US 12,244,019 B2
Electrode assembly with insulation film formed on tab, manufacturing method thereof, and lithium secondary battery comprising the same
Hyunwoong Yun, Daejeon (KR); and Hoejin Hah, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/629,134
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jan. 29, 2021, PCT No. PCT/KR2021/001228
§ 371(c)(1), (2) Date Jan. 21, 2022,
PCT Pub. No. WO2021/172774, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 10-2020-0024624 (KR), filed on Feb. 27, 2020.
Prior Publication US 2022/0231300 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/64 (2006.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/64 (2013.01) [H01M 4/366 (2013.01); H01M 4/623 (2013.01); H01M 4/624 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electrode assembly for a lithium secondary battery comprising:
an electrode, a separator, and an opposing electrode,
wherein the electrode comprises a structure in which an electrode active material layer is formed on an electrode current collector,
wherein the electrode current collector comprises an electrode current collection substrate and a tab extending from the electrode current collection substrate,
wherein an insulation film is formed on some or all of at least one surface of the tab extending from the electrode current collection substrate, and
wherein the insulation film is an organic-inorganic hybrid film comprising inorganic particles and a binder polymer.