Patent ID: 11942634
Assignee: BASF SE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 0:
1. A process for making a non-homogeneously coated electrode active material, the process comprising:
(a) treating an electrode active material with a metal alkoxide or metal halide or metal amide or alkyl metal compound, to obtain a material;
(b) treating the material obtained in (b) with moisture; and
(c) repeating the treating (a) and the treating (b) twice to 4 times, wherein in a last sequence of the treating (a) and the treating (b), moisture is at least partially substituted by ozone,
wherein the electrode active material subjected to the treating has a formula

Li1+xTM1−xO2,, wherein TM is a combination of Ni, Co, and, optionally, Mn, and, optionally, Al, Ti, Mo, W, and/or Zr in metallic form, and x is in a range of from zero to 0.2,
wherein at least 60 mole-% of a transition metal of TM is Ni, and
wherein the electrode active material has a residual moisture content in a range of from 50 to 1,000 ppm.