US 12,218,343 B2
Electrode manufacturing method comprising cleaning step using laser, electrode manufactured by method, and secondary battery comprising same
Hyoung Sik Choi, Daejeon (KR); Jun Hyeak Huh, Daejeon (KR); Jeoung Soo Kim, Daejeon (KR); Ki Woong Kim, Daejeon (KR); In Gu An, Daejeon (KR); and Ki Eun Sung, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/433,858
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Jan. 21, 2021, PCT No. PCT/KR2021/000816
§ 371(c)(1), (2) Date Aug. 25, 2021,
PCT Pub. No. WO2021/157915, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10-2020-0014827 (KR), filed on Feb. 7, 2020.
Prior Publication US 2022/0149355 A1, May 12, 2022
Int. Cl. H01M 4/36 (2006.01); H01M 4/04 (2006.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 4/66 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/0404 (2013.01); H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); H01M 4/663 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing an electrode, comprising:
cleaning an end of a coated part contacting a non-coated part by irradiating laser to a top-coated electrode mixture layer and a back-coated electrode mixture layer of an electrode current collector along a boundary line of the coated part,
wherein the cleaning is performed so that a line of irradiating laser to the top-coated electrode mixture layer of the electrode current collector and a line of irradiating laser to the back-coated electrode mixture layer of the electrode current collector correspond to each other in a direction perpendicular to that of the electrode current collector,
wherein the cleaning is performed so that a formation angle at the end of the coated part is in a range of 75° to 88° on a boundary line of the coated part contacting the non-coated part.