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：US11881583B2

公开(公告)日：2024-01-23

申请号：US17672178

申请日：2022-02-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Valentina Lacivita ,  Yongwoo Shin ,  Samuel Robert Cross

IPC: H01M4/00 ,  H01M4/58 ,  H01M4/02

CPC classification number: H01M4/5825 ,  H01M4/582 ,  H01M4/5815 ,  H01M2004/028

Abstract: A positive electrode active material includes a doped lithium nickel phosphate having an olivine structure comprising distorted NiO6 octahedra. The dopant is an anion; or a combination of at least two transition metals having different ionic radii; or an anion and a metal cation. The positive electrode active material can be used in a positive electrode for an electrochemical cell.

公开(公告)号：US20230187634A1

公开(公告)日：2023-06-15

申请号：US17672178

申请日：2022-02-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Valentina Lacivita ,  Yongwoo Shin ,  Samuel Robert Cross

IPC: H01M4/58

CPC classification number: H01M4/5825 ,  H01M4/5815 ,  H01M4/582 ,  H01M2004/028

Abstract: A positive electrode active material includes a doped lithium nickel phosphate having an olivine structure comprising distorted NiO6 octahedra. The dopant is an anion; or a combination of at least two transition metals having different ionic radii; or an anion and a metal cation. The positive electrode active material can be used in a positive electrode for an electrochemical cell.