公开(公告)号：US20200067088A1

公开(公告)日：2020-02-27

申请号：US16671487

申请日：2019-11-01

Applicant: LG CHEM, LTD.

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

IPC: H01M4/38 ,  H01M10/052 ,  H01M4/131 ,  H01M4/485 ,  H01M4/587 ,  H01M4/62 ,  H01M4/134 ,  H01M4/1395

Abstract: A negative electrode active material as well as a method of preparing a negative electrode active material which includes preparing a silicon-based compound including SiOx, wherein 0.5

公开(公告)号：US20180342757A1

公开(公告)日：2018-11-29

申请号：US15771168

申请日：2017-06-02

Applicant: LG CHEM, LTD.

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

IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/525 ,  H01M4/505 ,  H01M4/38

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：US20180323425A1

公开(公告)日：2018-11-08

申请号：US15771284

申请日：2017-06-02

Applicant: LG CHEM, LTD.

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

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

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/134 ,  H01M4/364 ,  H01M4/386 ,  H01M4/583 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/027

Abstract: The present invention relates to a negative electrode active material including a secondary particle in which primary particles are aggregated, wherein the primary particle includes: a core including one or more of silicon and a silicon compound; and a surface layer which is disposed on a surface of the core and contains carbon, wherein an average particle size D50 of the core is in a range of 0.5 μm to 20 μm, a method of preparing the same, an electrode including the same, and a lithium secondary battery including the same.

公开(公告)号：US20180269519A1

公开(公告)日：2018-09-20

申请号：US15751916

申请日：2016-12-09

Applicant: LG CHEM, LTD.

Inventor： Rae Hwan JO ,  Yong Ju LEE ,  Eun Kyung KIM

IPC: H01M10/052 ,  H01M4/134 ,  H01M4/133 ,  H01M4/583 ,  H01M4/66 ,  H01M4/70 ,  C23C16/24 ,  C01B33/021

Abstract: The present invention relates to a method of preparing a negative electrode active material for a secondary battery which may prevent oxidation during the preparation of nano-sized silicon particles, a negative electrode active material for a secondary battery prepared thereby, and a negative electrode for a secondary battery and a lithium secondary battery including the same.

公开(公告)号：US20180151874A1

公开(公告)日：2018-05-31

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 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/48 ,  H01M4/587 ,  B01J13/04 ,  B01J13/20

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：US20140106231A1

公开(公告)日：2014-04-17

申请号：US14109611

申请日：2013-12-17

Applicant: LG CHEM, LTD.

Inventor： Cheol Hee PARK ,  Han Nah JEONG ,  Sang Yun JUNG ,  Byung Kyu LIM ,  Yong Ju LEE

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M4/366 ,  C01B32/05 ,  C01B33/113 ,  C01B33/181 ,  H01M4/0421 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/483 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052

Abstract: Provided are a silicon oxide-carbon composite and a method of manufacturing the same. More particularly, the present invention provides a method of manufacturing a silicon oxide-carbon composite including mixing silicon and silicon dioxide to be included in a reaction chamber, depressurizing a pressure of the reaction chamber to obtain a high degree of vacuum while increasing a temperature in the reaction chamber to a reaction temperature, reacting the mixture of silicon and silicon dioxide in a reducing atmosphere, and coating a surface of silicon oxide manufactured by the reaction with carbon, and a silicon oxide-carbon composite manufactured thereby.

Abstract translation: 提供一种氧化硅 - 碳复合材料及其制造方法。 更具体地说，本发明提供了一种制造氧化硅 - 碳复合材料的方法，其包括将要包括在反应室中的硅和二氧化硅混合，减压反应室的压力以获得高真空度，同时增加温度 将反应室反应至反应温度，在还原气氛中使硅和二氧化硅的混合物反应，并且通过与碳反应制备的氧化硅表面和由其制成的氧化硅 - 碳复合材料进行涂覆。