A new lithium salt with 3-fluoro-1,2-benzenediolato and lithium tetrafluoroborate for lithium battery electrolytes

► A new lithium salt, lithium difluoro(3-fluoro-1,2-benzene-diolato(2-)-o,o′)borate (FLDFBDB), has been synthesized. ► The salt, FLDFBDB, is thermally stable and soluble in many of the common organic solvents used in batteries. ► The conductivities and electrochemical oxidation potential of FLDFBDB solutions are higher than those of FLBBB solutions. ► A strong correlation between the adiabatic ionization potential and the electrochemical stability is established.