All electrolyte decomposition products were derived from dimethyl carbonate (DMC), ethylene carbonate (EC), or propylene carbonate (PC) as a base. We considered the surface terminations with the three lowest surface energies of pure sodium and the (100) and the (111) surfaces of sodium chloride. We considered both the NaCl(100) and the NaCl(111) surfaces since whereas the NaCl(100) surface is known to be the most stable NaCl surface , the NaCl(111) surface has been observed in several instances . We specifically consider the Na-rich NaCl(111) due to its resemblance to Na-metal. These surface terminations should be stabilized at high Na electrochemical potentials or rather low Cl potentials, as the sum of these two potentials is fixed by the chemical potential of NaCl salt. We calculated the adsorption energy using