| abstract |
A positive active material for a rechargeable lithium battery includes a core including a lithium composite metal oxide selected from the group consisting of compounds represented by the following Chemical Formula 1, Chemical Formula 2, and combinations thereof; and a shell on the core, the shell including lithium iron phosphate (LiFePO 4 ), and the lithium iron phosphate being present in an amount in a range of about 5 to about 15 wt % based on the total weight of the positive active material. n Li x MO 2 [Chemical Formula 1]n n (wherein, in the above Chemical Formula 1, M is one or more transition elements, and 1≦x≦1.1) n yLi 2 MnO 3 ·(1−y)LiM′O 2 [Chemical Formula 2]n n (wherein, in the above Chemical Formula 2, M′ is one or more transition elements, and 0≦x≦1). |