Now chemisorption is brought into the play and examine its influence on the 𝐶 dl curve. Let us consider a synthetic double layer, of which the model parameters correspond to the Pt(111)-0.1 mM HClO4 interface. To simplify the matter, only chemisorption of OH is considered. 𝑓 OH (𝐸) in Eq.( ) is assumed to be a single normal distribution with with an expectation 𝜇 = 0.8 V RHE and a standard variation σ = 0.1 V. 𝐸 pzc,SHE 0 = 0.29 V SHE is used, the maximum coverage for chemisorbates 𝜃 max = 1 -𝜃 w = 0.5, and the net electron number of chemisorbates 𝜉 = 0.2. We use 𝛿𝜇 ̃= -1 here. Other model parameters are the same as those used in the example of Figure . These model parameters are chosen more or less arbitrarily for the mere purpose of quantitative calculation; they will be obtained from a model fitting of experimental data at a latter stage.