Fig. 3
From: Effect of hydrophobic cations on the oxygen reduction reaction on single‒crystal platinum electrodes
X-ray crystal truncation rod measurement of interfacial structure on platinum(111). a Specular crystal truncation rod (CTR) profiles of Pt(111) in 0.1 M HClO4 with and without 10−6 M tetra-n-hexylammonium cation (THA+) saturated with Ar at 0.50 V and 0.90 V versus reversible hydrogen electrode (RHE). The dots are the data points and the solid lines are the structure factors calculated using the optimized model. b Schematic models of the interfacial structure
