公开(公告)号：US20190131617A1

公开(公告)日：2019-05-02

申请号：US16235312

申请日：2018-12-28

Applicant: LG CHEM, LTD. ,  POSTECH ACADEMY-INDUSTRY FOUNDATION

Inventor： Kyoung Ho AHN ,  Byoung Woo KANG ,  Chul Haeng LEE ,  Solji PARK ,  Min Kyu KIM ,  Won Tae LEE

IPC: H01M4/134 ,  H01M10/052 ,  H01M4/38 ,  H01M4/36 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0568 ,  H01M4/04 ,  H01M4/1395

Abstract: A negative electrode for a lithium metal battery, a method for manufacturing the same, and a lithium metal battery having the same. Formation of lithium dendrite may be prevented by forming a dielectric layer on the surface of lithium metal, and thus improve lifespan characteristics and electrochemical performance when applied to a lithium metal battery.

公开(公告)号：US20210218058A1

公开(公告)日：2021-07-15

申请号：US17056662

申请日：2019-09-10

Applicant: LG CHEM, LTD.

Inventor： Kyoung Ho AHN ,  Jung Hoon LEE ,  Won Kyung SHIN ,  Jae Won LEE ,  Sol Ji PARK ,  Chul Haeng LEE

IPC: H01M10/0565

Abstract: The present invention relates to a thermosetting electrolyte composition for a lithium secondary battery, a gel polymer electrolyte prepared therefrom, and a lithium secondary battery including the gel polymer electrolyte, and particularly, to a thermosetting electrolyte composition for a lithium secondary battery, which includes LiPF6 as a first lithium salt, a second lithium salt excluding the LiPF6, a non-aqueous organic solvent, and a polymer or oligomer containing a unit represented by Formula 1, a gel polymer electrolyte prepared therefrom, and a lithium secondary battery including the gel polymer electrolyte.

公开(公告)号：US20210167392A1

公开(公告)日：2021-06-03

申请号：US16770931

申请日：2019-04-01

Applicant: LG CHEM, LTD.

Inventor： Won Kyung SHIN ,  Kyoung Ho AHN ,  Chul Haeng LEE ,  Jae Won LEE

IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/058 ,  H01M50/449

Abstract: The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode, a separator, which includes a coating layer including an organic binder and inorganic particles, and a gel polymer electrolyte formed by polymerization of an oligomer, wherein the organic binder and the gel polymer electrolyte are bonded by an epoxy ring-opening reaction, and a method of preparing the same.

公开(公告)号：US20190051937A1

公开(公告)日：2019-02-14

申请号：US15759704

申请日：2017-03-30

Applicant: LG CHEM, LTD.

Inventor： Kyoung Ho AHN ,  Jung Hoon LEE ,  Chul Haeng LEE ,  Jeong Woo OH ,  Yi Jin JUNG ,  Sol Ji PARK

IPC: H01M10/0565 ,  H01M10/0525 ,  C08G61/02 ,  C08L33/12 ,  C08L33/20 ,  C08L33/14 ,  C08L75/04

Abstract: The present invention relates to a composition for a gel polymer electrolyte and a gel polymer electrolyte prepared using the same, and specifically provides a composition for a gel polymer electrolyte including a lithium salt, an organic solvent, and a polymer A having an epoxy group represented by Formula 1, and a polymer B having an amine group and a cyanide group represented by Formula 2, wherein the polymers A and B are included in an amount of 1 to 20 wt % based on the total weight of the composition for a gel polymer electrolyte, and wherein a gel polymer electrolyte for a secondary battery can be prepared that includes a polymer network formed by combining the polymer A having an epoxy group represented by Formula 1 and the polymer B having an amine group and a cyanide group represented by Formula 2 in a three-dimensional structure.

公开(公告)号：US20170294682A1

公开(公告)日：2017-10-12

申请号：US15516106

申请日：2015-10-01

Applicant: LG Chem, Ltd.

Inventor： Kyoung Ho AHN ,  Sol Ji PARK ,  Chul Haeng LEE ,  Jeong Woo OH

IPC: H01M10/0567 ,  C07C265/02 ,  C07C265/12 ,  H01M10/0525 ,  C07C265/10

CPC classification number: H01M10/0567 ,  C07C265/02 ,  C07C265/10 ,  C07C265/12 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569

Abstract: The present disclosure provides a non-aqueous liquid electrolyte comprising a non-aqueous organic solvent, a lithium salt, and an additive that is an isocyanate-based compound comprising a carbon-carbon triple bond.By comprising the isocyanate-based compound additive comprising a carbon-carbon triple bond of the present disclosure in the non-aqueous liquid electrolyte, lifespan properties and high temperature durability are capable of being enhanced, and internal resistance of a battery is capable of being reduced.

公开(公告)号：US20210359342A1

公开(公告)日：2021-11-18

申请号：US17272581

申请日：2019-09-20

Applicant: LG CHEM, LTD.

Inventor： Sol Ji PARK ,  Kyoung Ho AHN ,  Jun Hyeok HAN ,  Chul Haeng LEE

IPC: H01M10/0565 ,  H01M10/0525 ,  H01M4/134 ,  C08G77/442

Abstract: The present invention relates to a composition for a gel polymer electrolyte and a lithium secondary battery including a gel polymer electrolyte formed therefrom, and particularly, to a composition for a gel polymer electrolyte, which includes a lithium salt, a non-aqueous organic solvent including a glyme-based solvent, an oligomer represented by Formula 1 and having a polymerizable substituent, and a polymerization initiator, and a lithium secondary battery including a gel polymer electrolyte prepared by polymerization of the composition.

公开(公告)号：US20210184299A1

公开(公告)日：2021-06-17

申请号：US16770777

申请日：2019-03-08

Applicant: LG CHEM, LTD.

Inventor： Won Kyung SHIN ,  Kyoung Ho AHN ,  Chul Haeng LEE ,  Jeong Woo OH

IPC: H01M50/129 ,  H01M50/121 ,  H01M50/119 ,  H01M50/105 ,  H01M10/0565 ,  H01M10/0525 ,  C08L77/06 ,  C08L67/02 ,  C08L23/12 ,  C08G64/02

Abstract: The present invention relates to a pouch exterior material which is for a lithium secondary battery and includes an inner layer, an outer resin layer, and a metal layer located between the inner layer and the outer resin layer, wherein the inner layer contains an ethylenically unsaturated group, and a lithium secondary battery including the pouch exterior material.

公开(公告)号：US20210175583A1

公开(公告)日：2021-06-10

申请号：US16768468

申请日：2019-01-17

Applicant: LG CHEM, LTD.

Inventor： Won Kyung SHIN ,  Kyoung Ho AHN ,  Chul Haeng LEE

IPC: H01M50/451 ,  H01M50/414 ,  H01M50/446 ,  H01M50/403 ,  H01M10/0525 ,  H01M10/0565 ,  C09D127/16 ,  C08F220/20

Abstract: The present invention relates to a separator for a lithium secondary battery including a substrate, a first coating layer including a first organic binder containing an ethylenically unsaturated group, and a second coating layer including a second organic binder and inorganic particles, a method for preparing the same, and a lithium secondary battery including the separator for a lithium secondary battery.

公开(公告)号：US20210104802A1

公开(公告)日：2021-04-08

申请号：US17044370

申请日：2019-04-29

Applicant: LG CHEM, LTD.

Inventor： Won Kyung SHIN ,  Kyoung Ho AHN ,  Chul Haeng LEE

IPC: H01M50/446 ,  H01M10/0525 ,  H01M10/0565 ,  H01M4/62

Abstract: The present invention provides a separation membrane for a lithium secondary battery and a lithium secondary battery including the same, the separation membrane including: a substrate; a first coating layer containing a first organic binder which is able to be bonded to a gel polymer electrolyte through an epoxy ring-opening reaction; and a second coating layer containing a second organic binder, wherein the first organic binder has a functional group capable of ring-opening reaction with an epoxy group, or a combination thereof, and the gel polymer electrolyte is formed by polymerizing an oligomer having an epoxy group, a functional group capable of ring-opening reaction with an epoxy group, or a combination thereof.

公开(公告)号：US20210005859A1

公开(公告)日：2021-01-07

申请号：US16976859

申请日：2019-04-17

Applicant: LG CHEM, LTD.

Inventor： Kyoung Ho AHN ,  Kwan Woo NAM ,  Chul Haeng LEE ,  Young Duk KIM ,  Je An LEE

IPC: H01M2/16 ,  C08K3/22

Abstract: Disclosed herein is a porous separator for electrochemical devices, configured to guarantee electrical insulation between a positive electrode and a negative electrode, wherein the porous separator includes no polyolefin substrate, and includes inorganic particles, a binder for coupling between the inorganic particles, and a crosslinking agent.