A preliminary experimental and theoretical study of the differential capacity — potential curves, especially in low concentrations of electrolytes

Abstract

Using an automated system designed for making electrode kinetic measurements, differential capacity—potential measurements have been made on mercury and silver over a wide range of electrolyte concentrations and external potentials. We illustrate the necessity for a consistent treatment for the potential drop across the full interfacial region, and propose a new theoretical model which emphasises ion—ion interactions in an interfacial region of reduced longitudinal relative permittivity.