| 简介 |
Provided are a cathode active material for a lithium secondary battery and a lithium secondary battery including the same. The cathode active material includes a lithium composite oxide represented by the following Chemical Formula 1.
[in-line-formulae]Li[LizA]O2 [/in-line-formulae]
[in-line-formulae]A={M11-x-y(M10.78Mn0.22)x}M2y [Chemical Formula 1][/in-line-formulae]
In Chemical Formula, M1 and M2 are independently one or more selected from a transition element, a rare earth element, or a combination thereof, M1 and M2 are elements that are different from each other, −0.05≦z≦0.1, 0.8≦x+y≦1.8, and 0.05≦y≦0.35, and Ni has an oxidation number of 2.01 to 2.4. |
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