Electrolyte for rechargeable lithium battery including aluminum-based compounds as new anion receptors and rechargeable lithium battery

摘要

The present invention relates to a lithium secondary battery electrolyte and a lithium secondary battery containing an aluminum-based compound, and more particularly, to suppress the decomposition of anions by adding an aluminum compound as an anion-immobilizing material to a conventional lithium secondary battery electrolyte. The present invention relates to a lithium secondary battery including an electrolyte for lithium secondary batteries and a copper electrolyte capable of improving electrochemical stability, and increasing a cation yield of lithium ions to improve battery performance.;An object of the present invention is to provide a lithium secondary battery electrolyte containing an aluminum-based compound as an anion immobilization material of a lithium secondary battery electrolyte, and a lithium secondary battery containing the electrolyte.;The electrolyte solution for lithium secondary batteries of this invention shows the electrolyte solution for lithium secondary batteries containing the aluminum type compound represented by following formula (1) in the electrolyte solution for lithium secondary batteries containing a lithium salt and a water-insoluble organic solvent.; ..... Equation (1);In formula (1), R is CH ₃ O, CF ₃ CH ₂ O, C ₃ F ₇ CH ₂ O, (CF ₃ ) ₂ CHO, (CF ₃ ) ₂ C (C ₆ H ₅ ) O, (CF ₃ ) ₃ CO, C ₆ H ₅ O, FC ₆ H ₄ O, F ₂ C ₆ H ₃ O, F ₄ C ₆ HO, C ₆ F ₅ O, CF ₃ C ₆ H ₄ O, (CF ₃ ) ₂ C ₆ H ₃ O or C ₆ F ₅ .