Method of manufacturing lithium nickel complex oxide, lithium nickel complex oxide manufactured thereby, and cathode active material including the same
View Patent ↗Provided is a lithium nickel complex oxide represented by Chemical Formula 1: Li w Ni II x1 Ni III x2 Mn y Co z F d O 2-d <Chemical Formula 1> where x1+x2+y+z=1, 0.4≤x1+x2≤0.9, 0<y≤0.6 and 0<z≤0.6, 0.9≤w≤1.3, and 0<d≤0.3.
1. A lithium nickel complex oxide represented by Chemical Formula 1:
Li w Ni II x1 Ni III x2 Mn y Co z F d O 2-d <Chemical Formula 1>
where x1+x2+y+z=1,
0.4≤x1+x2≤0.9,
0<y≤0.6 and 0<z≤0.6,
0.9≤w≤1.3, and 0<d≤0.3,
wherein x1/x2 satisfies 0.4≤x1/x2≤0.48.
2. A cathode active material comprising the lithium nickel complex oxide of claim 1 .
3. A cathode comprising the cathode active material of claim 2 .
4. A lithium secondary battery comprising:
a cathode;
an anode; and
a separator disposed between the anode and the cathode,
wherein the cathode is the cathode of claim 3 .