US 12,355,084 B2
Negative active material and rechargeable lithium battery including same
Jongmin Won, Yongin-si (KR); Jaehou Nah, Yongin-si (KR); Youngugk Kim, Yongin-si (KR); Changsu Shin, Yongin-si (KR); Sunil Park, Yongin-si (KR); Young-Min Kim, Yongin-si (KR); Eunji Kang, Yongin-si (KR); Doori Oh, Yongin-si (KR); and Yookyung Kim, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Oct. 27, 2023, as Appl. No. 18/384,494.
Claims priority of application No. 10-2023-0052137 (KR), filed on Apr. 20, 2023.
Prior Publication US 2024/0356041 A1, Oct. 24, 2024
Int. Cl. H01M 10/0525 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/628 (2013.01) [H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A negative active material, comprising:
a silicon-carbon composite including silicon and amorphous carbon;
a metal oxide; and
a metal silicate,
wherein:
an amount of the metal oxide is about 0.21 wt % to about 14 wt %, based on a total weight of the negative active material,
an amount of the metal silicate is about 0.1 wt % to about 7 wt % based on a total weight of the negative active material, and
an amount of the metal oxide is greater than an amount of the metal silicate.