US 12,394,795 B2
Lithium secondary battery and method of fabricating anode for lithium secondary battery
Ji Hyung Kim, Daejeon (KR); Young Ha Kim, Daejeon (KR); Sang Bin Lee, Daejeon (KR); and Ho Jin Hwang, Daejeon (KR)
Assigned to SK ON CO., LTD., Seoul (KR)
Filed by SK ON CO., LTD., Seoul (KR)
Filed on May 27, 2024, as Appl. No. 18/674,931.
Application 18/674,931 is a division of application No. 18/336,622, filed on Jun. 16, 2023, granted, now 12,034,166.
Claims priority of application No. 10-2022-0078844 (KR), filed on Jun. 28, 2022.
Prior Publication US 2024/0313221 A1, Sep. 19, 2024
Int. Cl. H01M 4/62 (2006.01); H01M 4/04 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 4/621 (2013.01) [H01M 4/04 (2013.01); H01M 4/0404 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of fabricating an anode for a lithium secondary battery, comprising:
preparing an anode current collector having an anode active material layer region;
forming a binder layer on the anode current collector along an outer portion of the anode active material layer region; and
forming an anode slurry layer containing an anode active material and a binder on a surface of the anode current collector in the anode active material layer region and on the binder layer,
wherein the anode active material layer region includes an overlapping portion overlying the cathode active material layer in a planar direction and a margin portion around the overlapping portion,
wherein the margin portion corresponds to the outer portion and does not overlap the cathode active material layer in the planar direction, and
wherein the margin portion has an electrical resistance greater than that of the overlapping portion.