| abstract |
Provided are a lithium secondary battery excellent in battery characteristics such as long-term cycle characteristics, electric capacity, and storage characteristics of the battery, and a non-aqueous electrolyte that can be used for the lithium secondary battery. The present invention relates to a lithium secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte solution in which an electrolyte salt is dissolved in a non-aqueous solvent, wherein the positive electrode is a material containing a lithium composite oxide, and the negative electrode is a material containing graphite. A lithium secondary battery characterized by containing a dialkyl oxalate in a non-aqueous electrolyte and containing vinylene carbonate and / or 1,3-propane sultone, and a non-aqueous electrolyte used therein is there. |