公开(公告)号：US20180219225A1

公开(公告)日：2018-08-02

申请号：US15748289

申请日：2016-10-17

Applicant: LG CHEM, LTD.

Inventor： Jung Hyun CHOI ,  Yong Ju LEE ,  Eun Kyung KIM ,  Hyun Chul KIM

IPC: H01M4/587 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/587 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/622 ,  H01M4/625 ,  H01M10/052 ,  H01M2220/20 ,  Y02E60/122

Abstract: The present invention relates to a negative electrode active material and a secondary battery including the same, and specifically, provides a negative electrode active material particle including a core, which includes a carbon-based active material and an oxygen functional group, and a shell, which surrounds the core and includes a silicon-based active material.

公开(公告)号：US20180151868A1

公开(公告)日：2018-05-31

申请号：US15576992

申请日：2016-09-23

Applicant: LG CHEM, LTD.

Inventor： Hyun Chul KIM ,  Yong Ju LEE ,  Eun Kyung KIM

IPC: H01M4/134 ,  H01M4/583 ,  H01M10/052 ,  H01M4/38 ,  H01M4/48 ,  H01M4/02

CPC classification number: H01M4/134 ,  C01B33/023 ,  H01M4/366 ,  H01M4/382 ,  H01M4/386 ,  H01M4/48 ,  H01M4/483 ,  H01M4/583 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027

Abstract: The present specification relates to a negative electrode active material including an amorphous silicon-based composite represented by SiOa (0

公开(公告)号：US20170133671A1

公开(公告)日：2017-05-11

申请号：US15295330

申请日：2016-10-17

Applicant: LG CHEM, LTD.

Inventor： Jung Hyun CHOI ,  Yong Ju LEE ,  Eun Kyung KIM ,  Su Jin PARK ,  Hyun Chul KIM

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M4/587

CPC classification number: H01M4/366 ,  H01M4/0419 ,  H01M4/13 ,  H01M4/139 ,  H01M4/386 ,  H01M4/587 ,  H01M4/62

Abstract: The present disclosure relates to a negative electrode active material and a secondary battery including the same, and in particular, provides a negative electrode active material particle including a core including a carbon-based active material, and a shell surrounding the core and including a polymer, wherein silicon-based active material particles are embedded in the shell, and at least a part of the silicon-based active material particles are exposed to a surface of the shell.

公开(公告)号：US20170117543A1

公开(公告)日：2017-04-27

申请号：US15333525

申请日：2016-10-25

Applicant: LG CHEM, LTD.

Inventor： Su Jin PARK ,  Yong Ju LEE ,  Eun Kyung KIM ,  Hyun Chul KIM

IPC: H01M4/485 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/587

CPC classification number: H01M4/485 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/20

Abstract: A negative electrode active material particle and a method for preparing the same are provided. The negative electrode active material particle includes SiOx (0

公开(公告)号：US20210257617A1

公开(公告)日：2021-08-19

申请号：US17252431

申请日：2019-10-18

Applicant: LG CHEM, LTD.

Inventor： Il Geun OH ,  Yong Ju LEE ,  Su Min LEE

IPC: H01M4/587 ,  C01B32/984

Abstract: According to an exemplary embodiment of the present disclosure, a negative electrode active material includes metal-silicon-carbon based particles including a MaSibC matrix, wherein M in the MaSibC matrix is one or more selected from the group consisting of Li, Mg, Na, Ca, and Al, 0.3≤a≤1, and 1≤b≤2. Since at the time of charging and discharging a battery, formation of an irreversible phase may be minimized by the MaSibC matrix, initial efficiency of the battery may be improved, and electrical conductivity, physical strength, and chemical stability may be improved, such that capacity and lifecycle characteristics of the battery may be improved.

公开(公告)号：US20210175488A1

公开(公告)日：2021-06-10

申请号：US16762696

申请日：2018-11-09

Applicant: LG CHEM, LTD.

Inventor： Jung Hyun CHOI ,  Yong Ju LEE ,  Eun Kyung KIM ,  Rae Hwan JO ,  Su Min LEE ,  Dong Hyuk KIM ,  Se Mi PARK ,  Il Geun OH

IPC: H01M4/133 ,  H01M4/38 ,  H01M4/131 ,  H01M4/134 ,  H01M4/36

Abstract: The present invention relates to a negative electrode active material including a carbonaceous matrix having a first particle and a second particle, wherein the first particle includes a silicon core, an oxide layer disposed on the silicon core and including SiOx (0

公开(公告)号：US20200350571A1

公开(公告)日：2020-11-05

申请号：US16771350

申请日：2019-02-27

Applicant: LG CHEM, LTD.

Inventor： Su Min LEE ,  Je Young KIM ,  Yong Ju LEE ,  Sun Young SHIN

IPC: H01M4/38 ,  H01M4/587 ,  H01M4/485 ,  H01M4/04

Abstract: The present invention relates to a negative electrode active material including a silicon-based composite and a carbon-based material, wherein the silicon-based composite includes SiOx (0≤x≤2) including pores, a polymer disposed in the pores, and a metal compound disposed on a surface of the SiOx (0≤x≤2) or on the surface and inside of the SiOx (0≤x≤2), wherein the metal compound is a compound including at least one element selected from the group consisting of lithium (Li), magnesium (Mg), calcium (Ca), and aluminum (Al), a method of preparing the same, and a negative electrode and a lithium secondary battery which include the negative electrode active material.

公开(公告)号：US20200266424A1

公开(公告)日：2020-08-20

申请号：US16762432

申请日：2018-11-09

Applicant: LG CHEM, LTD.

Inventor： Jung Hyun CHOI ,  Seung Youn CHOI ,  Eun Kyung KIM ,  Yong Ju LEE ,  Rae Hwan JO ,  Su Min LEE ,  Dong Hyuk KIM ,  Se Mi PARK ,  Il Geun OH

IPC: H01M4/134 ,  H01M4/133 ,  H01M4/485 ,  H01M2/16

Abstract: The present invention relates to a negative electrode active material including a carbonaceous matrix having a plurality of nano-particles, wherein the nano-particles have a silicon core, an oxide layer disposed on the silicon core and including SiOx (0

公开(公告)号：US20200251728A1

公开(公告)日：2020-08-06

申请号：US16851755

申请日：2020-04-17

Applicant: LG CHEM, LTD.

Inventor： Jun Hyuk SONG ,  Eun Kyung KIM ,  Yong Ju LEE ,  Sang Wook WOO ,  Ju Ho CHUNG ,  Suk In NOH

IPC: H01M4/36 ,  H01M10/052 ,  H01M4/38 ,  H01M4/525

Abstract: A lithium secondary battery, wherein there is a pre-lithiated negative electrode such that a total irreversible capacity of a positive electrode is greater than a total irreversible capacity of the negative electrode while satisfying 150

公开(公告)号：US20200243853A1

公开(公告)日：2020-07-30

申请号：US16756305

申请日：2018-10-26

Applicant: LG CHEM, LTD.

Inventor： Su Min LEE ,  Eun Kyung KIM ,  Yong Ju LEE ,  Rae Hwan JO ,  Dong Hyuk KIM ,  Se Mi PARK

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/66 ,  H01M10/0525

Abstract: A silicon-carbon complex comprising carbon-based particles and silicon-based particles, wherein the silicon-based particles are dispersed and positioned on surfaces of the carbon-based particles, the carbon-based particles have a specific surface area of 0.4 m2/g to 1.5 m2/g, and the silicon-based particles are doped with one or more elements selected from the group consisting of Mg, Li, Ca, and Al, and a negative electrode active material for lithium secondary battery comprising the same.