MHD-control on limiting faradaic currents

摘要

Magnetically induced phenomena in electrochemistry are illustrated by the well-known convective effect that can be readily observed on diffusion limiting currents due to a magnetohycdrodynamic control. Yet, a point still needs to be analysed to shed light on that controversial problem: the magnitude of the forces then involved cannot account for the measured increase of the current when the superimposed homogeneous magnetic field B is parallel to the plane surface of the working electrode. If the natural convection is also taken into account, a classical hydrodynamic treatment allows us to obtain laws that can be perfectly demonstrated and are in good agreement with every experimental results.