To verify this relationship between the capacitance asymmetry ∆C H and E ads at other types of aqueous interfaces with weakly adsorbed water, the graphene/NaCl electrolyte interface was selected and simulated with classical force fields and constantpotential MD, and the concentration of NaCl electrolyte is 1 M (see ESI †). The adsorption energy was calculated from a single water molecule with two-leg structure adsorbed on the surface of two-layer graphene electrode (see Fig. ). The strength of water adsorption energy E ads of graphene electrodes was changed by adjusting the energy parameter ε of the Lennard-Jones potential between water molecules and graphene. The E ads in the classical MD simulations with energy parameters of 0.3ε, 0.7ε, ε, 1.5ε, 2.0ε were calculated as 0.05, 0.08, 0.10, 0.14, 0.17 eV, respectively. In the classical MD simulations, the Helmholtz capacitance (C H ) is calculated from the definition of C H = dσ /d(∆φ ), and ∆φ is the electrostatic potential difference between the top graphene layer and bulk electrolyte as shown in Fig. †. The calculated C + H and C - H for electrified graphene/NaCl electrolyte interfaces with different adsorption capabilities are described in Fig. . † Based on the classical MD simulations, it is found that the ∆C H shows a similar monotonic increment as a function of E ads at electrified graphene/NaCl electrolyte interfaces (Fig. ). This result indicates that the positive correlation that we found at oxide sur-faces of is also seen for graphene-like systems.