公开(公告)号：US20240222604A1

公开(公告)日：2024-07-04

申请号：US18385008

申请日：2023-10-30

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/386 ,  H01M4/587 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the negative active material, the negative active material includes a silicon-carbon composite including secondary particles in which nano silicon primary particles are agglomerated, and an amorphous carbon coating layer on a surface of the secondary particles; and sodium silicate.

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：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：US20240282925A1

公开(公告)日：2024-08-22

申请号：US18386333

申请日：2023-11-02

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative electrode and a rechargeable lithium battery including the negative electrode, the negative electrode including a current collector, a negative active material layer, and a functional layer between the current collector and the negative active material layer or on the negative active material layer, the functional layer including nanometal and nanocarbon.

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.

公开(公告)号：US20240383754A1

公开(公告)日：2024-11-21

申请号：US18756160

申请日：2024-06-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Changsu SHIN ,  Youngugk KIM ,  Yookyung KIM ,  Doori OH ,  Jaehou NAH ,  Jongmin WON ,  Young-Min KIM ,  Eunji KANG

IPC: C01B32/05 ,  H01M10/052

Abstract: A negative active material and a rechargeable lithium battery including the same. The negative active material includes an inorganic supporter in which pores are formed; a silicon layer coated on the inorganic supporter, and a carbon-based material positioned on the pores of the inorganic supporter and a surface of the inorganic supporter.

公开(公告)号：US20240363860A1

公开(公告)日：2024-10-31

申请号：US18757717

申请日：2024-06-28

Applicant: Samsung SDI Co., Ltd.

Inventor： Changsu SHIN ,  Youngugk KIM ,  Jongmin WON ,  Sunil PARK ,  Jaehou NAH ,  Young-Min KIM ,  Eunji KANG

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M10/052 ,  H01M10/44

CPC classification number: H01M4/583 ,  H01M4/0404 ,  H01M4/366 ,  H01M4/386 ,  H01M10/052 ,  H01M10/44 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative active material, including an inorganic supporter having pores which are filled with silicon, additional silicon located on a surface of the inorganic supporter, and a carbon coating layer on the surface of the inorganic supporter and a surface of the additional silicon located on the surface of the inorganic supporter.