US 12,456,725 B2
Anode for lithium secondary battery and lithium secondary battery including the same
Hwan Ho Jang, Daejeon (KR); Moon Sung Kim, Daejeon (KR); Hyo Mi Kim, Daejeon (KR); Sang Baek Ryu, Daejeon (KR); Seung Hyun Yook, Daejeon (KR); Da Bin Chung, Daejeon (KR); Jun Hee Han, Daejeon (KR); Seong Cho Kwon, Daejeon (KR); Da Hye Park, Daejeon (KR); Sang Won Park, Daejeon (KR); and Sang In Bang, Daejeon (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK ON CO., LTD., Seoul (KR)
Filed on Apr. 12, 2024, as Appl. No. 18/633,523.
Claims priority of application No. 10-2023-0050065 (KR), filed on Apr. 17, 2023.
Prior Publication US 2024/0347708 A1, Oct. 17, 2024
Int. Cl. H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 4/583 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 4/366 (2013.01) [H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/622 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An anode for a lithium secondary battery, comprising:
an anode current collector; and
an anode active material layer formed on at least one surface of the anode current collector, wherein the anode active material layer includes a carbon-based active material, a first silicon-based active material including a carbon-silicon composite active material, and a second silicon-based active material including a silicon oxide represented by SiOx, wherein 0<x<2,
wherein a content of the first silicon-based active material is in a range from 2 wt % to 40 wt % based on a total weight of the anode active material layer, and
wherein the carbon-silicon composite active material includes a porous carbon core and a silicon coating formed on the porous carbon core, and
wherein a sum of contents of the first silicon-based active material and the second silicon-based active material is in a range from 30 wt % to 60 wt % based on the total weight of the anode active material layer.