The surface tension results obtained from the QM/MD simulations are now compared with the electrowetting response recorded experimentally on the basal plane of HOPG. Figure presents the electrowetting response of HOPG recorded over a wide potential range in aqueous LiCl solutions of varied concentration, following the experimental procedure described in Methods. The first noteworthy outcome is the observed asymmetry relative to the potential zero charge ( ) in the dependence of contact angle on the applied potential bias. is reported to be ca. +0.1 V vs. Ag/AgCl(3.5 M KCl) for concentrations up to 1 M LiCl . Notably, at potentials more positive than 7b), an increase in electrolyte concentration results in an increase of the insulating droplet's contact angle. As described in Methods and illustrated in Figure , this phenomenon is driven by the decrease in the interfacial surface tension, , between the electrode and the electrolyte. The higher the extent of the decrease in , the more pronounced its effect on the contact angle of the insulating (no electrolyte) droplet, i.e., larger contact angles values are expected. In particular, at +1. , thus they cannot be compared with the simulation results where reactions between electrode and electrolytes cannot be modelled without fully Ab-initio molecular dynamics.