Inspired by recent experimental observations of anomalously large decay lengths in
concentrated electrolytes, we revisit the Restricted Primitive Model (RPM) for an aqueous
electrolyte. We investigate the asymptotic decay lengths of the one-body ionic density
profiles for the RPM in contact with a planar electrode using classical Density Functional
Theory (DFT) and compare these with the decay lengths of the corresponding two-body
correlation functions in bulk systems, obtained in previous Integral Equation Theory (IET) …