公开(公告)号：US20250149566A1

公开(公告)日：2025-05-08

申请号：US19014194

申请日：2025-01-08

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Min KIM ,  Changsu SHIN ,  Soonho AHN ,  Jaehou NAH ,  Jaemyung KIM

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0525

Abstract: A negative active material composite includes a core and a coating layer surrounding the core. The core includes crystalline carbon, amorphous carbon, and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

公开(公告)号：US20240372085A1

公开(公告)日：2024-11-07

申请号：US18777265

申请日：2024-07-18

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Changsu SHIN ,  Young-Min KIM ,  Soonho AHN ,  Jaehou NAH ,  Jaemyung KIM

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/66 ,  H01M10/0525

Abstract: A negative active material composite includes a core and a coating layer around (surrounding) the core. The core includes amorphous carbon and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

公开(公告)号：US20200280060A1

公开(公告)日：2020-09-03

申请号：US16700203

申请日：2019-12-02

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Min KIM ,  Changsu SHIN ,  Soonho AHN ,  Jaehou NAH ,  Jaemyung KIM

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

Abstract: A negative active material composite includes a core and a coating layer surrounding the core. The core includes crystalline carbon, amorphous carbon, and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

公开(公告)号：US20240396031A1

公开(公告)日：2024-11-28

申请号：US18797497

申请日：2024-08-07

Applicant: Samsung SDI Co., Ltd.

Inventor： Young-Min KIM ,  Changsu SHIN ,  Soonho AHN ,  Jaehou NAH ,  Jaemyung KIM

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/587 ,  H01M10/0525

Abstract: A negative active material composite includes a core and a coating layer surrounding the core. The core includes crystalline carbon, amorphous carbon, and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

公开(公告)号：US20200280062A1

公开(公告)日：2020-09-03

申请号：US16844968

申请日：2020-04-09

Applicant: Samsung SDI Co., Ltd.

Inventor： Changsu SHIN ,  Young-Min KIM ,  Soonho AHN ,  Jaehou NAH ,  Jaemyung KIM

IPC: H01M4/38 ,  H01M4/134 ,  H01M4/66 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

Abstract: A negative active material composite includes a core and a coating layer around (surrounding) the core. The core includes amorphous carbon and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

公开(公告)号：US20180159118A1

公开(公告)日：2018-06-07

申请号：US15833392

申请日：2017-12-06

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Soonho AHN

IPC: H01M4/133 ,  H01M4/1393 ,  H01M4/22 ,  H01M4/04

CPC classification number: H01M4/133 ,  H01M4/0409 ,  H01M4/0435 ,  H01M4/1393 ,  H01M4/22 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021

Abstract: A method for manufacturing a negative electrode of a rechargeable battery includes coating a first active mass on a first surface of a substrate, aligning a first graphite material in the first active mass, and coating a second active mass on a second surface of the substrate. The second active mass includes a second graphite material. The method also includes aligning the second graphite material and pressing the first and second graphite material. The alignment operations are performed by applying magnetic fields, so that a first long axis of the first graphite material forms a first acute angle with the first surface and a second long axis of the second graphite material forms a second acute angle with the second surface. The second long axis is inclined in a direction facing the first long axis, with the substrate therebetween.

公开(公告)号：US20230369593A1

公开(公告)日：2023-11-16

申请号：US18226906

申请日：2023-07-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Soonho AHN

IPC: H01M4/587 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater,


DD(Degree of Divergence)=(Ia/Itotal)*100  [Equation 1]



wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensities at all angles measured by XRD using a CuKα ray.

公开(公告)号：US20230352651A1

公开(公告)日：2023-11-02

申请号：US18198505

申请日：2023-05-17

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Soonho AHN ,  Junkyu LEE

IPC: H01M4/1393 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/58

CPC classification number: H01M4/133 ,  H01M4/1393 ,  H01M4/58 ,  H01M10/0525 ,  H01M2004/027

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on at least one surface of the current collector, the negative active material layer including a carbon negative active material and a conductive agent, wherein the conductive agent includes at least one of a fiber-shaped conductive agent having a average length of about 1 µm to about 200 µm and a particle-shaped conductive agent having a average long diameter of about 1 µm to about 20 µm, and a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater:







DD


Degree of Divergence


=



I
a



/I


total




* 100




­­­[Equation 1]







wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensity at all angles measured by XRD using a CuKα ray.

公开(公告)号：US20220085371A1

公开(公告)日：2022-03-17

申请号：US17537765

申请日：2021-11-30

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Soonho AHN

IPC: H01M4/587 ,  H01M10/0525

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater, DD(Degree of Divergence)=(Ia/Itotal)*100  [Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensities at all angles measured by XRD using a CuKα ray.

公开(公告)号：US20220029153A1

公开(公告)日：2022-01-27

申请号：US17498861

申请日：2021-10-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Soonho AHN ,  Junkyu LEE

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

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on at least one surface of the current collector, the negative active material layer including a carbon negative active material and a conductive agent, wherein the conductive agent includes at least one of a fiber-shaped conductive agent having a average length of about 1 μm to about 200 μm and a particle-shaped conductive agent having a average long diameter of about 1 μm to about 20 μm, and a DD (Degree of Divergence) value defined by Equation 1 is about 24 or greater: DD (Degree of Divergence)=(Ia/Itotal)*100   [Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensity at all angles measured by XRD using a CuKα ray.