公开(公告)号：US11417880B2

公开(公告)日：2022-08-16

申请号：US16771039

申请日：2019-06-25

Applicant: LG CHEM, LTD.

Inventor： Suenghoon Han ,  Seongji Ye

IPC: H01M4/52 ,  C01G49/00 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/02

Abstract: A method for preparing an iron oxyhydroxynitrate, a positive electrode for a lithium secondary battery including the iron oxyhydroxynitrate prepared therefrom, and a lithium secondary battery including the same. The positive electrode for the lithium secondary battery containing the iron oxyhydroxynitrate includes the iron oxyhydroxynitrate represented by the following Formula 1: FeO(NO3)x(OH)1-x, wherein 0

公开(公告)号：US12155073B2

公开(公告)日：2024-11-26

申请号：US17259215

申请日：2019-09-18

Applicant: LG CHEM, LTD.

Inventor： Seongji Ye ,  Suenghoon Han

IPC: H01M4/58 ,  C01G49/12 ,  H01M4/02 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0525

Abstract: A method for preparing an iron sulfide (FeS2) with selective and high purity by a simple process, a positive electrode for a lithium secondary battery including the iron sulfide (FeS2) prepared therefrom, which can adsorb the lithium polysulfide produced during the charging and discharging process of the lithium secondary battery, thereby increasing the charging and discharging efficiency of the battery and improving its lifetime characteristics; and a lithium secondary battery provided with the same.

公开(公告)号：US12107296B2

公开(公告)日：2024-10-01

申请号：US17312650

申请日：2020-04-28

Applicant: LG CHEM, LTD.

Inventor： Myeongseong Kim ,  Seongji Ye

IPC: H01M4/00 ,  H01M10/0525 ,  H01M50/431 ,  H01M50/463

CPC classification number: H01M50/431 ,  H01M10/0525 ,  H01M50/463

Abstract: Discussed is a separator for a lithium secondary battery and a lithium secondary battery including the same, more specifically, a separator for a lithium secondary battery including a porous substrate and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a defect-containing molybdenum disulfide. The separator for lithium secondary battery adsorbs lithium polysulfide through the coating layer comprising the defect-containing molybdenum disulfide and suppresses the growth of a lithium dendrite, thereby improving the capacity and lifetime characteristics of the lithium secondary battery.

公开(公告)号：US11942633B2

公开(公告)日：2024-03-26

申请号：US16772981

申请日：2019-06-28

Applicant: LG CHEM, LTD.

Inventor： Suenghoon Han ,  Seongji Ye

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/525 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/621 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode of a lithium secondary battery including an iron oxide as an additive, and a lithium secondary battery including the positive electrode. In the case of a lithium secondary battery including a positive electrode to which iron oxide is applied, the iron oxide adsorbs the lithium polysulfide (LiPS) generated in the charging/discharging process of the lithium secondary battery, thereby exhibiting an effect of increasing the charging/discharging efficiency of the battery and improving the lifetime characteristics.

公开(公告)号：US11735718B2

公开(公告)日：2023-08-22

申请号：US16981028

申请日：2019-08-12

Applicant: LG CHEM, LTD.

Inventor： Seongji Ye ,  Kwonnam Sohn

IPC: H01M4/1397 ,  C01G39/06 ,  H01M4/04 ,  H01M4/136 ,  H01M4/36 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/1397 ,  C01G39/06 ,  H01M4/0471 ,  H01M4/136 ,  H01M4/364 ,  H01M4/583 ,  H01M10/0525 ,  H01M2004/028

Abstract: A method for preparing a carbon nanostructure including molybdenum disulfide is discussed. More particularly, a method is discussed for preparing a carbon nanostructure in which molybdenum disulfide is located on the surface by melt diffusion and heat treatment of a mixture of a molybdenum precursor, a carbon nanostructure, and sulfur. Also, a positive electrode of a lithium secondary battery including a carbon nanostructure including molybdenum disulfide as an additive, and a lithium secondary battery including the same. In the case of the lithium secondary battery including the positive electrode to which the carbon nanostructure including molybdenum disulfide was applied, the carbon nanostructure including the molybdenum disulfide adsorbs lithium polysulfide (LiPS) generated during the charging/discharging process of the lithium secondary battery, thereby increasing the charging/discharging efficiency of the battery and improving lifetime characteristics.