	US 11,984,578 B2
	Process for making an at least partially coated electrode active material
Heino Sommer, Ludwigshafen (DE); Christoph Erk, Ludwigshafen (DE); and Thomas Schaub, Ludwigshafen (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/595,860
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Jun. 17, 2020, PCT No. PCT/EP2020/066808 § 371(c)(1), (2) Date Nov. 29, 2021, PCT Pub. No. WO2021/001153, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 19183616 (EP), filed on Jul. 1, 2019.
Prior Publication US 2022/0246900 A1, Aug. 4, 2022
Int. Cl. H01M 10/05 (2010.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/0421 (2013.01) [H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 2004/028 (2013.01)]

8 Claims

1. A process for making an at least partially coated electrode active material wherein the process comprises the following steps:

(a) providing an electrode active material according to general formula Li_1+xTM_1−xO₂, wherein TM is a combination of Ni and Co or Ni and Al, and, optionally, Mn, and, optionally,

at least one metal chosen from Ga, Nb, Ta, Mo, B, Sn, V, W, Mg, Ti, and Zr, and x ranges from zero to 0.2,

(b) treating the electrode active material with at least one compound of Co, wherein Co is a complex with at least one CO ligand per Co atom, and

(c) treating the material obtained in step (b) with an oxidant chosen from inorganic peroxides and oxygen, and a mixture of ozone and oxygen.