Patent ID: 11901552
Assignee: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC H

Claim 7:
8. The positive active material for the lithium rechargeable battery of claim 7, wherein
the composition of the shell portion of the nickel-based lithium metal oxide particle is represented by Chemical Formula 5 in the interface with the core portion, is represented by Chemical Formula 6 at the outermost part of the shell portion, and each molar content of the nickel (Ni), M1, M2, and M3 is gradually changed from the interface to the outermost part:

Lim6[Ni1-w6-x6-y6-z6Cow6M1x6M2y6M3z6]n6O2-p6Xp6[  Chemical Formula 6]

(in Chemical Formula 6,
M1 is one element selected from a group including Mn, Mg, Sn, Ca, Ge, and Ga,
M2 is Zr, M3 is Al,
X is one element selected from a group including F, N, and P,
w6, x6, y6, z6, and p6 are respectively 0<w6≤0.3, 0<x6≤0.3, 0<y6≤0.007, 0<z6 ≤0.006, 0<w6+x6+y6+z6≤0.5, and 0≤p6≤0.1, 0.95≤m6≤1.1, and 0.95≤n6≤1.1).