公开(公告)号：US11152606B2

公开(公告)日：2021-10-19

申请号：US15824271

申请日：2017-11-28

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Daeseop Lim ,  Hyejin Kwon ,  Bokhyun Ka ,  Ji-hoon Son ,  Kyeuyoon Sheem ,  Jinhyon Lee

IPC: H01M4/133 ,  H01M50/463 ,  C01B32/20 ,  H01M4/02

Abstract: An electrode assembly including a separator between a positive electrode and a negative electrode. Each of the positive electrode and the negative electrode includes a base member and an active material layer at at least one side of the base member. The active material layer of the negative electrode includes an alternating arrangement of orientation portions and non-orientation portions. Each of the orientation portions is oriented to have a constant angle with respect to one side of the negative electrode.

公开(公告)号：US11127946B2

公开(公告)日：2021-09-21

申请号：US16463935

申请日：2017-11-30

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyejin Kwon ,  Bokhyun Ka ,  Kyeuyoon Sheem ,  Jinhyon Lee ,  Daeseop Lim

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/38 ,  H01M4/485 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: Disclosed are a negative electrode for a rechargeable battery and a rechargeable battery including the same. The negative electrode for a rechargeable battery according to an exemplary embodiment of the present invention includes a substrate and an active material layer including graphite formed on at least one surface of the substrate, wherein the active material layer includes an internal layer relatively adjacent to the substrate and a surface layer relatively away from the substrate and the internal layer and the surface layer have a degree of divergence (DD) defined by Equation 1 below, and the DD value of the surface layer is 6% to 50% of the DD value of the internal layer. DD(Degree of Divergence)=(Ia/Itotal)×100  [Equation 1] (Ia is a sum value of peak intensities appearing at a non-planar angle when XRD is measured using a CuKα line, and Itotal is a sum value of peak intensities appearing at every angle when XRD is measured using the CuKα line).

公开(公告)号：US20250140872A1

公开(公告)日：2025-05-01

申请号：US18752495

申请日：2024-06-24

Applicant: Samsung SDI Co., Ltd.

Inventor： Donghyun Shin ,  Jaehong Kim ,  Hyejin Kwon ,  Jungwook Cha

IPC: H01M4/74 ,  H01M4/02 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

Abstract: An electrode and a lithium battery including the same are provided. The electrode includes an electrode active material layer and two or more electrode current collectors arranged along a thickness direction within the electrode active material layer, wherein the two or more electrode current collectors include an upper electrode current collector adjacent a top surface of the electrode active material layer; and a lower electrode current collector adjacent a bottom surface of the electrode active material layer, wherein the electrode active material layer includes an internal electrode active material layer between the upper electrode current collector and the lower electrode current collector; and an external electrode active material layer outside of the upper electrode current collector and the lower electrode current collector, and wherein the two or more electrode current collectors include a porous structure.