US 12,283,691 B2
Cathode active material and method for making such cathode active material
Tobias Maximilian Teufl, Poing (DE); and Benjamin Johannes Herbert Bergner, Ludwigshafen am (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/758,728
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Jan. 28, 2021, PCT No. PCT/EP2021/051910
§ 371(c)(1), (2) Date Jul. 13, 2022,
PCT Pub. No. WO2021/156124, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 20156052 (EP), filed on Feb. 7, 2020.
Prior Publication US 2023/0053750 A1, Feb. 23, 2023
Int. Cl. H01M 4/525 (2010.01); C01G 53/00 (2006.01); C01G 53/50 (2025.01); H01M 4/02 (2006.01); H01M 4/505 (2010.01)
CPC H01M 4/525 (2013.01) [C01G 53/50 (2013.01); H01M 4/505 (2013.01); C01P 2002/50 (2013.01); C01P 2002/74 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/10 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A cathode active material in particulate form with a mean particle diameter ranging from 2 μm to 16 μm (D50), wherein the cathode active material has a composition Li1+xTM1−xO2, wherein x ranges from 0.1 to 0.2 and TM is a combination of elements according to general formula (I),
(NiaCobMnc)1−d−eM1dM2e  (I)
wherein:
a ranges from 0.20 to 0.40,
b ranges from zero to 0.15,
c ranges from 0.50 to 0.75,
d ranges from zero to 0.015, and
e ranges of from zero to 0.02,
M1 is selected from Al, Ti, Zr, Mo, Fe, Nb, and Mg,
M2 is selected from B and K,
with a+b+c=1.0
wherein the cathode active material has a specific surface (BET) ranging from 0.5 m2/g to 10 m2/g and a pressed density of at least 2.9 g/cm3, and
wherein the cathode active material has an average primary particle diameter in the range of from 200 nm to 3,000 nm.