| abstract |
The present invention relates to a lithium secondary battery, wherein the lithium secondary battery includes a negative electrode including a negative electrode active material, a positive electrode including a positive electrode active material, and an electrolyte solution, and the electrolyte solution contains 1 to 20% by volume of cyclic carbonate and 99 to linear carbonate. It comprises a non-aqueous organic solvent and lithium salt containing 80% by volume, the mixture density of the positive electrode is 3.7g / cc or more.n n n The lithium secondary battery of the present invention exhibits improved high temperature life characteristics, high temperature leaving characteristics, and high rate characteristics. |