The dense part of the double layer at the metal-electrolyte interface is usually identified with the so-called molecular capacitor. The latter is assumed to be formed by the metal surface z = 0 and the plane of maximum approach of ions z = h with solvent molecules between them (these planes act as the capacitor plates). The model becomes a little more complicated in the case of specific adsorption, since two planes of maximum approach, rather than one, exist in this case (see § 7). We shall not, however, touch upon such details because in this section we shall consider, for the sake of simplicity, only surface-inactive electrolytes.
KeywordsDouble Layer Solvent Molecule Dense Part Specific Adsorption Capacitor Plate
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