Patent ID: 11949098
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. The positive active material of claim 1, wherein the core having the layered structure is represented by Chemical Formula 1:

Li1±x1Co1−x2−x3M1x2M2x3O2  [Chemical Formula 1]

wherein
0<x1<0.05, 0.005≤x2≤0.02, 0.005≤x3≤0.025,
M1 is selected from Mg, Al, Co, Ni, K, Na, Ca, Si, Fe, Cu, Zn, Ti, Sn, V, Ge, Ga, B, P, Se, Bi, As, Zr, Mn, Cr, Ge, Sr, V, Sc, Y, and a combination thereof,
M2 is selected from Al, Mg, Co, Ni, K, Na, Ca, Si, Fe, Cu, Zn, Ti, Sn, V, Ge, Ga, B, P, Se, Bi, As, Zr, Mn, Cr, Ge, Sr, V, Sc, Y, and a combination thereof, and
M1 and M2 are different from one another.