US 12,080,874 B2
Negative electrode for rechargeable lithium battery
Jinhyon Lee, Suwon-si (KR); Bokhyun Ka, Suwon-si (KR); Kyeuyoon Sheem, Suwon-si (KR); Soonho Ahn, Suwon-si (KR); and Junkyu Lee, Suwon-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Oct. 12, 2021, as Appl. No. 17/498,861.
Application 17/498,861 is a continuation of application No. 16/394,077, filed on Apr. 25, 2019, granted, now 11,152,607.
Claims priority of application No. 10-2018-0049447 (KR), filed on Apr. 27, 2018.
Prior Publication US 2022/0029153 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/133 (2010.01); H01M 4/1393 (2010.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/133 (2013.01) [H01M 4/1393 (2013.01); H01M 4/58 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A negative electrode for a rechargeable lithium battery, the negative electrode comprising:
a current collector; and
a negative active material layer on at least one surface of the current collector, the negative active material layer including a negative active material and a conductive agent,
wherein:
the negative active material includes a carbon negative active material, and at least one of a Si negative active material, a Sn negative active material, or a lithium vanadium oxide negative active material,
the conductive agent includes a fiber-shaped conductive agent having a length of about 1 μm to about 200 μm,
a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater:
DD (Degree of Divergence)=(Ia/Itotal)*100   [Equation 1]
in Equation 1,
Ia is a sum of peak intensities at 2θ=42.4±0.2°, 43.4±0.2°, 44.6±0.2°, and 77.5±0.2° measured by XRD using a CuKα ray, and
Itotal is a sum of peak intensity at 2θ=42.4±0.2°, 43.4±0.2°, 44.6±0.2°, 54.7±0.2°, and 77.5±0.2° measured by XRD using a CuKα ray.