US 11,715,830 B2
Negative electrode for a rechargeable lithium battery and rechargeable lithium battery including the same
Jinhyon Lee, Suwon-si (KR); Bokhyun Ka, Suwon-si (KR); Kyeuyoon Sheem, Suwon-si (KR); and Soonho Ahn, Suwon-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Nov. 30, 2021, as Appl. No. 17/537,765.
Application 17/537,765 is a continuation of application No. 16/382,331, filed on Apr. 12, 2019, granted, now 11,201,329.
Claims priority of application No. 10-2018-0046210 (KR), filed on Apr. 20, 2018.
Prior Publication US 2022/0085371 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/587 (2013.01) [H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)] 8 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 the current collector, the negative active material including a carbon negative active material;
wherein:
a DD (Degree of Divergence) value of the negative electrode, as defined by the following 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 intensities at 2θ=26.5±0.2°, 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,
the negative electrode has an active region facing a positive electrode and an inactive region not facing the positive electrode, and
a DD value of the inactive region of the negative electrode is about 24 to about 70.