Electrochemical stability of lithium salicylato-borates as electrolyte additives in Li-ion batteries

► Reduction and oxidation stabilities of bis(salicylato)borates are reported. ► A combined experimental and theoretical approach has been used. ► Lithium bis(5-fluorosalicylato)borate is reported for the first time. ► Salicylato ligands show higher reduction and lower oxidation stability than oxalato ligands. ► Variations in stability can be explained by substituent-induced electronic effects.