US 12,278,380 B2
Battery current collector comprising metal plate having through holes and porous reinforcing material that fills through holes, and secondary battery comprising same
Yo Han Ko, Daejeon (KR); Jung Noh Lee, Daejeon (KR); and Jong Pil Park, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/434,939
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Aug. 11, 2020, PCT No. PCT/KR2020/010591
§ 371(c)(1), (2) Date Aug. 30, 2021,
PCT Pub. No. WO2021/075687, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 10-2019-0127753 (KR), filed on Oct. 15, 2019.
Prior Publication US 2022/0173405 A1, Jun. 2, 2022
Int. Cl. H01M 4/00 (2006.01); H01M 4/36 (2006.01); H01M 4/66 (2006.01); H01M 4/76 (2006.01)
CPC H01M 4/762 (2013.01) [H01M 4/364 (2013.01); H01M 4/661 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A current collector for a battery, comprising:
a metal plate having a plurality of through holes in a thickness direction; and
a porous reinforcing material filled in at least one of the plurality of through holes,
wherein
an electrode active material is disposed on the current collector,
the electrode active material incudes a compound that is not included in the porous reinforcing material, and
the porous reinforcing material includes a porous polymer substrate and a porous coating layer disposed on one or both surfaces of the porous substrate.