GOUY-CHAPMAN MODEL OF THE DOUBLE LAYER

"A model of the electrical double layer. According to this model, the excess ions are non-uniformly distributed in the vicinity of the electrode, their concentration is the largest at the surface of the electrode, decreasing non-linearly till they reach bulk concentration. The ""thickness"" of this so called ""diffuse layer"" is variable, but it is typically around the order of magnitude of a millionth of a centimeter. "