Cathode active materials for lithium ion batteries

1. A plurality of particles comprising a compound represented by Formula (I):

Li α Co 1-x-y-z Me w Mn x Ni y Al z O δ   (I)

wherein 0.95≤α≤1.05, 0.005≤x≤0.050, 0.005≤y≤0.040, 0<z≤<0.070, 0≤w≤0.020, and 1.90≤δ≤2.10;

wherein Me is Zr, and

wherein a BET surface area of an average particle is 0.111 to 0.121 m 2 /g.

2. The plurality of particles of claim 1 , wherein the compound comprises Al from Al 2 O 3 coating.

3. The plurality of particles of claim 1 , wherein the compound comprises Al from doping for a core.

4. The plurality of particles of claim 1 , wherein Me is from an oxide coating.

5. The plurality of particles of claim 1 , wherein Me is from doping for a core.

6. The plurality of particles of claim 1 , wherein x for Mn is from 0.010 to 0.035.

7. The plurality of particles of claim 1 , wherein x for Mn is from 0.005 to 0.015.

8. The plurality of particles of claim 1 , wherein y for Ni is from 0.010 to 0.030.

9. The plurality of particles of claim 1 , wherein y for Ni is from 0.010 to 0.025.

10. The plurality of particles of claim 1 , wherein y for Ni is from 0.010 to 0.015.

11. The plurality of particles of claim 1 , wherein z for Al is equal to or less than 0.055.

12. The plurality of particles of claim 1 , wherein z for Al is equal to or less than 0.035.

13. The plurality of particles of claim 1 , wherein z for Al is equal to or less than 0.015.

14. The plurality of particles of claim 1 , wherein w for Me is equal to or less than 0.015.

15. The plurality of particles of claim 1 , wherein w for Me is equal to or less than 0.010.

16. The plurality of particles of claim 1 , wherein w for Me is equal to or less than 0.005.

17. The plurality of particles of claim 1 , wherein the BET surface area of an average particle is selected from 0.121 m 2 /g and 0.111 m 2 /g.

18. A cathode active material comprising the plurality of particles of claim 1 .

19. A cathode comprising the cathode active material of claim 18 .

20. A battery comprising:

a cathode of claim 19 ;

a separator; and

an anode.

21. A particle comprising

a core comprising a compound of Formula (II)

Li α CO 1-s-t-u-v Me s Mn t Ni u Al v O δ   (II)

and a coating comprising an oxide selected from Al 2 O 3 , ZrO 2 , MgO, TiO 2 , and a combination thereof;

wherein Me is Zr,

wherein 0.95≤a≤1.05, 0<t≤0.050, 0<u≤0.040, 0<v≤0.050, 0≤s≤0.020, and 1.90≤δ≤2.10, and

wherein a BET surface area of the particle is 0.111 to 0.121 m 2 /g.

22. The particle of claim 21 , wherein Me or Al is from a doping material for the core.

23. The particle of claim 21 , wherein t for Mn is from 0.010 to 0.035.

24. The particle of claim 21 , wherein t for Mn is from 0.010 to 0.025.

25. The particle of claim 21 , wherein t for Mn is from 0.005 to 0.015.

26. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.030.

27. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.025.

28. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.020.

29. The particle of claim 21 , wherein u for Ni is from 0.010 to 0.015.

30. The particle of claim 21 , wherein v for Al is equal to or less than 0.035.

31. The particle of claim 21 , wherein v for Al is equal to or less than 0.025.

32. The particle of claim 21 , wherein v for Al is equal to or less than 0.015.

33. The particle of claim 21 , wherein w for Me is equal to or less than 0.010.

34. The particle of claim 21 , wherein w for Me is equal to or less than 0.05.

35. A cathode active material comprising the plurality of particles of claim 21 .

36. A cathode comprising the cathode active material of claim 35 .

37. A battery comprising:

a cathode of claim 36 ;

a separator; and

an anode.

38. The particle of claim 21 , wherein the BET surface area of the particle is selected from 0.121 m 2 /g and 0.111 m 2 /g.