公开(公告)号：US20210167362A1

公开(公告)日：2021-06-03

申请号：US17265758

申请日：2019-08-23

Applicant: LG CHEM, LTD.

Inventor： Se Mi PARK ,  Yong Ju LEE ,  Su Min LEE

IPC: H01M4/134 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

Abstract: A silicon-based composite that includes silicon-based particles and one or more doping metals selected from the group consisting of Mg, Ca, Al, Na and Ti is provided. In the silicon-based particles, there is a doping metal concentration gradient from the particle center toward the particle surface.

公开(公告)号：US20200243836A1

公开(公告)日：2020-07-30

申请号：US16754388

申请日：2018-10-19

Applicant: LG CHEM, LTD.

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

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/58 ,  H01M4/134 ,  H01M10/0525 ,  C01B33/32

Abstract: The present invention relates to a method of preparing a negative electrode active material which includes forming a mixture by mixing Li2O and SiOx(0

公开(公告)号：US20190088947A1

公开(公告)日：2019-03-21

申请号：US16085457

申请日：2017-09-12

Applicant: LG CHEM, LTD.

Inventor： Lilin PIAO ,  Eun Kyung KIM ,  Sun Young SHIN ,  Su Min LEE ,  Su Yeon LEE ,  Chang Ju LEE

IPC: H01M4/583 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525

Abstract: The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a negative electrode active material layer including first active material particles each in the form of a secondary particle in which a plurality of primary particles are agglomerated; and second active material particles, wherein the second active material particles have an average particle size (D50) equal to or less than an average particle size (D50) of the primary particles, the first active material particle is artificial graphite, and the second active material particle is a graphite-based particle, and a secondary battery, a battery module, and a battery pack including the same.

公开(公告)号：US20210202931A1

公开(公告)日：2021-07-01

申请号：US16756365

申请日：2018-10-26

Applicant: LG CHEM, LTD.

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

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/587 ,  H01M4/48

Abstract: A negative electrode active material for a lithium secondary battery, the negative electrode active material including, based on 100 parts by weight of the total negative electrode active material, 5 parts by weight to 20 parts by weight of a first carbon-based particle, 55 parts by weight to 90 parts by weight of a second carbon-based particle, and 1 part by weight to 40 parts by weight of a silicon-based particle, wherein the specific surface area of the first carbon-based particle is 1.5 m2/g to 4.5 m2/g, the specific surface area of the second carbon-based particle is 0.4 m2/g to 1.5 m2/g, and the specific surface area of the first carbon-based particle is greater than the specific surface area of the second carbon-based particle, and capable of solving the problem of lifespan deterioration which may be caused by the use of a silicon-based particle as a negative electrode active material.

公开(公告)号：US20210184216A1

公开(公告)日：2021-06-17

申请号：US16761662

申请日：2018-11-06

Applicant: LG CHEM, LTD.

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

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

Abstract: A negative electrode active material including a silicon-carbon-based particle, the silicon-carbon-based particle having a SiCx matrix and boron doped in the SiCx matrix, wherein x of the SiCx matrix is 0.3 or more and less than 0.6.

公开(公告)号：US20200313173A1

公开(公告)日：2020-10-01

申请号：US16650743

申请日：2018-10-19

Applicant: LG CHEM, LTD.

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

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/48 ,  H01M4/62 ,  H01M4/587 ,  H01M10/0525

Abstract: A negative electrode active material which includes a core including SiOx (0

公开(公告)号：US20160032144A1

公开(公告)日：2016-02-04

申请号：US14424356

申请日：2014-08-28

Applicant: LG CHEM, LTD.

Inventor： Yeon Sik CHOI ,  Su Min LEE ,  Chang-Hun YUN ,  Gi Dae CHOI

IPC: C09D177/06 ,  C08K7/14 ,  C08K5/01

CPC classification number: C09D177/06 ,  C08J3/2053 ,  C08J5/005 ,  C08J2300/22 ,  C08J2377/00 ,  C08K3/04 ,  C08K3/041 ,  C08K3/042 ,  C08K3/046 ,  C08K5/01 ,  C08K5/09 ,  C08K7/06 ,  C08K7/14 ,  C08K7/24 ,  C08K2201/011 ,  C08L77/00

Abstract: Disclosed are a resin composition and a molded product obtained using the same. By using the resin composition according to the present invention, a molded product having excellent tensile strength, tensile modulus, electromagnetic shielding effects, anti-static effects, and the like may be provided.

Abstract translation: 公开了使用该组合物得到的树脂组合物和成型体。 通过使用本发明的树脂组合物，可以提供具有优异的拉伸强度，拉伸模量，电磁屏蔽效果，防静电效果等的成型体。

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.