US 11,688,858 B2
Lithium secondary battery
Hyeri Eom, Yongin-si (KR); Seungjae Lee, Yongin-si (KR); Sol Choi, Yongin-si (KR); and Da-Un Han, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Appl. No. 16/609,354
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
PCT Filed Mar. 26, 2018, PCT No. PCT/KR2018/003510
§ 371(c)(1), (2) Date Oct. 29, 2019,
PCT Pub. No. WO2018/212446, PCT Pub. Date Nov. 22, 2018.
Claims priority of application No. 10-2017-006245 8 (KR), filed on May 19, 2017.
Prior Publication US 2020/0194798 A1, Jun. 18, 2020
Int. Cl. H01M 4/74 (2006.01); H01M 4/66 (2006.01); H01M 10/052 (2010.01); H01M 4/72 (2006.01); H01M 4/75 (2006.01)
CPC H01M 4/747 (2013.01) [H01M 4/661 (2013.01); H01M 4/667 (2013.01); H01M 4/668 (2013.01); H01M 10/052 (2013.01); H01M 4/665 (2013.01); H01M 4/72 (2013.01); H01M 4/75 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A lithium secondary battery comprising an electrode, the electrode including:
a current collector comprising a structure in a fabric form in which fiber bundles are cross-woven, wherein:
each of the fiber bundles is formed of fiber yarns,
the fiber yarns each include a polymer fiber and a metal layer surrounding the polymer fiber;
a diameter of the fiber bundles is 18 μm to 20 μm;
an active material layer disposed on at least one surface of the current collector,
the metal layer comprises a first metal layer surrounding the polymer fiber and a second metal layer surrounding the first metal layer,
the first metal layer comprises nickel, and
the second metal layer comprises copper.