CPC H01M 4/525 (2013.01) [C01G 53/50 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/60 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] | 10 Claims |
1. A positive electrode active material for a lithium secondary battery, the positive electrode active material comprising a nickel-based lithium composite metal oxide single particle,
wherein the single particle includes a plurality of crystal grains, and
a metal doped in a crystal lattice of the single particle, wherein the metal is one or more metals selected from the group consisting of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, and B,
wherein the single particle has an average particle size (D50) of from 3.5 μm to 8 μm.
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