Patent ID: 8808918
Filing Date: 2014-08-19
Classification: H01M,Y02E

Abstract:
1. A rechargeable lithium battery comprising: a positive electrode including a positive active material that includes a core and a coating layer formed on the core; a negative electrode including a negative active material; and a non-aqueous electrolyte that includes a non-aqueous organic solvent, a lithium salt, and an additive represented by Formula XI; wherein the core of the positive active material is made of a material selected from the group consisting of the materials represented by Formulas I and II; a coating layer of the positive active material includes a material represented by M wherein 0.95≦a1≦1.1, 0≦b1≦0.999, 0≦c≦0.999, 0≦d≦0.999, 0.001≦e≦0.2, and M′ is selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element other than Ni, Co, or Mn, a rare earth element, and combinations thereof, wherein 0.95≦a2≦1.1, 0.001≦b2≦0.2, and M′ is selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element other than Mn, a rare earth element, and combinations thereof, and wherein R1 and R2 are the same or independently a halogen or C