| abstract |
According to one embodiment of the present invention, a lithium salt; Electrolyte solvent; And tris (pentafluorophenyl) silane represented by the general formula (1), and a lithium secondary battery comprising the non-aqueous electrolyte. The non-aqueous electrolytic solution according to an embodiment of the present invention has a side reaction caused by oxidation and reduction of an electrolyte generated during charging and discharging, specifically, a side reaction by electrolyte reduction occurring at less than about 1 V relative to Li / Li + It is possible to alleviate the side reaction due to the oxidation of the electrolyte at the same time. In addition, due to the relaxation of the side reaction, the Coulomb efficiency of the positive electrode and the negative electrode can be improved at the same time, and the efficiency and lifetime of the electrode can be improved at the same time, thereby further improving the performance of the lithium secondary battery. |