US 11,929,495 B2
Anode for lithium secondary battery and lithium secondary battery including the same
Hyo Mi Kim, Daejeon (KR); Moon Sung Kim, Daejeon (KR); Sang Baek Ryu, Daejeon (KR); Da Hye Park, Daejeon (KR); Seung Hyun Yook, Daejeon (KR); Hwan Ho Jang, Daejeon (KR); Kwang Ho Jeong, 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 May 18, 2023, as Appl. No. 18/319,931.
Claims priority of application No. 10-2022-0060746 (KR), filed on May 18, 2022.
Prior Publication US 2023/0378446 A1, Nov. 23, 2023
Int. Cl. H01M 4/38 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (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 10/0525 (2013.01); H01M 2004/027 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An anode for a lithium-ion secondary battery, the anode comprising:
a current collector;
a first anode mixture layer formed on at least one surface of the current collector; and
a second anode mixture layer formed on the first anode mixture layer,
wherein the first anode mixture layer and the second anode mixture layer include a carbon-based active material, respectively,
the first anode mixture layer includes a first binder, a first silicon-based active material, and a first conductive material,
the second anode mixture layer includes a second binder, a second silicon-based active material, and a second conductive material,
contents of the first conductive material and the second conductive material are different from each other with respect to the total combined weight of the first anode mixture layer and the second anode mixture layer,
types of the first silicon-based active material and the second silicon-based active material are different from each other, and
the first silicon-based active material includes a silicon oxide-based active material, and
the second silicon-based active material includes a Si—C composite.