In the present review, a brief historical survey of the mean-field theoretical description of
Electric Double Layer (EDL) is presented. Special attention is devoted to asymmetric finite size of
ions and orientational ordering of water dipoles. A model of Wicke and Eigen, who were first to explicitly
derive the ion distribution functions for finite size of ions, is discussed. Arguments are given in
favour of changing the recently adopted name of the mean-field EDL model for finite size of ions from
Bikerman model to Bikerman-Wicke-Eigen model. Theoretically predicted asymmetric and symmetric
camel-like shape of the voltage dependence of the differential capacitance is also discussed.
Keywords: Electric double layer, Wicke-Eigen model, Bikerman model, finite volumes, water dipoles, lattice model.
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