US 11,888,153 B2
Method for preparing positive electrode active material for secondary battery, positive electrode active material thus prepared and lithium secondary battery including the same
Dong Joon Ahn, Daejeon (KR); Moon Kyu Cho, Daejeon (KR); and Sung Soon Park, Daejeon (KR)
Assigned to LG Chem, Ltd.
Filed by LG Chem, Ltd., Seoul (KR)
Filed on Aug. 27, 2021, as Appl. No. 17/459,344.
Application 17/459,344 is a division of application No. 16/481,718, granted, now 11,189,827, previously published as PCT/KR2018/011579, filed on Sep. 28, 2018.
Claims priority of application No. 10-2017-0127757 (KR), filed on Sep. 29, 2017; and application No. 10-2018-0115214 (KR), filed on Sep. 27, 2018.
Prior Publication US 2021/0391571 A1, Dec. 16, 2021
Int. Cl. H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/485 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A positive electrode active material for a secondary battery, the positive electrode active material comprising:
a lithium transition metal oxide particle; and
a coating layer formed on a surface of the lithium transition metal oxide particle,
wherein the coating layer is formed in a film form,
wherein the coating layer has a thickness from 15-2,000 nm, and
the coating layer includes a carbonized coating polymer and carbide, wherein the lithium transition metal oxide particle has a layered structure or a spinel structure.