| abstract |
The present invention provides a lithium secondary battery comprising a negative electrode, a positive electrode, a separator interposed between the positive electrode and the negative electrode, a lithium salt, a non-aqueous organic solvent, and an electrolyte, wherein the positive electrode comprises a ternary positive electrode active material, and the electrolyte is an additive. As succinonitrile 0.5 to 5% by weight; And 1 to 10% by weight of halogenated ethylene carbonate and 1 to 5% by weight of vinyl ethylene carbonate to provide a lithium secondary battery, using a relatively low cost three-way cathode active material The disadvantages of the manufactured secondary battery were improved.n n n Secondary Battery, Additive, Lifespan, Succinonitrile |