US 11,791,458 B2
Anode active material for lithium secondary battery, anode active material slurry and lithium secondary battery including the same
Gwi Ok Park, Daejeon (KR); Ju Ho Chung, Daejeon (KR); Joon Sup Kim, Daejeon (KR); Eun Jun Park, Daejeon (KR); and Dong Il Jang, Daejeon (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK ON CO., LTD., Seoul (KR)
Filed on Oct. 6, 2021, as Appl. No. 17/494,884.
Claims priority of application No. 10-2021-0021719 (KR), filed on Feb. 18, 2021.
Prior Publication US 2022/0263071 A1, Aug. 18, 2022
Int. Cl. H01M 4/485 (2010.01); H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 4/587 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/483 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); H01M 2220/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An anode active material for a lithium secondary battery comprising:
a silicon oxide which comprises a carbon coating layer formed on a surface thereof, and is doped with magnesium,
wherein a ratio of peak area at 1303 eV to a sum of a peak area at 1304.5 eV and a peak area at 1303 eV, which appear in a Mg1s spectrum when measuring by X-ray photoelectron spectroscopy (XPS), is 60% or less.