公开(公告)号：US20240170650A1

公开(公告)日：2024-05-23

申请号：US18383684

申请日：2023-10-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sunil PARK ,  Young-Min KIM ,  Youngugk KIM ,  Changsu SHIN ,  Doori OH ,  Jongmin WON ,  Dae-Hyeok LEE ,  Sungwon JUNG

IPC: H01M4/36 ,  H01M4/583 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/583 ,  H01M10/052 ,  H01M2004/021

Abstract: A negative active material for a rechargeable lithium battery, having a silicon-carbon composite in which crystalline carbon, silicon particles, and amorphous carbon are agglomerated, and single-walled carbon nanotubes are coated on the silicon-carbon composite, to ameliorate the negative effects caused by the expansion and contraction of the volume of a silicon-based negative active material during charging and discharging.

公开(公告)号：US20230135650A1

公开(公告)日：2023-05-04

申请号：US17944630

申请日：2022-09-14

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Young-Min KIM ,  Eunji KANG ,  Youngugk KIM ,  Yookyung KIM ,  Sunil PARK ,  Changsu SHIN ,  Doori OH ,  Jongmin WON ,  Dae-Hyeok LEE ,  Jungho LEE

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/48 ,  H01M4/587 ,  H01M4/04

Abstract: A negative active material composite, a method of preparing the same, and a negative electrode and a rechargeable lithium battery including the same, the negative active material composite including compound particles represented by SiOx, in which 0

公开(公告)号：US20240243261A1

公开(公告)日：2024-07-18

申请号：US18386097

申请日：2023-11-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Eunji KANG ,  Young-Min KIM ,  Sunil PARK ,  Jongmin WON ,  Doori OH ,  Dae-Hyeok LEE ,  Changsu SHIN

IPC: H01M4/36 ,  C01B32/159 ,  C01B33/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587

CPC classification number: H01M4/366 ,  C01B32/159 ,  C01B33/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M2004/021

Abstract: A negative active material for a rechargeable lithium battery, the negative active material including a core having silicon and a first carbon nanotube, an amorphous carbon coating layer surrounding the core, and a second carbon nanotube adhered to the amorphous carbon coating layer.

公开(公告)号：US20240213457A1

公开(公告)日：2024-06-27

申请号：US18535191

申请日：2023-12-11

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jaewon KIM ,  Yongseok KIM ,  Jaehou NAH ,  Youngugk KIM ,  Heeyoung CHU ,  Dae-Hyeok LEE ,  Hyejin KIM ,  Sojeong YU

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

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052 ,  H01M2004/027

Abstract: Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery. The negative active material for a rechargeable lithium battery includes a silicon-carbon composite; and graphene on a surface of the silicon-carbon composite, wherein a specific surface area of the negative active material is about 1.6 m2/g to about 2 m2/g.

公开(公告)号：US20240120466A1

公开(公告)日：2024-04-11

申请号：US18012458

申请日：2021-10-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Changsu SHIN ,  Jongmin KIM ,  Jongmin WON ,  Youngugk KIM ,  Jaemyung KIM ,  Jaehou NAH ,  Dae-Hyeok LEE ,  Jungho LEE

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/38 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M4/136 ,  H01M4/386 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027

Abstract: Provided is that a negative active material for a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery including the same, and a rechargeable lithium including the same, and the negative active material for a rechargeable lithium battery includes an agglomerated product of silicon-based materials comprising a silicon particle, a lithium silicate positioned on a surface of the silicon particle, a first amorphous carbon surrounded on the silicon particle and the lithium silicate; and a second amorphous carbon positioned on the agglomerated product.

公开(公告)号：US20230268490A1

公开(公告)日：2023-08-24

申请号：US18098752

申请日：2023-01-19

Applicant: SAMSUNG SDI CO., LTD. ,  Research & Business Foundation SUNGKYUNKWAN UNIVERSITY

Inventor： Changsu SHIN ,  Youngugk KIM ,  Young-Min KIM ,  Sunil PARK ,  Jongmin WON ,  Jaehou NAH ,  Eunji KANG ,  Doori OH ,  Dae-Hyeok LEE ,  Hyun Jun SONG ,  Myeong Gyun NAM ,  Pil Jin YOO

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/60 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/386 ,  H01M4/587 ,  H01M4/60 ,  H01M10/052 ,  H01M2004/027

Abstract: A negative active material for a rechargeable lithium battery includes a core having a silicon-carbon composite and an amorphous carbon, the silicon-carbon composite being an agglomerated product of a crystalline carbon and silicon particles, and a coating layer on a surface of the core, the coating layer including catecholamine.

公开(公告)号：US20240347704A1

公开(公告)日：2024-10-17

申请号：US18384717

申请日：2023-10-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Doori OH ,  Youngugk KIM ,  Yookyung KIM ,  Young-Min KIM ,  Sunil PARK ,  Jungho LEE ,  Jongmin WON ,  Jaehou NAH ,  Eunji KANG ,  Dae-Hyeok LEE ,  Changsu SHIN

IPC: H01M4/36 ,  C01B32/20 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

CPC classification number: H01M4/366 ,  C01B32/20 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052 ,  C01P2006/40 ,  H01M2004/027

Abstract: A negative active material and a rechargeable lithium battery including the negative active material. The negative active material includes first, second and third active materials. The first active material is a crystalline carbon. The second active material includes a first core, which includes crystalline carbon and a silicon-based material, and a first carbon coating positioned on the first core. The third active material includes a second core, which includes a silicon-based material, and a second carbon coating layer positioned on the second core.

公开(公告)号：US20230361275A1

公开(公告)日：2023-11-09

申请号：US18012470

申请日：2021-11-15

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Dae-Hyeok LEE ,  Youngugk KIM ,  Jaemyung KIM ,  Jaehou NAH ,  Changsu SHIN ,  Chul YOUM ,  Jongmin WON ,  Jungho LEE ,  Heeyoung CHU

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

CPC classification number: H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052 ,  H01M2004/021

Abstract: Provides are an anode active material for a lithium secondary battery and a lithium secondary battery comprising same, wherein the anode active material for a lithium secondary battery comprises a silicon-carbon composite having a void in the central portion, the radius of the central portion corresponds to 30% to 50% of the radius of the anode active material for a lithium secondary battery, and the silicon-carbon composite includes silicon nanoparticles and amorphous carbon.

公开(公告)号：US20220020980A1

公开(公告)日：2022-01-20

申请号：US17375365

申请日：2021-07-14

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Changsu SHIN ,  Heeyoung CHU ,  Youngugk KIM ,  Jaemyung KIM ,  Chul YOUM ,  Jongmin WON ,  Dae-Hyeok LEE ,  Jungho LEE

IPC: H01M4/36 ,  H01M4/485 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62

Abstract: A negative active material for a rechargeable lithium battery, a negative electrode, and a rechargeable lithium battery including the same, the negative active material including a core including silicon nanoparticles and a lithium titanium-based oxide; and an amorphous carbon layer on a surface of the core.

公开(公告)号：US20210143439A1

公开(公告)日：2021-05-13

申请号：US17084983

申请日：2020-10-30

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Young-Min KIM ,  Changsu SHIN ,  Jongmin WON ,  Dae-Hyeok LEE ,  Jaemyung KIM ,  Jaehou NAH

IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/583

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative active material including a Si-carbon composite that includes Si nanoparticles and an amorphous carbon, wherein the negative active material has a sphericity of 0.7 or more, and a BET specific surface area of 10 m2/g or less.