Journal
ELECTROCHIMICA ACTA
Volume 100, Issue -, Pages 261-264Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.05.082
Keywords
Magnetic field; Oxygen gas bubble; Water electrolysis; Surface coverage; MHD convection
Categories
Ask authors/readers for more resources
Alkaline water electrolysis was operated in a magnetic field and oxygen gas evolution was observed form the back side of a transparent glass electrode. The projection images clearly demonstrated the nucleation sites, bubble growth and motion on the electrode. Gas bubbles evolved in no magnetic field could stay at the nucleation site without any detachments until natural convection (pumping effect) was developed. On the other hand in a magnetic field, they were flushed away by the magnetohydrodynamics (MHD) convection as soon as they were nucleated at more than IT and their nucleation number decreased with increasing in the magnetic field intensity. The bubble motion in a magnetic field reflected the rising velocity accelerated by MHD convection. These results suggested that a magnetic field caused remarkable improvement of the surface coverage of the electrode. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available