US 12,322,790 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); Da Hye Park, Daejeon (KR); Seung Hyun Yook, Daejeon (KR); Da Bin Chung, Daejeon (KR); and Jun Hee Han, Daejeon (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK ON CO., LTD., Seoul (KR)
Filed on Oct. 17, 2023, as Appl. No. 18/488,034.
Application 18/488,034 is a continuation of application No. 18/329,905, filed on Jun. 6, 2023, granted, now 11,929,491.
Claims priority of application No. 10-2022-0091594 (KR), filed on Jul. 25, 2022.
Prior Publication US 2024/0047651 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
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 4/587 (2010.01); H01M 4/62 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 2004/027 (2013.01)] 14 Claims
 
1. An anode for a lithium secondary battery, comprising:
an anode current collector;
a first anode active material layer disposed on at least one surface of the anode current collector; and
a second anode active material layer disposed on the first anode active material layer,
wherein each of the first anode active material layer and the second anode active material layer comprises a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium,
a content of the first silicon-based active material included in the first anode active material layer is greater than or equal to a content of the second silicon-based active material included in the first anode active material layer, and
a content of the first silicon-based active material included in the second anode active material layer is less than or equal to a content of the second silicon-based active material included in the second anode active material layer.
 
14. An anode for a lithium secondary battery, comprising:
an anode current collector;
a first anode active material layer disposed on at least one surface of the anode current collector; and
a second anode active material layer disposed on the first anode active material layer,
wherein each of the first anode active material layer and the second anode active material layer comprises a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium,
a content of the first silicon-based active material included in the first anode active material layer is less than or equal to a content of the second silicon-based active material included in the first anode active material layer, and
a content of the first silicon-based active material included in the second anode active material layer is greater than or equal to a content of the second silicon-based active material included in the second anode active material layer.