US 12,068,480 B2
Nickel-based active material precursor for lithium secondary battery, method of preparing the same, nickel-based active material for lithium secondary battery formed therefrom, and lithium secondary battery including positive electrode including nickel-based active material
Pilsang Yun, Yongin-si (KR); Jangsuk Hyun, Yongin-si (KR); and Wooyoung Yang, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on May 1, 2023, as Appl. No. 18/310,378.
Application 18/310,378 is a continuation of application No. 16/452,282, filed on Jun. 25, 2019, granted, now 11,670,768.
Claims priority of application No. 10-2018-0073588 (KR), filed on Jun. 26, 2018.
Prior Publication US 2023/0268503 A1, Aug. 24, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/52 (2010.01); C01G 53/00 (2006.01); H01M 4/36 (2006.01); H01M 4/50 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/05 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/006 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2004/50 (2013.01); H01M 2004/028 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A nickel-based active material precursor for a lithium secondary battery, the nickel-based active material precursor comprising:
a secondary particle comprising a plurality of particulate structures connected in a single structure, each particulate structure of the plurality of particulate structure having a radial center,
wherein each particulate structure is an agglomerate of a plurality of primary particles, and
wherein each particulate structure comprises a core portion and a shell portion, the shell portion comprising primary particles radially arranged on the core portion,
wherein major axes of the primary particles in 50% or more of the primary particles at an outer surface of the secondary particle are normal to a (100) plane or a (110) plane of the primary particles at the outer surface of the secondary particle.