Classical model of the compact double layer at interfaces

1 Classical model of the compact double layer at interfaces 

A simple parallel plate condenser model (Fig. 5-12) gives the electric capacity Ch of the compact double layer as shown in Eqn. 5-8  

The potential, i44 H, of the compact layer is the sum of the potentials gum generated by the interfacial charge and gatp generated by the interfacial dipoles gdip is composed of gM. up due to a dipole on the metal side and gs, due to a dipole on the solution side as shown in Eqn. 5-9  

The potentials of the interfacial dipoles gu. dip and ga.Hf differ, respectively, from the potentials of the free surface dipoles XM.dip and xs.dip of the metal and the solution as shown in Eqn. 5-10 and in Fig. 5-13  

Partially differentiating with respect to interfadal charge, o, we obtain the inverse capadty, 1 / Ch, of the compact layer shown in Eqn. 5-11  

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