US 11,929,496 B2
Positive electrode and secondary battery including same
Jung Woo Yoo, Daejeon (KR); Ye Lin Kim, Daejeon (KR); and Tae Gon Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., (KR)
Appl. No. 16/958,925
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Feb. 1, 2019, PCT No. PCT/KR2019/001479
§ 371(c)(1), (2) Date Jun. 29, 2020,
PCT Pub. No. WO2019/156461, PCT Pub. Date Aug. 15, 2019.
Claims priority of application No. 10-2018-0015313 (KR), filed on Feb. 7, 2018.
Prior Publication US 2020/0343541 A1, Oct. 29, 2020
Int. Cl. H01M 4/00 (2006.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/1393 (2010.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/38 (2013.01) [H01M 4/0404 (2013.01); H01M 4/133 (2013.01); H01M 4/1393 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 2220/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A positive electrode comprising:
a current collector; and
a positive electrode active material layer disposed on the current collector,
wherein the positive electrode active material layer includes a positive electrode active material, a binder, and-a multi-walled carbon nanotubes,
wherein the multi-walled carbon nanotubes have an average length of 1 to −2 μm and have a length standard deviation of 0.5 μm or less,
wherein lengths of all of the multi-walled carbon nanotubes are from 0.5 to −3.0 μm, and
wherein the multi-walled carbon nanotubes are contained in an amount of 0.1 to 1 wt % with respect to a total weight of the positive electrode active material layer.