	US 12,155,057 B2
	Anode for lithium secondary battery and lithium secondary battery comprising same
Jinhyon Lee, Yongin-si (KR); Hongjeong Kim, Yongin-si (KR); Hyeri Eom, Yongin-si (KR); Sangjun Lee, Yongin-si (KR); and Daeseop Lim, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Appl. No. 17/594,486
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
PCT Filed Apr. 17, 2020, PCT No. PCT/KR2020/005152 § 371(c)(1), (2) Date Oct. 18, 2021, PCT Pub. No. WO2020/218780, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10-2019-0047928 (KR), filed on Apr. 24, 2019.
Prior Publication US 2022/0263063 A1, Aug. 18, 2022
Int. Cl. H01M 4/133 (2010.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/133 (2013.01) [H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/587 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01)]

14 Claims

1. An anode for a lithium secondary battery, comprising:

a current collector; and

an anode active material layer formed on the current collector, and comprising a carbon-based anode active material,

wherein the anode active material layer has a multi-layer structure of three or more layers,

at least one layer of the anode active material layer is an oriented layer having a DD (Degree of Divergence) value defined by Equation 1 of 19 or more:

DD (Degree of Divergence)=(I_a/I_total)*100 [Equation 1]

(in Equation 1,

I_ais a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and I_totalis a sum of peak intensities at all anglesmeasured by XRD using a CuKα ray), wherein at least one layer of the anode active material layer is an oriented layer having the DD value of 19 or more, and at least one layer is a non-oriented layer having the DD value of less than 19.