Lorentz-force-driven convection during copper magnetoelectrolysis in the presence of a supporting buoyancy force

Mühlenhoff, Sascha; Mutschke, Gerd; Koschichow, Denis; Yang, Xuegeng; Bund, Andreas; Fröhlich, Jochen; Odenbach, Stefan; Eckert, Kerstin

doi:10.1016/j.electacta.2012.02.110

Cited by 37 publications

(14 citation statements)

References 55 publications

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“…Numerous studies show that the F L that is produced by the charges moving under an applied magnetic field induces convection in the electrolyte 45 – 49 . Electrochemical reactions are improved by an increase in mass transport, which is enhanced by F L 45 – 52 . However, the direction in which F L acts determines the efficiency of the reaction.…”

Section: Resultsmentioning

confidence: 99%

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

Chen

2021

Sci Rep

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This study determines the effect of the configuration of the magnetic field on the movement of gas bubbles that evolve from platinum electrodes. Oxygen and hydrogen bubbles respectively evolve from the surface of the anode and cathode and behave differently in the presence of a magnetic field due to their paramagnetic and diamagnetic characteristics. A magnetic field perpendicular to the surface of the horizontal electrode causes the bubbles to revolve. Oxygen and hydrogen bubbles revolve in opposite directions to create a swirling flow and spread the bubbles between the electrodes, which increases conductivity and the effectiveness of electrolysis. For vertical electrodes under the influence of a parallel magnetic field, a horizontal Lorentz force effectively detaches the bubbles and increases the conductivity and the effectiveness of electrolysis. However, if the layout of the electrodes and magnetic field results in upward or downward Lorentz forces that counter the buoyancy force, a sluggish flow in the duct inhibits the movement of the bubbles and decreases the conductivity and the charging performance. The results in this study determine the optimal layout for an electrode and a magnetic field to increase the conductivity and the effectiveness of water electrolysis, which is applicable to various fields including energy conversion, biotechnology, and magnetohydrodynamic thruster used in seawater.

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Section: Resultsmentioning

confidence: 99%

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

Chen

2021

Sci Rep

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“…The sign of the magnetically-induced vortex can be arranged to counteract that created by buoyancy, resulting in a uniform electrodeposit. [50,51] Fine-grained structures with improved homogneity can be obtained by pulsing the current.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Magnetic fields in electrochemistry: The Lorentz force. A mini-review

Monzón

Coey

2014

Electrochemistry Communications

259

199

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

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“…The subject of magnetic field effects is very wide. In addition to uniform magnetic field effects, researchers also study non-uniform magnetic fields and possibilities of their influence on chemical processes [5][6][7]. Inhomogeneous magnetic fields may cause changes in fluid flow, concentration, and convection [5].…”

Section: Introductionmentioning

confidence: 99%

Influence of constant magnetic field on electrodeposition of metals, alloys, conductive polymers, and organic reactions

Kołodziejczyk

Miękoś

Zieliński

et al. 2018

J Solid State Electrochem

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The paper presents and summarizes some research on constant magnetic field effects in chemistry. Metals and alloys electrodeposited under constant magnetic field have greater thickness and smoother surface with finest grains. Metallic materials deposited under the influence of uniform magnetic field may have stronger corrosion resistance, than those obtained without the presence of magnetic field. Constant magnetic field also causes an increase of the electropolymerization rate and yield of some organic reactions. Our research also shows that the presence of constant magnetic field affects the electrodeposition process of alloys and their morphology to a great extent. The effects of magnetic field on metals, alloys, composites, polymers and other materials are due to the Lorentz force and the magnetohydrodynamic effect. It is possible that the further development of magnetoelectrodeposition will allow for using the constant magnetic field to improve the properties of metal coatings, alloys, polymers, and other materials in the industry.

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Lorentz-force-driven convection during copper magnetoelectrolysis in the presence of a supporting buoyancy force

Cited by 37 publications

References 55 publications

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

Magnetic fields in electrochemistry: The Lorentz force. A mini-review

Influence of constant magnetic field on electrodeposition of metals, alloys, conductive polymers, and organic reactions

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