US 12,261,302 B2
Negative electrode, secondary battery including the negative electrode, and method of preparing the negative electrode
Tae Gon Kim, Daejeon (KR); Hyung Man Cho, Daejeon (KR); Il Jae Moon, Daejeon (KR); Sun Wook Park, Daejeon (KR); and Min Kwak, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/616,417
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Jul. 31, 2020, PCT No. PCT/KR2020/010154
§ 371(c)(1), (2) Date Dec. 3, 2021,
PCT Pub. No. WO2021/020939, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 10-2019-0094003 (KR), filed on Aug. 1, 2019.
Prior Publication US 2022/0238886 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/62 (2006.01); H01M 4/134 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/625 (2013.01) [H01M 4/134 (2013.01); H01M 4/1395 (2013.01); H01M 4/366 (2013.01); H01M 4/483 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01); H01M 2220/10 (2013.01); H01M 2220/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A negative electrode comprising a negative electrode active material layer,
wherein the negative electrode active material layer comprises a negative electrode active material and a conductive agent,
wherein the negative electrode active material comprises a silicon-based active material,
the silicon-based active material comprises SiOx(0≤x<2), and
the conductive agent comprises a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded side by side in a single plane,
wherein the carbon nanotube structure has an average diameter of 10 nm to 100 nm.