  Density functional theory is used to describe electrolyte solutions in
contact with electrodes of planar or spherical shape. For the electrolyte
solutions we consider the so-called civilized model, in which all species
present are treated on equal footing. This allows us to discuss the features of
the electric double layer in terms of the differential capacitance. The model
provides insight into the microscopic structure of the electric double layer,
which goes beyond the mesoscopic approach studied in the accompanying paper.
This enables us to judge the relevance of microscopic details, such as the
radii of the particles forming the electrolyte solutions or the dipolar
character of the solvent particles, and to compare the predictions of various
models. Similar to the preceding paper, a general behavior is observed for
small radii of the electrode in that in this limit the results become
independent of the surface charge density and of the particle radii. However,
for large electrode radii non-trivial behaviors are observed. Especially the
particle radii and the surface charge density strongly influence the
capacitance. From the comparison with the Poisson-Boltzmann approach it becomes
apparent that the shape of the electrode determines whether the microscopic
details of the full civilized model have to be taken into account or whether
already simpler models yield acceptable predictions.
