Scheme 1: Model presentation for the SMSI effect, resulting in the spillover transfer of H-adatoms within the bronze nanostructure (Pt/H0.35WO3, (a)) and/or the primary oxide (M-OH) effusion, as a dipole along the hydrated counterpart (Pt/W(OH)6, (b)), further continuously transferring them upon the metallic part (Pt) of catalyst, otherwise both originating from the hypo-d-oxide continuously fed by moisture stream to such a composite (M/TiO2, WO3) electrocatalyst structure and maintaining them in the reversible interchangeable equilibrium (Pt/H0.35WO3 Pt/W(OH)6) (constructed by Dimitris Tsiplakides).