Convective Current in a Four-Electrode Electrochemical Cell at Various Boundary Conditions at Anodes

The frequency dependence of the transfer function of an electrochemical cell is studied experimentally and theoretically in the frequency region 0.005 to 1 Hz under conditions of controlled convective diffusion, at various boundary conditions on the anodes. It is shown that the results are independent of the conditions on the anodes at frequencies exceeding a diffusion frequency. On the other hand, the effect of the boundary conditions al low frequencies is substantial. In particular, it is shown that it is feasible to design a cell with a conversion efficiency indefinitely increasing in the direction of lower frequencies.__________Translated from Elektrokhimiya, Vol. 41, No. 8, 2005, pp. 987–992.Original Russian Text Copyright © 2005 by Agafonov, Nesterov.