US 11,967,714 B2
Positive electrode active material for lithium secondary battery and preparation method thereof
Tae Gu Yoo, Daejeon (KR); Younguk Park, Daejeon (KR); Jintae Hwang, Daejeon (KR); Wang Mo Jung, Daejeon (KR); and Sungbin Park, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Filed by LG Energy Solution, Ltd., Seoul (KR)
Filed on Jun. 27, 2023, as Appl. No. 18/214,800.
Application 18/214,800 is a continuation of application No. 18/100,778, filed on Jan. 24, 2023.
Application 18/100,778 is a continuation of application No. 16/755,688, granted, now 11,594,727, issued on Feb. 28, 2023, previously published as PCT/KR2018/014367, filed on Nov. 21, 2018.
Claims priority of application No. 10-2017-0156745 (KR), filed on Nov. 22, 2017; and application No. 10-2018-0143840 (KR), filed on Nov. 20, 2018.
Prior Publication US 2023/0352678 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/00 (2006.01); C01G 53/00 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/50 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/60 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A positive electrode active material for a lithium secondary battery, the positive electrode active material comprising a nickel-based lithium composite metal oxide single particle,
wherein the single particle includes a plurality of crystal grains, and
a metal doped in a crystal lattice of the single particle, wherein the metal is one or more metals selected from the group consisting of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, and B,
wherein the single particle has an average particle size (D50) of from 3.5 μm to 8 μm.