公开(公告)号：US12027670B2

公开(公告)日：2024-07-02

申请号：US16965441

申请日：2019-09-27

Applicant: LG Chem, Ltd.

Inventor： Jeong Woo Oh ,  Chul Haeng Lee ,  Hyung Tae Kim

IPC: H01M10/0569 ,  C01D15/00 ,  C08G71/04 ,  H01M4/131 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  C01D15/005 ,  C08G71/04 ,  H01M4/131 ,  H01M4/623 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2300/0037 ,  H01M2300/0051

Abstract: A non-aqueous electrolyte solution and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte solution includes a lithium salt, a first organic solvent that is ethylene carbonate, a second organic solvent excluding ethylene carbonate, and an oligomer represented by Formula 1 wherein a concentration of the lithium salt is 1.2 M to 3.3 M, and, wherein the first organic solvent is included in an amount of 0.1 wt % to 12 wt % based on a total weight of the non-aqueous electrolyte solution.

公开(公告)号：US11978854B2

公开(公告)日：2024-05-07

申请号：US17281367

申请日：2019-10-04

Applicant: LG CHEM, LTD.

Inventor： Kyoung Ho Ahn ,  Sol Ji Park ,  Jun Hyeok Han ,  Chul Haeng Lee ,  Jung Hoon Lee

IPC: H01M10/0565 ,  C08F22/22 ,  H01M10/0525 ,  H01M10/0568

CPC classification number: H01M10/0565 ,  C08F22/22 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2300/0091

Abstract: The present invention relates to a composition for a polymer electrolyte which includes a polymerizable oligomer capable of forming an excellent crosslink during a polymerization reaction. Also, the present invention relates to a polymer electrolyte, which may ensure high oxidation stability and ionic conductivity by using the composition for a polymer electrolyte, and a lithium secondary battery including the same.

公开(公告)号：US11894516B2

公开(公告)日：2024-02-06

申请号：US17056317

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 ,  H01M10/0525 ,  H01M10/0569

CPC classification number: H01M10/0565 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0082 ,  H01M2300/0085

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：US11658299B2

公开(公告)日：2023-05-23

申请号：US16956263

申请日：2019-05-10

Applicant: LG Chem, Ltd.

Inventor： Won Kyung Shin ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jeong Woo Oh ,  Min Jung Kim

IPC: H01M4/525 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M4/02

CPC classification number: H01M4/525 ,  H01M4/364 ,  H01M4/386 ,  H01M4/483 ,  H01M4/485 ,  H01M4/505 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0028

Abstract: A lithium secondary battery is disclosed herein. In some embodiments, a lithium battery includes a positive electrode having a lithium-nickel-cobalt-manganese-based electrode active material wherein nickel has a content of 80 mol % or greater, relative to the other transition metals, a negative electrode including a silicon-based negative electrode active material, a separator, and a non-aqueous electrolyte solution including a non-aqueous organic solvent and a lithium salt, the lithium salt being contained in a concentration of 1.8 M to 5 M, and wherein the lithium salt includes LiPF6 and a lithium bis(fluorosulfonyl)imide.

公开(公告)号：US11646442B2

公开(公告)日：2023-05-09

申请号：US16955211

申请日：2019-04-19

Applicant: LG Chem, Ltd.

Inventor： Sol Ji Park ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jun Hyeok Han

IPC: H01M10/056 ,  C08K3/22 ,  H01M10/0525

CPC classification number: H01M10/056 ,  C08K3/22 ,  H01M10/0525 ,  C08K2003/2206 ,  C08K2003/2237 ,  C08K2201/001 ,  H01M2300/0068 ,  H01M2300/0082 ,  H01M2300/0085 ,  H01M2300/0091

Abstract: The present invention provides an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, the electrolyte including a polymer, and one or more selected from the group consisting of an inorganic solid electrolyte particle and a ferrodielectric, wherein the polymer includes one or more selected from the group consisting of a polymer represented by Formula 1 and a polymer including a repeating unit represented by Formula 2.

公开(公告)号：US11581577B2

公开(公告)日：2023-02-14

申请号：US16638612

申请日：2018-11-30

Applicant: LG Chem, Ltd.

Inventor： Jung Hoon Lee ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jeong Woo Oh

IPC: H01M10/0565 ,  C08G69/02 ,  C08K5/524 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention provides a composition for a gel polymer electrolyte, the composition including: an oligomer represented by Formula 1; an additive; a polymerization initiator; a lithium salt; and a non-aqueous solvent, the additive including at least one compound selected from the group consisting of a substituted or unsubstituted phosphate-based compound and a substituted or unsubstituted benzene-based compound, a gel polymer electrolyte prepared using the same, and a lithium secondary battery.

公开(公告)号：US11482728B2

公开(公告)日：2022-10-25

申请号：US16610758

申请日：2018-11-23

Applicant: LG Chem, Ltd.

Inventor： Hyun Yeong Lee ,  Chul Haeng Lee ,  Sung Hoon Yu ,  Hyun Seung Kim

IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568

Abstract: A non-aqueous electrolyte solution for a lithium secondary battery, and a lithium second battery including the same are disclosed herein. In some embodiments, the lithium electrolyte includes lithium bis(fluorosulfonyl)imide as a first lithium salt, a second lithium salt, an organic solvent, and a compound represented by Formula 1. In some embodiments, the lithium second battery includes a positive electrode having a positive electrode active material represented by Formula 2.

公开(公告)号：US11411248B2

公开(公告)日：2022-08-09

申请号：US16607206

申请日：2018-11-13

Applicant: LG Chem, Ltd.

Inventor： Jeong Woo Oh ,  Kyoung Ho Ahn ,  Chul Haeng Lee

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

Abstract: The present invention relates to a composition for a gel polymer electrolyte, which includes an oligomer represented by Formula 1, an anion stabilizing additive, a polymerization initiator, a lithium salt, and a non-aqueous solvent, wherein the anion stabilizing additive includes at least one selected from the group consisting of a phosphite-based compound represented by Formula 2 and a boron-based compound represented by Formula 3, and a gel polymer electrolyte and a lithium secondary battery which are prepared by using the same.

公开(公告)号：US11342585B2

公开(公告)日：2022-05-24

申请号：US16762064

申请日：2018-11-30

Applicant: LG CHEM, LTD.

Inventor： Won Kyung Shin ,  Kyoung Ho Ahn ,  Chul Haeng Lee ,  Jung Hoon Lee

IPC: H01M10/0565 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052

Abstract: The present invention relates to a gel polymer electrolyte composition for a lithium secondary battery, a gel polymer electrolyte prepared by polymerizing the same, and a secondary battery including the gel polymer electrolyte, and particularly, to a gel polymer electrolyte composition for a lithium secondary battery, which includes a lithium salt, a non-aqueous organic solvent, an ionic liquid, an oligomer having a specific structure, a flame retardant, and a polymerization initiator, a gel polymer electrolyte formed by polymerizing the gel polymer electrolyte composition in an inert atmosphere, and a lithium secondary battery in which flame retardancy and high-temperature stability are improved by including the gel polymer electrolyte.

公开(公告)号：US11183711B2

公开(公告)日：2021-11-23

申请号：US16606852

申请日：2018-09-20

Applicant: LG Chem, Ltd.

Inventor： Sung Hoon Yu ,  Chul Haeng Lee ,  Hyun Seung Kim

IPC: H01M10/0567 ,  H01M10/052 ,  H01M10/0525

Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In an embodiment, the electrolyte solution includes a lithium salt, an organic solvent, a compound represented by Formula 1 as a first additive, lithium difluorophosphate (LiDFP) as a second additive, wherein the first additive and the second additive are each independently included in an amount of 0.01 wt % to 8.5 wt % based on a total amount of the non-aqueous electrolyte solution. The first additive has metal ion adsorbability and is capable of forming a stable ion conductive film on the surface of an electrode, and a lithium secondary battery in which an abnormal voltage drop phenomenon is improved by including the same.