Experimental investigation of two-phase electrolysis processes: comparison with or without gravity

During two-phase electrolysis, bubble production occurs at one or two electrodes. This yields a large change for the electrolyser electrical and hydrodynamic properties. Under normal Earth gravity, the bubble production at the electrodes induces a macro-convection in the electrolyser. This leads to...

Full description

Saved in:
Bibliographic Details
Published inJournal of applied electrochemistry Vol. 43; no. 12; pp. 1145 - 1161
Main Authors Derhoumi, Zine, Mandin, Philippe, Roustan, Hervé, Wüthrich, Rolf
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.12.2013
Springer Verlag
Subjects
Bubbles
Buoyancy
Chemistry
Chemistry and Materials Science
Current density
Electric potential
Electrochemistry
Electrodes
Electrolysis
Engineering Sciences
Evolution
Gravitation
Industrial Chemistry/Chemical Engineering
Physical Chemistry
Research Article
Bubbles
Processes
Two-phase electrolysis
Electrochemical
Gravity
Online AccessGet full text

Cover

More Information
Summary:During two-phase electrolysis, bubble production occurs at one or two electrodes. This yields a large change for the electrolyser electrical and hydrodynamic properties. Under normal Earth gravity, the bubble production at the electrodes induces a macro-convection in the electrolyser. This leads to a modified local current density distribution at the electrodes. When gravity is avoided, bubbles are no longer subject to buoyancy forces and to the induced natural flow friction forces. Electrolysis was performed using a potentiostat, and gas bubble evolution was observed with cameras. Quantitative evolution laws for the electrochemical cell voltage, bubble diameter and population during two-phase electrolysis are established in function of the current density and gravity variation.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-891X
1572-8838
DOI:10.1007/s10800-013-0598-2