US 12,002,949 B2
Negative electrode and secondary battery including the same
Hyun-Min Kim, Daejeon (KR); Min-Kyung Kim, Daejeon (KR); Jong-Heon Seol, Daejeon (KR); Ki-Won Sung, Daejeon (KR); Myung-Ki Lee, Daejeon (KR); Eun-Ju Lee, Daejeon (KR); and Young-Eun Choi, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 16/652,283
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Nov. 30, 2018, PCT No. PCT/KR2018/015154
§ 371(c)(1), (2) Date Mar. 30, 2020,
PCT Pub. No. WO2019/108039, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 10-2017-0164373 (KR), filed on Dec. 1, 2017.
Prior Publication US 2020/0243848 A1, Jul. 30, 2020
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); H01M 10/0525 (2010.01)
CPC H01M 4/366 (2013.01) [H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A negative electrode comprising:
a current collector;
a first negative electrode active material layer positioned on at least one surface of the current collector, wherein the first negative electrode active material layer comprises a first carbonaceous active material; and
a second negative electrode active material layer positioned on a surface of the first negative electrode active material layer, wherein the second negative electrode active material layer comprises a silicon-based active material and carbon nanotubes,
wherein the carbon nanotubes are positioned in a line contact mode and distributed homogeneously only on the surface of the silicon-based active material, and
wherein the second negative electrode active material layer further comprises a second carbonaceous active material.