公开(公告)号：US20210234161A1

公开(公告)日：2021-07-29

申请号：US17050224

申请日：2019-05-09

Applicant: LG CHEM, LTD.

Inventor： Jun Hyuk SONG ,  Oh Byong CHAE ,  Je Young KIM ,  Yong Ju LEE

IPC: H01M4/38 ,  H01M4/58 ,  H01M4/48 ,  H01M4/04 ,  H01M10/0525

Abstract: A negative electrode active material including a core including silicon, and a coating layer disposed on the core and including a coating material, wherein the coating material includes at least one selected from the group consisting of LiaVbO2 and MgH2, wherein 0.5

公开(公告)号：US20210167369A1

公开(公告)日：2021-06-03

申请号：US17265605

申请日：2019-08-23

Applicant: LG CHEM, LTD.

Inventor： Se Mi PARK ,  Yong Ju LEE ,  Dong Hyuk KIM

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

Abstract: The present invention relates to a negative electrode active material including a silicon-based core, a first coating layer positioned on the silicon-based core, and a second coating layer positioned on the first coating layer, wherein the second coating layer includes a metal material doped onto a surface thereof.

公开(公告)号：US20210151742A1

公开(公告)日：2021-05-20

申请号：US16606090

申请日：2018-03-27

Applicant: LG CHEM, LTD.

Inventor： Dong Hyuk KIM ,  Eun Kyung KIM ,  Yong Ju LEE ,  Rae Hwan JO ,  Jung Hyun CHOI

IPC: H01M4/134 ,  H01M4/1395 ,  H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/58 ,  H01M10/0525

Abstract: A negative electrode active material and a method for preparing a negative electrode active material, comprising preparing a silicon-based compound including SiOx, wherein 0.5

公开(公告)号：US20200343544A1

公开(公告)日：2020-10-29

申请号：US16762080

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: H01M4/38 ,  H01M4/36 ,  H01M4/583 ,  H01M4/131 ,  H01M10/0525

Abstract: The present invention relates to a negative electrode active material including a spherical carbon-based particle, and a carbon layer disposed on the spherical carbon-based particle and including a nano-particle, wherein the nano-particle has a silicon core, an oxide layer disposed on the silicon core and including SiOx (0

公开(公告)号：US20200280059A1

公开(公告)日：2020-09-03

申请号：US16645807

申请日：2018-08-30

Applicant: LG CHEM, LTD.

Inventor： Jung Hyun CHOI ,  So Ra LEE ,  Eun Kyung KIM ,  Yong Ju LEE ,  Sun Young SHIN ,  Hyeon Min SONG ,  Jee Eun KIM ,  Seo Young KWON ,  Il Geun OH ,  Jae Young LEE

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/583 ,  H01M10/0525

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

公开(公告)号：US20210351432A1

公开(公告)日：2021-11-11

申请号：US17382544

申请日：2021-07-22

Applicant: LG CHEM, LTD.

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

IPC: H01M10/0525 ,  H01M4/38 ,  H01M4/583 ,  H01M4/134 ,  H01M4/131 ,  H01M4/36 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525

Abstract: The present invention relates to a negative electrode active material which includes a secondary particle including a first particle which is a primary particle, wherein the first particle includes a first core and a first surface layer which is disposed on a surface of the first core and contains carbon, and the first core includes a metal compound which includes one or more of a metal oxide and a metal silicate and one or more of silicon and a silicon compound; a method of preparing the same; an electrode including the same; and a lithium secondary battery including the same.

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：US20210075009A1

公开(公告)日：2021-03-11

申请号：US16952767

申请日：2020-11-19

Applicant: LG CHEM, LTD.

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

IPC: H01M4/485 ,  H01M4/1395 ,  H01M4/04 ,  H01M4/134 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/131 ,  H01M4/587

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：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：US20190288281A1

公开(公告)日：2019-09-19

申请号：US16318326

申请日：2018-02-26

Applicant: LG CHEM, LTD.

Inventor： Jung Hyun CHOI ,  Dong Hyuk KIM ,  Yong Ju LEE ,  Eun Kyung KIM ,  Rae Hwan JO

IPC: H01M4/38 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/58 ,  H01M2/10 ,  H01M4/36 ,  H01M4/62

Abstract: A negative electrode active material including a core having SiOx (0≤x