公开(公告)号：US20190229325A1

公开(公告)日：2019-07-25

申请号：US16312972

申请日：2017-07-10

Applicant: Samsung SDI Co., Ltd.

Inventor： Ji Woo AHN ,  Dongwoo KIM ,  Jaehou NAH ,  Bumjin CHANG ,  Yurim CHA ,  Yeonjoo CHOI ,  Ilyoung CHOI

IPC: H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed, and the negative active material includes a primary particle of a crystalline carbon-based material and secondary particle that is an assembly of the primary particles, wherein a ratio of an average particle diameter (D50) of the secondary particle relative to an average particle diameter (D50) of the primary particle (average particle diameter (D50) of the secondary particle/average particle diameter (D50) of the primary particle) ranges from about 1.5 to about 5 and an aspect ratio of the primary particle ranges from about 1 to about 7.

公开(公告)号：US20250132313A1

公开(公告)日：2025-04-24

申请号：US18636336

申请日：2024-04-16

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Eunji KANG ,  Youngugk KIM ,  Deok-Hyun KIM ,  Sunil PARK ,  Ilyoung CHOI ,  Jaewon KIM ,  Hyejin KIM ,  Doori OH ,  Narae KIM ,  Yookyung KIM ,  Banseok LEE

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

Abstract: A negative electrode active material includes a core including secondary particles in which silicon primary particles and a metal carbide are agglomerated; and an amorphous carbon layer on a surface of the core, wherein the primary particles have a full width at half maximum (FWHM, 111) of greater than about 0.5°.

公开(公告)号：US20250125354A1

公开(公告)日：2025-04-17

申请号：US18989130

申请日：2024-12-20

Applicant: Samsung SDI Co., Ltd.

Inventor： Ilyoung CHOI ,  Soonbong Choi ,  Joogho MOON ,  Hee Seon CHOI

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

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative active material including a rod-shaped crystalline carbon; and a silicon-carbon composite.

公开(公告)号：US20250023034A1

公开(公告)日：2025-01-16

申请号：US18383082

申请日：2023-10-24

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyejin KIM ,  Pil Jin YOO ,  Deok-Hyun KIM ,  Youngugk KIM ,  Jaehou NAH ,  Ilyoung CHOI ,  Eunji KANG ,  Sunil PARK ,  Jaewon KIM ,  Doori OH ,  Yookyung KIM ,  Narae KIM ,  Banseok LEE

IPC: H01M4/38 ,  H01M4/36 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/44

Abstract: A negative active material includes a core having a silicon-carbon composite and a polymer coating layer formed on the core, wherein the negative active material has about 1.02 to about 1.6 of a ratio of height of N1s peak occurring at about 400±about 0.5 eV relative to a height of N1s peak occurring at about 405±about 0.5 eV of a bonding energy, and about 1.02 to about 3.0 of a ratio of a height of C1s peak occurring at about 286.5±about 0.5 eV relative to a height of C1s peak occurring at about 290±about 0.5 eV when an X-ray photoelectron spectroscopy (XPS) is measured.

公开(公告)号：US20230307607A1

公开(公告)日：2023-09-28

申请号：US18326895

申请日：2023-05-31

Applicant: Samsung SDI Co., Ltd.

Inventor： Ji Woo AHN ,  Dongwoo KIM ,  Jaehou NAH ,  Bumjin CHANG ,  Yurim CHA ,  Yeonjoo CHOI ,  Ilyoung CHOI

IPC: H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587

CPC classification number: H01M4/133 ,  H01M4/366 ,  H01M4/386 ,  H01M4/587 ,  H01M4/387

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed, and the negative active material includes a primary particle of a crystalline carbon-based material and secondary particle that is an assembly of the primary particles, wherein a ratio of an average particle diameter (D50) of the secondary particle relative to an average particle diameter (D50) of the primary particle (average particle diameter (D50) of the secondary particle/average particle diameter (D50) of the primary particle) ranges from about 1.5 to about 5 and an aspect ratio of the primary particle ranges from about 1 to about 7.

公开(公告)号：US20250125342A1

公开(公告)日：2025-04-17

申请号：US18731582

申请日：2024-06-03

Applicant: SAMSUNG SDI CO., LTD. ,  POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Seyoung OH ,  Sang-Min LEE ,  Hwijoo LEE ,  Ilyoung CHOI ,  Deok-Hyun KIM ,  Youngugk KIM

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/48 ,  H01M4/583 ,  H01M4/60 ,  H01M10/0525

Abstract: A negative electrode active material and a rechargeable lithium battery including the negative electrode active material, the negative electrode active material includes a core including a carbon material; vanadium oxide on a surface of the core; and a fluorine (F)-containing carbon layer on the surface of the core and on a surface of the vanadium oxide.

公开(公告)号：US20250006926A1

公开(公告)日：2025-01-02

申请号：US18679644

申请日：2024-05-31

Applicant: SAMSUNG SDI CO., LTD. ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OFKYUNG HEE UNIVERSITY

Inventor： Ilyoung CHOI ,  Min-Sik Park ,  Sungmin Park ,  Taehee Kim ,  Deok-Hyun Kim ,  Youngugk Kim ,  Jaehou Nah ,  Joo Hyeong Suh

IPC: H01M4/583 ,  C01B21/06 ,  H01M4/02 ,  H01M4/04 ,  H01M4/38 ,  H01M10/0525

Abstract: A negative active material and a rechargeable lithium battery including the same, the negative active material including a core including a carbon material; and a carbon nitride on a surface of the core, and the rechargeable lithium battery including a negative electrode including the negative active material; a positive electrode; and an electrolyte.

公开(公告)号：US20230299288A1

公开(公告)日：2023-09-21

申请号：US17966984

申请日：2022-10-17

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Ilyoung CHOI ,  Soonbong CHOI ,  Joongho MOON ,  Hee Seon CHOI

IPC: H01M4/583 ,  H01M4/38 ,  H01M10/052 ,  H01M10/44

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

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, the negative active material including a rod-shaped crystalline carbon; and a silicon-carbon composite.

公开(公告)号：US20250079448A1

公开(公告)日：2025-03-06

申请号：US18734018

申请日：2024-06-05

Applicant: SAMSUNG SDI CO., LTD. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： SUNIL PARK ,  Hansu KIM ,  Donghyeok MA ,  Mi YU ,  Youngugk KIM ,  Deok-Hyun KIM ,  Ilyoung CHOI

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/485 ,  H01M4/583 ,  H01M10/0525

Abstract: A negative electrode active material and a rechargeable lithium battery including the negative electrode active material, the negative electrode active material includes a core including a carbon material, a silicon material, or a combination thereof; and a shell on a surface of the core, the shell including Si and LixSiOy, in which 1≤x≤3 and 1≤y≤6.

公开(公告)号：US20250070176A1

公开(公告)日：2025-02-27

申请号：US18645467

申请日：2024-04-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Ilyoung CHOI ,  Deok-Hyun KIM ,  Youngugk KIM

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/133 ,  H01M4/587 ,  H01M10/052

Abstract: A negative electrode includes a current collector; and a negative electrode active material on the current collector, the negative electrode active material layer including a polymer having a potential band vs. Li of less than or equal to about 1.5 V, and a silicon active material, wherein the negative electrode has a binding force of greater than or equal to about 1.0 gf/mm and an electrical conductivity of about 1.0 S/m to about 6.0 S/m.