New experimental device for convective mass-transport analysis by electrokinetic-hydrodynamic effect

A new device makes it possible to superimpose a tangential electric field a long a plane working electrode. Therefore, an increase of limiting electrol ytic currents arises due to a convective mass-transport effect. The latter, called electrokinetic-hydrodynamic (EKHD) effect is analyzed under station ary and dynamic conditions, and a new transfer function is thus obtained. T he relationship between the electrolytic current and the tangential electri c field under EKHD conditions is determined. Finally, a comparison is made between the EKHD tangential electric field and the one which has been suppo sed to exist in the presence of a magnetic field. (C) 1998 The Electrochemi cal Society. S1099-0062(98)01-072-4. All rights reserved.