The Double Layer as a NanodielectricGenerally, every electrochemical cell works as an elec-trical capacitor, if two metallic, oxidic, or carboneouselectrodes dip into an aqueous or organic solution. Theelectrolytic double layer at the phase boundary betweenevery electrode and the electrolyte measures only a fewnanometers of thickness. Simplified, the electrolyticdouble layer behaves like a plate capacitor. The capacitoris formed, because the uncharged electrode surface giveselectrons into the inner electrode material and, chargednegatively through that, attracts counterions from theelectrolyte. The counterelectrode charges itself positivelyagainst the surrounding solution. Electrode and electro-lyte reach different electric potentials. The molecularlayer of absorbed ions at the electrode surface...