公开(公告)号：US20250132463A1

公开(公告)日：2025-04-24

申请号：US18687015

申请日：2023-05-19

Applicant: LG Chem, Ltd.

Inventor： Kyoungsoo Lee ,  Ingyoung Yu ,  Sun Mi Jin

IPC: H01M50/491 ,  H01M4/02 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/056 ,  H01M50/403 ,  H01M50/426 ,  H01M50/434 ,  H01M50/446 ,  H01M50/449

Abstract: An electrode for a lithium secondary battery includes an electrode substrate with a first porous layer formed on the electrode substrate and a second porous layer formed on the first porous layer. The first porous layer has a porosity of 10% or less; and the second porous layer formed on the first porous layer has a porosity of 30% or more. The second porous layer contains a binder resin and inorganic fine particles. The manufacturing method of the same and a lithium secondary battery including the same is also provided.

公开(公告)号：US11495824B2

公开(公告)日：2022-11-08

申请号：US16643819

申请日：2018-10-08

Applicant: LG CHEM, LTD.

Inventor： Kihyun Kim ,  Dongseok Shin ,  Doo Kyung Yang ,  Sun Mi Jin ,  Intae Park

IPC: H01M10/052 ,  H01M4/58 ,  H01M4/60 ,  H01M10/0567 ,  H01M4/40

Abstract: An electrolyte for a lithium metal battery and a lithium metal battery including the same, more specifically an electrolyte for a lithium metal battery including a lithium salt, an organic solvent and an additive, wherein the additive includes a functional group that binds to lithium metal at one end thereof and a fluorinated hydrocarbon group at the other end. The electrolyte for the lithium metal battery includes an additive including particular functional groups to improve the stability of the lithium metal and suppress the side reaction at the surface, thereby enabling the lithium metal battery to have high capacity, high stability, and long life.

公开(公告)号：US20250096424A1

公开(公告)日：2025-03-20

申请号：US18729638

申请日：2023-09-15

Applicant: LG Chem, Ltd.

Inventor： Su Jun Kim ,  Jeongsoo Park ,  Sun Mi Jin ,  Hana Lee ,  Ingyoung Yu

IPC: H01M50/483 ,  H01M10/0525 ,  H01M50/477 ,  H01M50/486 ,  H01M50/491

Abstract: An electrode for a lithium rechargeable battery includes an electrode substrate and a porous layer formed on the electrode substrate. The porous layer includes a binder resin and inorganic fine particles. The inorganic fine particles include boehmite and barium sulfate. A lithium rechargeable battery comprising the electrode is also provided.

公开(公告)号：US20240322258A1

公开(公告)日：2024-09-26

申请号：US18578976

申请日：2023-05-19

Applicant: LG Chem, Ltd.

Inventor： Su Hee Lee ,  Sun Mi Jin ,  Tae Sun You

IPC: H01M10/42 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/46 ,  H01M50/491 ,  H01M50/586 ,  H01M50/59

CPC classification number: H01M10/4235 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/46 ,  H01M50/491 ,  H01M50/586 ,  H01M50/59

Abstract: The present invention relates to an electrode for a lithium secondary battery comprising: an electrode portion that includes a current collector, an electrode layer formed on the current collector, and an insulating layer formed on the electrode layer, and further comprising: a coating member that includes a first coating region in contact with a side surface of the electrode portion and a second coating region that continues to the first coating region and makes contact with a portion of the insulating layer, and a lithium secondary battery including the same.

公开(公告)号：US11545720B2

公开(公告)日：2023-01-03

申请号：US16624750

申请日：2018-05-04

Applicant: LG CHEM, LTD.

Inventor： Kihyun Kim ,  Soohyun Kim ,  Doo Kyung Yang ,  Sun Mi Jin ,  Changhoon Lee

IPC: H01M50/446 ,  H01M50/403 ,  H01M50/46 ,  H01M10/052 ,  H01M10/058

Abstract: A lithium-sulfur battery comprising a separator in which an adsorption layer including a radical compound having a nitroxyl radical site is formed, and in particular, to a lithium-sulfur battery suppressing elution of lithium polysulfide by using an adsorption layer including a radical compound having a nitroxyl radical site and optionally a conductive material on at least one surface of a separator. In the lithium-sulfur battery, elution and diffusion may be prevented by a radical compound having a nitroxyl radical site, a stable radical compound, adsorbing lithium polysulfide eluted from positive electrode, and in addition thereto, electrical conductivity is further provided to provide a reaction site of a positive electrode active material, and as a result, battery capacity and lifetime properties are enhanced.

公开(公告)号：US10804559B2

公开(公告)日：2020-10-13

申请号：US15779275

申请日：2016-12-19

Applicant: LG CHEM, LTD.

Inventor： Kun Seok Lee ,  Jungyeon Lee ,  Seung Heon Lee ,  Sun Mi Jin ,  Hyejin Kwon

IPC: H01M10/04 ,  H01M2/16 ,  H01M10/0525 ,  H01M2/14

Abstract: The present application relates to a separator and a battery comprising the same. A separator according to an exemplary embodiment of the present application includes: a porous substrate; and a first bonding layer pattern provided on at least one surface of the porous substrate, in which each pattern constituting the first bonding layer pattern is a pattern including a second bonding layer pattern having an aperture ratio of 5% or more and 40% or less.