This underscores the importance of enhanced cation-anion coordination within WiS electrolytes for SEI formation, a concept also addressed in Refs. . Still, it is important to note that our analysis neglects additional mutual interactions in larger clusters, which could potentially influence the structure of the adsorption complexes and their adsorption energies. alongside key structural properties: the vertical distance between the sodium cation and the average position of atoms in the topmost surface layer, 𝑟 !"#$ ! or 𝑟 !"#!" ! , the vertical distance between the nearest oxygen atom of the triflate anion(s) to the surface and the average position of atoms in the topmost surface layer, 𝑟 %#$ ! or 𝑟 %#!" ! , the angle between the S-C bond in the triflate anion and the surface plane, 𝛼 %&' , and the maximum atomic displacements in surface layers relative to the bare surface (𝛿 ) for the topmost layer, 𝛿 * for the second layer, and 𝛿 + for the third layer).