US 11,894,548 B2
Negative electrode active material, method of preparing the negative electrode active material, negative electrode, and secondary battery including the negative electrode
Hee Won Choi, Daejeon (KR); and Jae Wook Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/264,097
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Aug. 16, 2019, PCT No. PCT/KR2019/010432
§ 371(c)(1), (2) Date Jan. 28, 2021,
PCT Pub. No. WO2020/036461, PCT Pub. Date Feb. 20, 2020.
Claims priority of application No. 10-2018-0096155 (KR), filed on Aug. 17, 2018.
Prior Publication US 2021/0305551 A1, Sep. 30, 2021
Int. Cl. H01M 4/36 (2006.01); C01B 32/205 (2017.01); C01B 32/21 (2017.01); H01M 4/133 (2010.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [C01B 32/205 (2017.08); C01B 32/21 (2017.08); H01M 4/133 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); C01P 2004/50 (2013.01); C01P 2004/61 (2013.01); C01P 2004/84 (2013.01); C01P 2006/12 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A negative electrode active material comprising:
a core comprising artificial graphite; and
a carbon coating layer disposed on a surface of the core,
wherein an edge plane of the negative electrode active material has a specific surface area of 1.0 m2/g to 1.9 m2/g.