US 12,244,011 B2
Modified high-nickel cathode material and preparation method thereof
Mengxia Mo, Changsha (CN); Haiyang Yu, Changsha (CN); Bo Tang, Changsha (CN); and Guishi Han, Changsha (CN)
Assigned to BASF SHANSHAN BATTERY MATERIALS CO., LTD., Changsha (CN)
Appl. No. 18/005,965
Filed by BASF SHANSHAN BATTERY MATERIALS CO., LTD., Changsha (CN)
PCT Filed Jun. 29, 2021, PCT No. PCT/CN2021/103022
§ 371(c)(1), (2) Date Jan. 18, 2023,
PCT Pub. No. WO2022/022198, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 202010748864.7 (CN), filed on Jul. 30, 2020.
Prior Publication US 2023/0327102 A1, Oct. 12, 2023
Int. Cl. H01M 4/525 (2010.01); C01G 53/42 (2025.01); H01M 4/58 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/42 (2013.01); H01M 4/5825 (2013.01); C01P 2002/52 (2013.01); C01P 2002/72 (2013.01); C01P 2002/77 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2004/32 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A modified high-nickel cathode material, wherein the modified high-nickel cathode material is a SO42−-doped modified high-nickel cathode material, and SO42− is distributed in a secondary particle of the modified high-nickel cathode material with a content gradient from high inside to low outside, wherein the modified high-nickel cathode material has a chemical formula of LixNiyCo(1-y-z)MzSγO2, wherein 0.98≤x≤1.1, 0.8≤y≤1, 0≤z≤0.2, 0.003≤γ≤0.15, and M is Al or Mn.