Evolution of hydrogen bubbles at the surface of a porous horizontal cathode
F. J. Higuera
Abstract
A simple model of hydrogen evolution at a horizontal cathode at the bottom of an acidic aqueous solution is proposed. The model accounts for convection due to suction of liquid through the electrode, as well as diffusion and migration of the charged species. The rate of growth of hydrogen bubbles and their spacing on the electrode are computed as functions of the mean current density and the suction velocity.
Topics & Concepts
CathodeHydrogenPorosityConvectionSuctionDiffusionMechanicsMaterials scienceElectrodeAqueous solutionThermodynamicsChemistryPhysicsComposite materialOrganic chemistryPhysical chemistryElectrohydrodynamics and Fluid DynamicsElectrostatics and Colloid InteractionsMinerals Flotation and Separation Techniques