| abstract |
The present invention relates to a lithium secondary battery having improved high temperature characteristics, and specifically, a positive electrode including a positive electrode mixture layer formed on a positive electrode current collector; A negative electrode including a negative electrode mixture layer formed on the negative electrode current collector; A separator interposed between the anode and the cathode; And a non-aqueous electrolyte comprising a compound represented by Formula 1 as a lithium salt, an organic solvent, and a first additive, wherein the loading capacity of the cathode mixture layer is 3.7 mAh / cm 2 to 10 mAh / cm 2, and the concentration of the lithium salt is 1.5M to 3M, wherein the organic solvent is a mixed solvent including a cyclic carbonate organic solvent and a linear carbonate organic solvent, and the compound represented by Chemical Formula 1 is 0.1 wt% to 5 wt% based on the total weight of the nonaqueous electrolyte It relates to a lithium secondary battery included as. |