公开(公告)号：US11482758B2

公开(公告)日：2022-10-25

申请号：US16634696

申请日：2018-12-24

Applicant: LG CHEM, LTD.

Inventor： Da Kyung Han ,  Seung Hyun Lee ,  Dong Wook Sung ,  Je An Lee

IPC: H01M50/446 ,  H01M10/0525 ,  H01M50/46 ,  H01M50/403 ,  H01M50/40 ,  H01M50/409 ,  H01M50/449

Abstract: A separator for secondary batteries that allows the amount of a dispersing resin that is used and the amount of a dispersant that is used to be reduced in order to prevent an increase in resistance after the separator is coated, which occurs in the case in which a large amount of the dispersing resin is used in order to disperse inorganic matter, and an electrochemical device having the same applied thereto. The amount of a dispersing resin is reduced, whereby it is possible to prevent an increase in resistance after a porous separator is coated, a dispersing resin having a specific weight average molecular weight is mixed, whereby physical properties and dispersivity are improved, and the use of an expensive dispersant is excluded, whereby processing costs are reduced.

公开(公告)号：US11594782B2

公开(公告)日：2023-02-28

申请号：US16759944

申请日：2019-05-08

Applicant: LG CHEM, LTD.

Inventor： Da Kyung Han ,  Kwan Woo Nam ,  Seung Hyun Lee ,  Je An Lee

IPC: H01M50/431 ,  H01M4/62 ,  H01M50/446 ,  H01M50/46

Abstract: A flame retardant separator for secondary batteries, and more particularly, a flame retardant separator for secondary batteries comprising or coated with a metal hydroxide having a low Gibbs free energy among polymorphs of a metal hydroxide used as an inorganic flame retardant.

公开(公告)号：US11539099B2

公开(公告)日：2022-12-27

申请号：US16765253

申请日：2018-12-05

Applicant: LG CHEM, LTD.

Inventor： Gye Min Kwon ,  Houng Sik Yoo ,  Hyeon Choi ,  Da Kyung Han ,  Je An Lee

IPC: H01M10/0525 ,  H01M50/409 ,  H01M10/0562 ,  H01M50/403 ,  H01M4/02

Abstract: A slurry composition for coating a secondary battery separator, a separator prepared using the same, and a secondary battery including the separator, wherein the slurry composition includes a phenolic compound including two or more aromatic rings, inorganic particles, a binder, and a solvent.