公开(公告)号：US20240006613A1

公开(公告)日：2024-01-04

申请号：US18035039

申请日：2022-07-27

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yonghwi KIM ,  Changhoon LEE

IPC: H01M4/60 ,  C08G73/06 ,  C08J9/26 ,  H01M10/052

CPC classification number: H01M4/608 ,  C08G73/0644 ,  C08G73/0661 ,  C08J9/26 ,  H01M2004/028 ,  C08J2379/04 ,  C08J2201/0444 ,  C08J2205/042 ,  H01M10/052

Abstract: A porous solid compound having high porosity is prepared by controlling the reaction conditions of a compound containing a cyano group and a halogenated metal compound. The porous solid compound includes one or more heterocycles formed by alternately bonding triazine and phenyl or biphenyl wherein the pore volume of the porous solid compound is 5 cm3/g or more.

公开(公告)号：US20230335718A1

公开(公告)日：2023-10-19

申请号：US18028720

申请日：2022-01-07

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Ilto KIM ,  Changhoon LEE

IPC: H01M4/133 ,  H01M4/587 ,  C09C1/56 ,  H01M10/052 ,  H01M4/38 ,  H01M4/36

CPC classification number: H01M4/366 ,  C09C1/56 ,  H01M4/133 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052 ,  H01M2004/028

Abstract: A sulfur-carbon composite includes a porous carbon material. and sulfur on at least a portion of inside and a surface of the porous carbon material. The sulfur-carbon composite is prepared by heat treating a porous carbon material under an inert gas atmosphere, and by mixing the heat-treated porous carbon material with sulfur.

公开(公告)号：US20240178438A1

公开(公告)日：2024-05-30

申请号：US18281768

申请日：2022-12-09

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Seonghyo PARK ,  Changhoon LEE ,  Intae PARK ,  Ran CHOI ,  Hyunsoo LEE ,  Yonghwi KIM ,  Myeongjun SONG

IPC: H01M10/0525 ,  H01M4/02 ,  H01M4/36 ,  H01M4/583 ,  H01M10/0568 ,  H01M10/0569

CPC classification number: H01M10/0525 ,  H01M4/364 ,  H01M4/583 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0034

Abstract: A lithium-sulfur battery with improved lifetime performance is provided. The lithium-sulfur battery comprises an electrolyte including a first solvent containing fluorine-based ether compounds, a second solvent containing a glyme-based compound, and a lithium salt containing lithium bis (pentafluoroethanesulfonyl) imide; and a positive electrode including an active material containing sulfur and carbon material, and can utilize 80% or more of the theory discharging capacity of sulfur and can operate for a long life, by using an electrolyte system of SSE excluding nitrile solvents and at the same time applying a carbon material with a high specific surface area to the positive electrode.

公开(公告)号：US20240178369A1

公开(公告)日：2024-05-30

申请号：US18283777

申请日：2022-10-27

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Hyunah CHO ,  Jeehyun AHN ,  Changhoon LEE

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/58 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052 ,  H01M50/105

CPC classification number: H01M4/364 ,  H01M4/5815 ,  H01M4/587 ,  H01M4/622 ,  H01M10/052 ,  H01M50/105 ,  H01M2004/028

Abstract: A positive electrode for a lithium secondary battery and a lithium secondary battery including the same are provided. The positive electrode comprises a positive electrode active material layer including a sulfur-carbon composite which is a positive electrode active material, a binder, and a metal oxide-based additive, and provides improved discharging capacity and lifetime characteristics of the lithium secondary battery.

公开(公告)号：US20230317963A1

公开(公告)日：2023-10-05

申请号：US18024230

申请日：2022-07-08

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Da Young KANG ,  Seungbo YANG ,  Changhoon LEE ,  Myeongjun SONG

IPC: H01M4/66 ,  H01M4/58 ,  H01M4/62 ,  H01M4/1393

CPC classification number: H01M4/667 ,  H01M4/5815 ,  H01M4/625 ,  H01M4/1393 ,  H01M2004/028

Abstract: The present disclosure relates to a positive electrode for a lithium-sulfur battery, comprising a sulfur-carbon composite having a plurality of island-shaped carbon coating layers on its surface, and a lithium-sulfur battery including the same. The positive electrode for a lithium-sulfur battery according to the present disclosure has an excellent electrochemical reactivity, which allows the lithium-sulfur battery including the same to have high capacity, high output and long cycle life.

公开(公告)号：US20230198023A1

公开(公告)日：2023-06-22

申请号：US17918318

申请日：2021-10-21

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Intae PARK ,  Yonghwi KIM ,  Changhun PARK ,  Changhoon LEE

IPC: H01M10/0569 ,  H01M10/052 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M10/052 ,  H01M10/0568 ,  H01M2004/028

Abstract: A lithium-sulfur secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte. The electrolyte contains a borate-based lithium salt, and the borate-based lithium salt is lithium difluoro(oxalato)borate, lithium bis(oxalate)borate, or a combination thereof. The borate-based lithium salt is contained in the electrolyte in an amount exceeding 0 ppm and less than 1,000 ppm based on the total weight of the electrolyte. The cycle performance of the lithium-sulfur secondary battery is improved because the lithium-sulfur secondary battery contains specific borate-based lithium salt in the electrolyte.

公开(公告)号：US20230140648A1

公开(公告)日：2023-05-04

申请号：US17918551

申请日：2021-11-22

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Myeongjun SONG ,  Changhoon LEE ,  Seonghyo PARK

IPC: H01M10/0569 ,  H01M50/46 ,  H01M10/0568 ,  H01M10/0525

Abstract: The present disclosure relates to an electrolyte solution for a lithium-sulfur batteries comprising a lithium salt and an organic solvent, wherein the organic solvent comprises a first solvent, a second solvent, and a third solvent, the first solvent comprises a compound represented by Formula 1 or Formula 2 containing a cyano group (—CN); a linear ether containing two or more oxygen atoms; or a cyclic ether, the second solvent comprises a fluorinated ether-based solvent, and the third solvent comprises an ether-based non-solvent represented by Formula 3 below.

公开(公告)号：US20230133857A1

公开(公告)日：2023-05-04

申请号：US17918104

申请日：2021-10-21

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Intae PARK ,  Yonghwi KIM ,  Changhun PARK ,  Changhoon LEE

IPC: H01M10/0569 ,  H01M10/0567 ,  H01M10/052 ,  H01M4/36 ,  H01M10/0568 ,  H01M4/583 ,  H01M4/58

Abstract: Provided is a lithium-sulfur secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte. The electrolyte contains a S—O-based cyclic compound, and the S—O-based cyclic compound is ethylene sulfite, 1,3-propane sultone, 1,3-propene sultone, ethylene sulfate, or a combination thereof. The S—O-based cyclic compound is contained in the electrolyte in an amount more than 0 ppm and less than 1,000 ppm based on the total weight of the electrolyte. Since the lithium-sulfur secondary battery contains specific S—O-based cyclic compound in the electrolyte, the cycle performance of the lithium-sulfur secondary battery is improved.

公开(公告)号：US20230058900A1

公开(公告)日：2023-02-23

申请号：US17793630

申请日：2021-10-21

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yochan JEONG ,  Kwonnam SOHN ,  Changhoon LEE

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  C01B32/348 ,  C01B32/318

Abstract: The present disclosure provides a porous carbon material having a core-shell structure, which comprises a core comprising a structure formed by stacking carbon sheets, and a shell comprising carbon surrounding the core, and a preparation method thereof, a sulfur-carbon composite comprising the same, and a lithium secondary battery comprising the same.

公开(公告)号：US20230361300A1

公开(公告)日：2023-11-09

申请号：US18025958

申请日：2022-05-19

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Da Young KANG ,  Changhoon LEE

IPC: H01M4/583 ,  H01M4/36 ,  H01M4/136 ,  H01M10/052

CPC classification number: H01M4/583 ,  H01M4/364 ,  H01M4/136 ,  H01M10/052 ,  H01M2004/028

Abstract: The present disclosure relates to a positive electrode for a lithium-sulfur battery comprising two kinds of sulfur-carbon composite including carbon materials having different shapes and properties as a positive electrode active material, and a lithium-sulfur battery comprising the same. The positive electrode for the lithium-sulfur battery according to the present disclosure exhibits low porosity and excellent surface uniformity to improve the electrochemical reactivity and stability of the positive electrode, thereby maximizing the expression of the capacity of the positive electrode, and thus enabling high capacity, high energy density, and long lifetime of the lithium-sulfur battery.