| 摘要 |
Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒLi x MO 2 €ƒ€ƒ€ƒ€ƒ€ƒ(1)
wherein M is represented by Mn a M' 1-b , M' is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95‰¤x‰¤1.5, and 0.5‰¤a‰¤1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability. |
