The explanation has two appealing points. First, it explains why the capacitance value obtained by Ojha et al. using cyclic voltammetry (~ 100 μF cm -2 at the pzc) is much higher than that obtained by Pajkossy and Kolb using EIS (~ 20 μF cm -2 at the pzc). Second, it removes the need to introduce attractive metalion interactions with an unknown origin to explain the anomalously large capacitance at the pzc. The explanation implies that there is no pure double-layer region for the Pt(111) electrode.