Determination of the half-wave potential of the species limiting the potential window. Measurement of gibbs transfer energies at the water/1,2-dichloroethane interface

Abstract

The numerical integration of the differential equation for cyclic voltammetry has been performed for the case where the reverse potential is set prior to the forward peak potential. A working curve stemming from these integrations allows the determination of the half-wave potential of species limiting the potential window. This technique has been applied to the measurement of formal Gibbs energies of transfer of ions across the water/1,2-dichloroethane interface. The validity of the TATB (tetraphenylarsonium tetraphenylborate) assumption is also discussed.