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：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：US20210151745A1

公开(公告)日：2021-05-20

申请号：US17091181

申请日：2020-11-06

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

Inventor： Changsu SHIN ,  Jaehou NAH ,  Myeong Gyun NAM ,  Pil Jin YOO ,  Gwan Hyun CHOI

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

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery, the negative active material including a composite including silicon particles, metal particles, and a first amorphous carbon; and a second amorphous carbon surrounding on the composite.