11][12][13]; and base metal-containing materials such as sulfides, nitrides, phosphides, and carbides of transition metals have been recognized as effective HER catalysts [14][15][16][17][18][19]. This is due to their chemical stability; their low cost; and, most importantly, to the low overvoltage of hydrogen release [20].…”

Section: Introductionmentioning

confidence: 99%

A Porous Tungsten Substrate for Catalytic Reduction of Hydrogen by Dealloying of a Tungsten–Rhenium Alloy in an Aqueous Solution of Hydrochloric Acid

Chernyshev

Никитина

2022

Applied Sciences

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Selective dissolution of a tungsten (85 wt.%)–rhenium (15 wt.%) alloy with rhenium in hydrochloric acid at the temperature of 298 K and anodic polarization modes was carried out to develop a porous catalytic substrate and to recycle rare metals. The parameters of the effective selective anodic dissolution of the tungsten–rhenium alloy, including the differences in applied potentials and electrolyte composition, were found. It was established that samples of the tungsten–rhenium alloy possess the smallest average pore size after being exposed for 6000 s. The obtained porous tungsten samples were characterized by X-ray diffraction and scanning electron spectroscopy. A thermodynamic description of the processes occurring during the anodic selective dissolution of a binary alloy was proposed. In the course of the work, the selectivity coefficient was determined using an X-ray fluorescence wave-dispersion spectrometer XRF-1800. The existence of a bimodal structure on the tungsten surface after dealloying was proved.

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Section: Introductionmentioning

confidence: 99%

A Porous Tungsten Substrate for Catalytic Reduction of Hydrogen by Dealloying of a Tungsten–Rhenium Alloy in an Aqueous Solution of Hydrochloric Acid

Chernyshev

Никитина

2022

Applied Sciences

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Deposition Mechanism and Corrosion Resistance of Ni-Graphene Composite Coatings Prepared by Pulse Electrodeposition

Wang¹

2021

International Journal of Electrochemical Science

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By adding graphene oxide (GO) to a Watt-type plating solution, a Ni-graphene (G) composite coating was prepared on a N80 steel substrate. Raman and FT-IR spectroscopy were performed to characterize the successful preparation and reduction of graphene oxide. The variation in the morphology of the composite coatings with changes in the average current density, rotation angle of cathode, and concentration of graphene oxide was examined using SEM and EDS analyses. An electrochemical corrosion test was used to study the effect of graphene oxide concentration on the corrosion resistance of composite coatings. A mechanism describing the action of the average current density and rotation angle of cathode during the codeposition process of Ni-G was proposed. It was found that the electrodeposition can be affected by the current density and rotation angle of cathode, confirming that the mechanism of Ni-G composite electrodeposition is controlled by both an electrochemical mechanism and a mechanical stirring mechanism. In addition, we proposed the mechanism of Ni-G composite electrodeposition.

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Electrocrystallization of metals on a rotating drum-cathode

Cited by 2 publications

References 36 publications

A Porous Tungsten Substrate for Catalytic Reduction of Hydrogen by Dealloying of a Tungsten–Rhenium Alloy in an Aqueous Solution of Hydrochloric Acid

A Porous Tungsten Substrate for Catalytic Reduction of Hydrogen by Dealloying of a Tungsten–Rhenium Alloy in an Aqueous Solution of Hydrochloric Acid

Deposition Mechanism and Corrosion Resistance of Ni-Graphene Composite Coatings Prepared by Pulse Electrodeposition

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