US 11,843,116 B2
Nickel active material precursor for lithium secondary battery, method for producing nickel active material precursor, nickel active material for lithium secondary battery produced by method, and lithium secondary battery having cathode containing nickel active material
Pilsang Yun, Yongin-si (KR); Jinhwa Kim, Yongin-si (KR); Hyunbeom Kim, Yongin-si (KR); Jaehyun Shim, 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 Apr. 13, 2021, as Appl. No. 17/229,373.
Application 17/229,373 is a continuation of application No. 16/462,887, granted, now 10,991,943, previously published as PCT/KR2017/014094, filed on Dec. 4, 2017.
Claims priority of application No. 10-2016-0163895 (KR), filed on Dec. 2, 2016.
Prior Publication US 2021/0234165 A1, Jul. 29, 2021
Int. Cl. H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/36 (2006.01); C01G 53/04 (2006.01); C01G 53/00 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/04 (2013.01); C01G 53/42 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A nickel-based active material precursor for a lithium secondary battery, comprising a core, an intermediate layer located on the core, and a shell located on the intermediate layer,
wherein a porosity of the nickel-based active material precursor gradually decreases in the order of the core, the intermediate layer, and the shell, each of the intermediate layer and the shell having a radial arrangement structure, and
wherein a crystal plane perpendicular to a crystal plane (001) of the nickel-based active material precursor is exposed on the surface of the nickel-based active material precursor.