Abstract
The dependence of electrodiffusion effects during the metal ion electroreduction from complex anions on the hydrogen current density (i2) is studied by computer calculations. The effect depends on the stability and stoichiometry of the complex, the nature of supporting acid anion, and the complex-salt concentration. Depending on the balance between these parameters, both the effect of depression of the discharging-species delivery to the cathode and the effect of exaltation can be observed. The dependence of the delivery depression on i2in the electrolysis of sufficiently stable complex anions has an extremum. The maximum depression effect is reached at certain values of i2; the higher the stability constant of the complex ion, the higher is i2. The maximum degree of depression also increases in this order.
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