Multi-scan cyclic voltammetry of a solution containing mixed valence states

When both members of a redox pair are present in a voltammetric cell, the applied signal must start at the null potential if pure cyclic voltammetry is to be conducted. Here the current from a limitless number of repetitive cyclic scans is predicted mathematically for any initial reductant to oxidant ratio. The predictions were prompted by, and are compared with, published experiments. Some simplifying conditions are imposed: the reaction is reversible; the redox pair share the same diffusivity; the reversal potentials are symmetrically disposed with respect to the halfwave potential.