公开(公告)号：US20230008711A1

公开(公告)日：2023-01-12

申请号：US17856119

申请日：2022-07-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Huisu Jeong ,  Kyounghwan Kim ,  Joungwon Park ,  Jeongkuk Shon ,  Jinsuck Heo

IPC: H01M4/36 ,  H01M10/052 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/1315 ,  H01M4/13915 ,  H01M4/04

Abstract: A cathode including: a cathode current collector; and a cathode active material layer disposed on the cathode current collector and including a first surface, and a second surface opposite the first surface and adjacent to the cathode current collector, wherein the cathode active material layer includes a cathode active material including a dopant, and wherein a concentration gradient of the dopant decreases in a direction from the first surface to the second surface.

公开(公告)号：US20230102903A1

公开(公告)日：2023-03-30

申请号：US17931631

申请日：2022-09-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinsuck Heo ,  Samuel Robert Cross ,  Kyounghwan Kim ,  Joungwon Park ,  Jeongkuk Shon ,  Huisu Jeong

IPC: H01M4/80 ,  H01M4/04

Abstract: An electrode for a secondary battery includes a current collector; and an active material structure on the current collector, the activate material structure including: at least one first high-density layer, and at least one second high-density layer, the at least one second high-density layer being further away from the current collector as compared to the at least one first high-density layer; and a low-density layer between the at least one first high-density layer and the at least one second high-density layer, wherein a thickness of the at least one second high-density layer is greater than a thickness of the at least one first high-density layer.

公开(公告)号：US20220293963A1

公开(公告)日：2022-09-15

申请号：US17685547

申请日：2022-03-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Huisu Jeong ,  Jeongkuk Shon ,  Kyounghwan Kim ,  Joungwon Park ,  Hwiyeol Park ,  Jinsuck Heo

IPC: H01M4/72 ,  H01M4/66 ,  H01M4/04

Abstract: An electrode structure including an active material structure, the active material structure including a first active material plate having a plurality of first penetration holes extending in a thickness direction of the first active material plate; and a second active material plate stacked on a side of the first active material plate in a first direction, wherein the electrode structure is configured for use in a secondary battery.