US 12,034,146 B2
Electrode for lithium secondary battery and lithium secondary battery including the same
Gi Hyeon Moon, Daejeon (KR); Jong Hyuk Lee, Daejeon (KR); Mi Ryeong Lee, Daejeon (KR); and Hee Gyoung Kang, Daejeon (KR)
Assigned to SK On Co., Ltd., Seoul (KR)
Filed by SK ON CO., LTD., Seoul (KR)
Filed on Jul. 12, 2023, as Appl. No. 18/351,183.
Claims priority of application No. 10-2022-0157578 (KR), filed on Nov. 22, 2022; and application No. 10-2023-0028636 (KR), filed on Mar. 3, 2023.
Prior Publication US 2024/0170642 A1, May 23, 2024
Int. Cl. H01M 4/131 (2010.01); H01M 4/64 (2006.01); H01M 10/05 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/131 (2013.01) [H01M 4/64 (2013.01); H01M 10/05 (2013.01); H01M 10/052 (2013.01); H01M 2004/021 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electrode for a lithium secondary battery comprising:
an electrode current collector;
an electrode active material layer disposed on at least one surface of the electrode current collector and comprising electrode active material particles; and
a lithium salt-containing coating formed on at least portions of surfaces of the electrode active material particles and/or at least a portion of a surface of the electrode active material layer,
wherein the electrode has an arithmetic average value of surface roughness (Ra) represented by Equation 1:
Ra≤25 nm  [Equation 1]
wherein, in Equation 1, Ra is a value obtained by calculating an arithmetic average of surface roughness values measured in 20 or more measurement regions of the surface of the electrode using an atomic force microscopy in a scan range of 0.5 μm×0.5 μm.