公开(公告)号：US12230791B2

公开(公告)日：2025-02-18

申请号：US18668268

申请日：2024-05-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventor： Qingyan Ma ,  Yan Wen ,  Yingjie Guan ,  Yuzhen Zhao ,  Qisen Huang

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/58 ,  H01M4/587 ,  H01M4/60

Abstract: Provided are a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material has a core-shell structure, comprising a core and a shell cladding the core, wherein the core has a chemical formula of Li1+xMn1-yAyP1-zRzO4, the shell comprises a first cladding layer cladding the core, a second cladding layer cladding the first cladding layer, a third cladding layer cladding the second cladding layer and a fourth cladding layer cladding the third cladding layer. The positive electrode active material of the present application enables the secondary battery to have a relatively high energy density, and good cycling performance, rate performance and safety performance.

公开(公告)号：US12224434B2

公开(公告)日：2025-02-11

申请号：US17140088

申请日：2021-01-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventor： Chengdu Liang ,  Yingjie Guan ,  Yuzhen Zhao ,  Yan Wen ,  Qisen Huang

IPC: H01M4/48 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/02

Abstract: The present application provide a silicon-oxygen compound, a preparation method thereof and related secondary battery, battery module, battery pack, and device. The silicon-oxygen compound provided by the present application has a formula of SiOx, in which x satisfies 0