公开(公告)号：US10741848B2

公开(公告)日：2020-08-11

申请号：US15914568

申请日：2018-03-07

Applicant: LS MTRON LTD.

Inventor： Seung Min Kim ,  Shan Hua Jin

IPC: H01M4/66 ,  H01M4/133 ,  C25D3/38 ,  C25D7/06 ,  C25D1/04 ,  C23C22/37 ,  C25D5/04 ,  C25D5/48 ,  C25D1/20 ,  H01M4/13 ,  H01M4/587 ,  H01M4/48 ,  H01M4/02 ,  H01M10/0525 ,  H01M4/36

Abstract: Provided is a copper foil. The copper foil includes a copper layer and a protective layer disposed on the copper layer, wherein a surface of the protective layer has a maximum height roughness (Rmax) of 0.6 μm to 3.5 μm, a peak density (PD) of 5 to 110, and an oxygen atomic amount of 22 at % (atomic %) to 67 at %.

公开(公告)号：US10547081B2

公开(公告)日：2020-01-28

申请号：US15662785

申请日：2017-07-28

Applicant: LS Mtron Ltd.

Inventor： Seung Min Kim ,  Shan Hua Jin

IPC: H01M10/0562 ,  H01M4/04 ,  H01M4/38 ,  C25D1/20 ,  C25D1/00 ,  C25D1/04 ,  C25D3/38 ,  C25D7/06 ,  H01M10/0525

Abstract: An electrolytic copper foil capable of improving a capacity retention rate of a secondary battery, an electrode including the same, a secondary battery including the same, and a method of manufacturing the same. The electrolytic copper foil, which includes a first surface and a second surface opposite the first surface, includes a copper layer including a matte surface facing the first surface and a shiny surface facing the second surface, and a first protective layer on the matte surface of the copper layer, wherein the first surface has a peak density (PD) of 3 to 110, a texture coefficient [TC(220)] of a (220) plane of 1.32 or less, and a surface roughness (Rz) of 0.5 to 2.7 μm.

公开(公告)号：US10403898B2

公开(公告)日：2019-09-03

申请号：US15661266

申请日：2017-07-27

Applicant: LS Mtron Ltd.

Inventor： Seung Min Kim ,  Jeong Gil Lee ,  Shan Hua Jin

IPC: H01M4/66 ,  C25D3/38 ,  C25D5/08 ,  C25D7/06 ,  C25D1/04 ,  H01M10/0525

Abstract: A high strength electrolytic copper foil preventing generation of folds, wrinkles, pleats, and breaks during a roll-to-roll (RTR) process, a method of manufacturing the same, and an electrode and a secondary battery which allow high productivity to be secured by being manufactured with such an electrolytic copper foil. The electrolytic copper foil includes a copper film including 99 weight % or more of copper and a protective layer on the copper film, wherein the electrolytic copper foil has a tensile strength of 45 to 65 kgf/mm2.