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：US20210280855A1

公开(公告)日：2021-09-09

申请号：US17190802

申请日：2021-03-03

Applicant: Samsung SDI Co., Ltd.

Inventor： Eunjoo LEE ,  Narae KIM ,  Joongho MOON ,  Sunil PARK

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

Abstract: A rechargeable lithium battery includes a negative active material including: a secondary particle including a core in which a plurality of primary particles are agglomerated, the primary particles including a natural graphite; and a coating layer including amorphous carbon and surrounding the core, wherein a Raman peak intensity ratio of a D peak (1350 cm−1 to 1370 cm−1) to a D′ peak (1570 cm−1 to 1620 cm−1) (ID/ID′) of the negative active material is about 3.2 to about 3.8, and a lattice constant La of the negative active material is about 30 nm to about 45 nm.

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：US20240356041A1

公开(公告)日：2024-10-24

申请号：US18384494

申请日：2023-10-27

Applicant: SAMSUNG SDI CO., LTD.

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

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

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

Abstract: A negative active material, including a silicon-carbon composite including silicon and amorphous carbon, a metal oxide, and a metal silicate.

公开(公告)号：US20240347703A1

公开(公告)日：2024-10-17

申请号：US18383647

申请日：2023-10-25

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: H01M4/36 ,  C01B32/158 ,  C01B32/159 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

CPC classification number: H01M4/366 ,  C01B32/158 ,  C01B32/159 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M10/052 ,  C01B2202/02 ,  C01B2202/06 ,  C01B2202/22 ,  C01P2006/40 ,  H01M2004/027

Abstract: A negative active material and a rechargeable lithium battery including the negative active material, the negative active material includes a silicon-carbon composite including nano-silicon and amorphous carbon; an N-doped carbon layer on the silicon-carbon composite; and a coating layer on the N-doped carbon layer, the coating layer including carbon nanotubes.

公开(公告)号：US20230307619A1

公开(公告)日：2023-09-28

申请号：US17969035

申请日：2022-10-19

Applicant: SAMSUNG SDI CO., LTD.

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

IPC: H01M4/38 ,  H01M4/583 ,  H01M4/04 ,  H01M4/58 ,  H01M4/36 ,  H01M10/052

CPC classification number: H01M4/386 ,  H01M4/583 ,  H01M4/0471 ,  H01M4/0404 ,  H01M4/0419 ,  H01M4/5825 ,  H01M4/364 ,  H01M10/052 ,  H01M2004/021

Abstract: A negative active material composite, a method of preparing the same, a negative electrode, and a rechargeable lithium battery including the same, the negative active material composite including silicon nanoparticles; amorphous carbon; and graphitized carbon.

公开(公告)号：US20250158021A1

公开(公告)日：2025-05-15

申请号：US18650273

申请日：2024-04-30

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

Inventor： Jaewon KIM ,  Young-Min KIM ,  Youngugk KIM ,  Eunji KANG ,  Deok-Hyun KIM ,  Hyejin KIM ,  Sunil PARK ,  llyoung CHOI ,  Doori OH ,  Narae KIM ,  Yookyung KIM ,  Young-Jun KIM ,  Junmyoung SHEEM

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/38 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: A negative electrode active material includes a core including a silicon-carbon composite; and a coating layer on a surface of the core, the coating layer including a surfactant and graphene, wherein the negative electrode active material has a ratio (Isecond peak/Ifirst peak) of an intensity of a second peak appearing at 2θ=about 45° to about 50° relative to an intensity of a first peak appearing at 2θ=about 25° to about 27° of about 0.1 to about 0.4, in an X-ray diffraction analysis using a CuKα ray.

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°.