Title: A SIMPLE DESCRIPTION OF THE STRUCTURE OF IONIC SOLUTIONS AT ELECTRIFIED INTERFACES
Authors: J.Stafiej (Institute of Physical Chemistry of the Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland), A.Ekoka (Structure et Reactivite des Systemes Interfaciaux Universite P. et M. Curie, Bat. F, BP 52, 4. Place Jussieu, 75230 Paris Cedex 05, France), Z.Borkowska (Institute of Physical Chemistry of the Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland) J.P.Badiali (Structure et Reactivite des Systemes Interfaciaux Universite P. et M. Curie, Bat. F, BP 52, 4. Place Jussieu, 75230 Paris Cedex 05, France)

In this paper a field theoretical approach is used in the description of the properties of ionic solutions near a charged wall. The differences with the Gouy-Chapman theory are emphasized both near the point of zero charge and for high values of the charge. At the point of zero charge we are getting a maximum instead of a minimum and at high charge densities we observe a saturation in the capacitance values instead of a continuous increase. The results are very sensitive to the asymmetry of ions which is expected in real systems. Our approach seems to be a good starting point for investigating various phenomena at charged interfaces and in the bulk of ionic solutions.

Comments: Figs. 2, Refs. 15, Tabs. 0.