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

Abstract 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 fie...

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Autores principales:	Yan-Hom Li, Yen-Ju Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/83b90a4ad1c34f4dbcc4ebeb0ad07757
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spelling	oai:doaj.org-article:83b90a4ad1c34f4dbcc4ebeb0ad077572021-12-02T16:56:10ZThe effect of magnetic field on the dynamics of gas bubbles in water electrolysis10.1038/s41598-021-87947-92045-2322https://doaj.org/article/83b90a4ad1c34f4dbcc4ebeb0ad077572021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87947-9https://doaj.org/toc/2045-2322Abstract 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.Yan-Hom LiYen-Ju ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yan-Hom Li Yen-Ju Chen The effect of magnetic field on the dynamics of gas bubbles in water electrolysis
description	Abstract 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.
format	article
author	Yan-Hom Li Yen-Ju Chen
author_facet	Yan-Hom Li Yen-Ju Chen
author_sort	Yan-Hom Li
title	The effect of magnetic field on the dynamics of gas bubbles in water electrolysis
title_short	The effect of magnetic field on the dynamics of gas bubbles in water electrolysis
title_full	The effect of magnetic field on the dynamics of gas bubbles in water electrolysis
title_fullStr	The effect of magnetic field on the dynamics of gas bubbles in water electrolysis
title_full_unstemmed	The effect of magnetic field on the dynamics of gas bubbles in water electrolysis
title_sort	effect of magnetic field on the dynamics of gas bubbles in water electrolysis
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/83b90a4ad1c34f4dbcc4ebeb0ad07757
work_keys_str_mv	AT yanhomli theeffectofmagneticfieldonthedynamicsofgasbubblesinwaterelectrolysis AT yenjuchen theeffectofmagneticfieldonthedynamicsofgasbubblesinwaterelectrolysis AT yanhomli effectofmagneticfieldonthedynamicsofgasbubblesinwaterelectrolysis AT yenjuchen effectofmagneticfieldonthedynamicsofgasbubblesinwaterelectrolysis
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The effect of magnetic field on the dynamics of gas bubbles in water electrolysis

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