https://doi.org/10.1351/goldbook.C01230
The concentration ) is basically the difference in equilibrium potentials across the , relative to the potential of a similar flowing, one needs to subtract the ohmic potential drop prevailing between the two electrodes.
overpotential
of an electrode reaction
at a given electrode current density
(diffusion layer
. More precisely, it is the potential of a reference electrode
(of the same electrode reaction
as the working electrode
) with the interfacial concentrations which establish themselves at reference electrode
with the concentrations of the bulk solution. From such a measured potential difference, with