公开(公告)号：US11837717B2

公开(公告)日：2023-12-05

申请号：US15577233

申请日：2016-09-23

Applicant: LG CHEM, LTD.

Inventor： Hyun Chul Kim ,  Yong Ju Lee ,  Eun Kyung Kim

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/134 ,  H01M10/052 ,  H01M4/38 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/62 ,  B01J13/04 ,  B01J13/20 ,  H01M4/133

CPC classification number: H01M4/366 ,  B01J13/04 ,  B01J13/20 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/386 ,  H01M4/483 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525

Abstract: The present specification relates to a negative electrode active material which includes a silicon-based composite represented by SiOa (0≤a

公开(公告)号：US11764354B2

公开(公告)日：2023-09-19

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 ,  H01M4/04 ,  H01M4/485 ,  H01M4/587 ,  H01M4/02

CPC classification number: H01M4/386 ,  H01M4/0471 ,  H01M4/485 ,  H01M4/587 ,  H01M2004/027 ,  H01M2004/028

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：US11605811B2

公开(公告)日：2023-03-14

申请号：US16772585

申请日：2019-01-30

Applicant: LG CHEM, LTD.

Inventor： Su Min Lee ,  Yong Ju Lee ,  Rae Hwan Jo ,  Dong Hyuk Kim

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/583 ,  H01M4/58

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

公开(公告)号：US11437611B2

公开(公告)日：2022-09-06

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: H01M4/13 ,  H01M4/134 ,  H01M4/04 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/02

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：US20200220167A1

公开(公告)日：2020-07-09

申请号：US16739538

申请日：2020-01-10

Applicant: LG Chem, Ltd. ,  Dongguk University Industry-Academic Cooperation Foundation

Inventor： Ye Ri Kim ,  Yong Mook Kang ,  Mi Ru Jo ,  Eun Kyung Kim ,  Yong Ju Lee ,  Rae Hwan Jo

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052 ,  H01M4/04

Abstract: A method of preparing a lithium metal oxide having a nickel oxide layer formed on a surface thereof includes (1) complexing a nickel precursor onto a surface of a lithium metal oxide; and (2) calcining, through a heat treatment, the lithium metal oxide—the surface of which is complexed with the nickel precursor—obtained in step (1).

公开(公告)号：US20190267614A1

公开(公告)日：2019-08-29

申请号：US16346347

申请日：2018-05-25

Applicant: LG Chem, Ltd.

Inventor： Yong Ju Lee ,  Sun Young Shin ,  Se Mi Park ,  Il Geun Oh ,  Eun Kyung Kim

IPC: H01M4/1391 ,  H01M4/131 ,  H01M4/134 ,  H01M4/62 ,  H01M4/525 ,  H01M4/38 ,  H01M4/04 ,  H01M10/0525

Abstract: The present invention relates to a method of preparing a positive electrode for a secondary battery, which includes preparing a positive electrode by forming a positive electrode active material layer including a positive electrode active material, a conductive agent, and a binder on a positive electrode collector, impregnating the positive electrode in a sacrificial salt solution including a sacrificial salt additive, and, after the impregnating of the positive electrode in the sacrificial salt solution, drying the positive electrode to fill pores of the positive electrode active material layer with the sacrificial salt additive, and a positive electrode for a secondary battery prepared thereby.

公开(公告)号：US20180226640A1

公开(公告)日：2018-08-09

申请号：US15749936

申请日：2017-03-06

Applicant: LG Chem, Ltd.

Inventor： Jung Hyun Choi ,  Yong Ju Lee ,  Eun Kyung Kim

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  B01J13/04 ,  C23C14/34 ,  C23C14/18

CPC classification number: H01M4/366 ,  B01J13/04 ,  C23C14/185 ,  C23C14/205 ,  C23C14/34 ,  H01M4/13 ,  H01M4/386 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027

Abstract: The present invention relates to a negative electrode active material, a method of preparing the same, and a lithium secondary battery including the same. In particular, the present invention relates to a composite negative electrode active material that includes: a core capable of intercalating and deintercalating lithium ions; and a plurality of coating layers comprising two or more Si layers having different densities formed on a surface of the core, and thus has enhanced stability by minimizing the formation of cracks occurring by the repetition of charging and discharging, a method of preparing the same, and a lithium secondary battery including the same and thus exhibiting enhanced lifespan characteristics.

公开(公告)号：US09812705B2

公开(公告)日：2017-11-07

申请号：US14063424

申请日：2013-10-25

Applicant: LG Chem, Ltd.

Inventor： Yoon Ah Kang ,  Je Young Kim ,  Yong Ju Lee ,  Jin Hyong Lim ,  Hoon Jeong ,  Ki Hwan Kim

IPC: H01M4/36 ,  H01M4/134 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/134 ,  H01M4/38 ,  H01M4/386 ,  H01M4/622 ,  H01M4/623 ,  H01M10/0525

Abstract: Provided is a negative electrode active material comprising (a) a core including one or more non-carbon-based materials selected from the group consisting of silicon, nickel, germanium, and titanium, and (b) an organic polymer coating layer formed of a polymer compound having a content of a fluorine component of 50 wt % or more on a surface of the core.

公开(公告)号：US20170133663A1

公开(公告)日：2017-05-11

申请号：US15409750

申请日：2017-01-19

Applicant: LG Chem, Ltd.

Inventor： Yoon Ah Kang ,  Yong Ju Lee ,  Rae Hwan Jo ,  Je Young Kim

IPC: H01M4/1391 ,  H01M10/0587 ,  H01M10/04 ,  H01M4/131 ,  H01M10/0569 ,  H01M4/62 ,  H01M4/48 ,  H01M4/04 ,  H01M10/0563 ,  H01M10/0525 ,  H01M4/66

CPC classification number: H01M4/1391 ,  B82Y30/00 ,  B82Y40/00 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/366 ,  H01M4/48 ,  H01M4/483 ,  H01M4/587 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0427 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0563 ,  H01M10/0569 ,  H01M10/0587 ,  H01M2220/30 ,  H01M2300/002 ,  H01M2300/0037 ,  Y10S977/742 ,  Y10S977/753 ,  Y10S977/842 ,  Y10S977/948

Abstract: Provided are a composite for an anode active material and a method of preparing the same. More particularly, the present invention provides a composite for an anode active material including a (semi) metal oxide and an amorphous carbon layer on a surface of the (semi) metal oxide, wherein the amorphous carbon layer comprises a conductive agent, and a method of preparing the composite.

公开(公告)号：US09601768B2

公开(公告)日：2017-03-21

申请号：US14224955

申请日：2014-03-25

Applicant: LG CHEM, LTD.

Inventor： Byung Kyu Lim ,  Sang Yun Jung ,  Cheol Hee Park ,  Han Nah Jeong ,  Je Young Kim ,  Yong Ju Lee ,  Hyun Chul Kim

IPC: H01M6/14 ,  H01M4/48 ,  C01B33/113 ,  H01M4/04 ,  H01M4/485 ,  H01M10/052

CPC classification number: H01M4/48 ,  C01B33/113 ,  H01M4/0471 ,  H01M4/049 ,  H01M4/485 ,  H01M10/052 ,  Y02P70/54

Abstract: The present invention relates to a method of preparing silicon oxide, in which the amounts of silicon and oxygen are appropriately controlled by decreasing the amount of the oxygen from silicon oxide containing a relatively large amount of oxygen, silicon oxide prepared by the method, and a secondary battery including the same. According to the method of preparing silicon oxide, silicon oxide (first silicon oxide) including a relatively large amount of oxygen is heat treated in a reducing atmosphere to decrease the amount of the oxygen in the silicon oxide (first silicon oxide) and to prepare silicon oxide (second silicon oxide) including silicon and oxygen in an appropriate amount (Si:SiO2=1:0.7-0.98), thereby improving capacity and initial efficiency and securing stability and cycle properties (lifetime characteristics) of the secondary battery.