The adsorption energies of the inner-sphere surface complexes were decomposed for a quantitative and readily physical interpretation of interaction mechanisms. According to the ALMO-EDA method, we focused the attention on the stabilizing terms of Eq. (2) (EELEC, EDISP, EPOL, ECT). Their relative single contributions (in percentage) are displayed in Fig. for a standardized comparison. Energies are included in Table .