公开(公告)号：US12237512B2

公开(公告)日：2025-02-25

申请号：US17608073

申请日：2020-12-22

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yo Han Kwon ,  Joonwon Lim ,  Min Chul Jang ,  Sun Kyu Kim

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M4/48

Abstract: Disclosed is a binder composition for a negative electrode which includes a binder polymer containing at least one first functional group selected from the group consisting of a hydroxy group and a carboxyl group, and a crosslinked polymer containing at least one second functional group selected from the group consisting of an amino group and an isocyanate group, wherein the crosslinked polymer is present in an amount of 1.5 parts by weight to 8.5 parts by weight based on 100 parts by weight of the binder polymer.

公开(公告)号：US12199288B2

公开(公告)日：2025-01-14

申请号：US17430804

申请日：2020-11-04

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yo Han Kwon ,  Il Hong Kim ,  Min Chul Jang

IPC: H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M4/66 ,  H01M4/74 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/531 ,  H01M4/02

Abstract: The present invention relates to an anode including multiple current collectors juxtaposed in parallel, and a secondary battery comprising same, wherein the anode enables providing a high-capacity secondary battery while suppressing volume changes due to a silicone component-containing active material employed therein.

公开(公告)号：US20240194872A1

公开(公告)日：2024-06-13

申请号：US18287966

申请日：2022-12-23

Applicant: LG Energy Solution, Ltd.

Inventor： O Jong Kwon ,  Jung Hun Choi ,  Ju Ryoun Kim ,  Yong Hee Kang ,  Ji Eun Kim ,  Min Chul Jang ,  Ki Woong Kim ,  In Gu An ,  Jeong Geun Jo

IPC: H01M4/58 ,  C01G49/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/5825 ,  C01G49/009 ,  H01M4/131 ,  H01M4/62 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode includes a positive electrode active material layer, and the positive electrode active material layer includes a first lithium iron phosphate and a second lithium iron phosphate as a positive electrode active material, the first lithium iron phosphate has an average particle diameter D50 grater than that of the second lithium iron phosphate and at least one facet, and when the cross section of the positive electrode is observed with a scanning electron microscope (SEM), the cross section of the first lithium iron phosphate has at least one side having a length of 2 μm or more.

公开(公告)号：US20220363561A1

公开(公告)日：2022-11-17

申请号：US17773983

申请日：2020-11-12

Applicant: LG Energy Solution, Ltd.

Inventor： Sung Chul Lim ,  Min Chul Jang ,  Il Hong Kim ,  In Sung Uhm ,  Byoung Hyo Jung

IPC: C01G53/00

Abstract: A positive electrode active material includes a lithium transition metal oxide having a spinel crystal structure, and a coating layer positioned on the surface of the lithium transition metal oxide, wherein the coating layer has an orthorhombic structure, and includes an oxide represented by Formula 1. A method for producing the positive electrode active material, a positive electrode including the positive electrode active material, and a lithium secondary battery, the positive electrode active material.

公开(公告)号：US20240380003A1

公开(公告)日：2024-11-14

申请号：US18289459

申请日：2022-08-19

Applicant: LG Energy Solution, Ltd.

Inventor： Yong Hee Kang ,  Min Chul Jang ,  O Jong Kwon ,  Jung Hun Choi ,  Hee Chang Youn

IPC: H01M10/0565 ,  H01M4/02 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/42

Abstract: A lithium secondary battery including: a gel polymer electrolyte which is a polymerization reaction product of a composition containing a lithium salt, an organic solvent, an oligomer, a lithium salt-based additive, and a polymerization initiator; a positive electrode containing a lithium iron phosphate-based composite oxide; a negative electrode containing a negative electrode active material; and a separator disposed between the positive electrode and the negative electrode, wherein the oligomer is a polyvinylidene fluoride-based polymer containing a vinyl group or an acrylate group at the end thereof, the lithium salt-based additive is at least one selected from the group consisting of lithium difluoro oxalato borate, lithium tetrafluoro borate, lithium 2-trifluoromethyl-4,5-dicyanoimidazolide, and lithium difluorophosphate, and the lithium salt is different from the lithium salt-based additive.

公开(公告)号：US20230207810A1

公开(公告)日：2023-06-29

申请号：US18086247

申请日：2022-12-21

Applicant: LG Energy Solution, Ltd.

Inventor： O Jong Kwon ,  Ju Ryoun Kim ,  Jung Hun Choi ,  Min Chul Jang ,  Ki Woong Kim

IPC: H01M4/583 ,  H01M4/36 ,  H01M4/62 ,  H01M50/46 ,  H01M10/052

CPC classification number: H01M4/583 ,  H01M4/366 ,  H01M4/623 ,  H01M50/46 ,  H01M10/052 ,  H01M2004/021

Abstract: A positive electrode slurry composition includes a positive electrode active material, a binder, a dispersant, and a solvent, wherein the positive electrode active material includes lithium iron phosphate including a carbon coating layer on the surface thereof, and the binder includes polyvinylidene fluoride satisfying the following Expression 1


0≤{(2A+B)/(C+D)}×100

公开(公告)号：US20230021284A1

公开(公告)日：2023-01-19

申请号：US17783377

申请日：2021-09-16

Applicant: LG Energy Solution, Ltd.

Inventor： Sung Chul Lim ,  Young Cheol Choi ,  Min Chul Jang ,  Cheol Hee Park ,  Yo Han Kwon ,  Il Hong Kim ,  Joon Kyo Seo

IPC: H01M10/44 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1393

Abstract: An activation method for a lithium secondary battery, and a lithium secondary battery manufactured using the same are disclosed herein. In some embodiments, the method comprises charging a secondary battery, wherein the secondary battery includes a positive electrode having a sacrificial positive electrode material represented by Formula 1 and having an orthorhombic structure, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte solution, and then holding the secondary battery for a predetermined period of time at a voltage of 3.2 V or greater.

公开(公告)号：US20230207798A1

公开(公告)日：2023-06-29

申请号：US18069602

申请日：2022-12-21

Applicant: LG Energy Solution, Ltd.

Inventor： O Jong Kwon ,  Jung Hun Choi ,  Ju Ryoun Kim ,  Min Chul Jang ,  Ki Woong Kim ,  In Gu An ,  Young Hee Kang ,  Ji Eun Kim ,  Jeong Geun Jo

IPC: H01M4/525 ,  H01M10/052 ,  H01M4/04

CPC classification number: H01M4/525 ,  H01M10/052 ,  H01M4/0404 ,  H01M2004/028

Abstract: A positive electrode slurry composition includes a positive electrode active material, a conductive material, a binder, a dispersant, and a solvent, wherein the positive electrode active material includes lithium iron phosphate, the lithium iron phosphate has an average particle diameter D50 of 1.5 μm or more, and the dispersant is included in an amount of 0.2 parts by weight to 0.9 parts by weight with respect to 100 parts by weight of solids in the positive electrode slurry composition.

公开(公告)号：US20220393156A1

公开(公告)日：2022-12-08

申请号：US17774070

申请日：2020-11-11

Applicant: LG Energy Solution, Ltd.

Inventor： Sung Chul Lim ,  Min Chul Jang ,  In Sung Uhm

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/134 ,  H01M10/0525

Abstract: An irreversible additive includes an oxide having a trigonal crystal structure and represented by Formula 1, and a coating layer positioned on a surface of the oxide and including a compound represented by Formula 2. A positive electrode material including the irreversible additive and a lithium secondary battery including the positive electrode material including the irreversible additive are also provided.