公开(公告)号：US11482758B2

公开(公告)日：2022-10-25

申请号：US16634696

申请日：2018-12-24

申请人： LG CHEM, LTD.

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

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

摘要： 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

申请人： LG CHEM, LTD.

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

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

摘要： 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：US11757155B2

公开(公告)日：2023-09-12

申请号：US16964178

申请日：2019-08-30

申请人： LG CHEM, LTD.

发明人： Min Ji Kim ,  Kwan Woo Nam ,  Seung Hyun Lee ,  Je An Lee

IPC分类号： H01M50/446 ,  H01M50/46 ,  H01M4/62 ,  H01M50/494 ,  H01M50/497 ,  H01M50/443

CPC分类号： H01M50/446 ,  H01M4/623 ,  H01M50/443 ,  H01M50/461 ,  H01M50/494 ,  H01M50/497

摘要： Disclosed herein is a separator for secondary batteries, configured to provide insulation between a positive electrode and a negative electrode, wherein the separator comprises no polyolefin substrate, is configured to have a layer structure comprising a fibrous support, inorganic particles, and a binder, and has improved dimensional stability.