公开(公告)号：US20240204187A1

公开(公告)日：2024-06-20

申请号：US18594726

申请日：2024-03-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO. LIMITED

Inventor： Chongheng SHEN ,  Rui DU ,  Yongchao LIU ,  Deyu ZHAO ,  Na LIU

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505

CPC classification number: H01M4/525 ,  H01M4/366 ,  H01M4/505 ,  H01M2004/028

Abstract: This disclosure relates to the electrochemical field, and in particular, to a positive electrode material and a preparation method and usage thereof. The positive electrode material of this disclosure includes a substrate, where a general formula of the substrate is LixNiyCozMkMepOrAm, where 0.95≤x≤1.05, 0.5≤y≤1, 0≤z≤1, 0≤k≤1, 0≤p≤0.1, 1≤r≤5.2, 0≤m≤2, m+r≤2, M is selected from one or more of Mn and Al, Me is selected from one or more of Zr, Zn, Cu, Cr, Mg, Fe, V, Ti, Sr, Sb, Y, W, and Nb, and A is selected from one or more of N, F, S, and Cl; and an oxygen defect level of the positive electrode material satisfies at least one of condition (1) or condition (2): (1) 1.77≤OD1≤1.90; or (2) 0.69≤OD2≤0.74.

公开(公告)号：US20220059837A1

公开(公告)日：2022-02-24

申请号：US17517958

申请日：2021-11-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO. LIMITED

Inventor： Chongheng SHEN ,  Rui DU ,  Yongchao LIU ,  Deyu ZHAO ,  Na LIU

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36

Abstract: This disclosure relates to the electrochemical field, and in particular, to a positive electrode material and a preparation method and usage thereof. The positive electrode material of this disclosure includes a substrate, where a general formula of the substrate is LixNiyCozMkMepOrAm, where 0.95≤x≤1.05, 0.5≤y≤1, 0≤z≤1, 0≤k≤1, 0≤p≤0.1, 1≤r≤5.2, 0≤m≤2, m+r≤2, M is selected from one or more of Mn and Al, Me is selected from one or more of Zr, Zn, Cu, Cr, Mg, Fe, V, Ti, Sr, Sb, Y, W, and Nb, and A is selected from one or more of N, F, S, and Cl; and an oxygen defect level of the positive electrode material satisfies at least one of condition (1) or condition (2): (1) 1.77≤OD1≤1.90; or (2) 0.69≤OD2≤0.74.

公开(公告)号：US20240199439A1

公开(公告)日：2024-06-20

申请号：US18322010

申请日：2023-05-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qi WU ,  Chongheng SHEN ,  Qiang CHEN ,  Jingpeng FAN ,  Yuxiang ZHAO ,  Qisen HUANG

IPC: C01G53/00 ,  C01G53/04 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02 ,  H01M10/0525

CPC classification number: C01G53/006 ,  C01G53/04 ,  H01M4/505 ,  H01M4/525 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028 ,  H01M10/0525

Abstract: This application relates to a ternary precursor for making a material for positive electrodes in lithium batteries. In the ternary precursor, primary particles or whiskers of the ternary precursor are distributed in a radial direction. A deformation stacking fault probability fD of the ternary precursor is ≤2.5%. This application further relates to a preparation method of the ternary precursor, a ternary positive electrode material, a secondary battery, a battery module, a battery pack, and an electric apparatus.

公开(公告)号：US20230278886A1

公开(公告)日：2023-09-07

申请号：US18140637

申请日：2023-04-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chongheng SHEN ,  Qi WU ,  Shuxing HUAN ,  Qiang CHEN ,  Na LIU

IPC: C01G53/04 ,  C01G53/00 ,  H01M50/204

CPC classification number: C01G53/04 ,  C01G53/006 ,  H01M50/204 ,  C01P2006/40 ,  C01P2006/80 ,  C01P2004/61 ,  C01P2004/80 ,  C01P2006/12 ,  C01P2002/74

Abstract: Embodiments of this application provide a ternary precursor material, a preparation method thereof, and a positive electrode active substance. A ternary precursor material may be provided in this application and may include a core and a shell, wherein (1) the core may have a molecular formula of NixCoyMn1-x-y(OH)2±a, where 0.8≤x

公开(公告)号：US20220077464A1

公开(公告)日：2022-03-10

申请号：US17418401

申请日：2019-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rui DU ,  Yongchao LIU ,  Chongheng SHEN ,  Sihui WANG ,  Na LIU

IPC: H01M4/525 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/505 ,  C01G53/00

Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm, or LixNiyCozMkMepOrAm with a coating layer on its surface; and the positive active material is single crystal or quasi-single crystal particles, and a particle size Dn10 of the positive active material satisfies: 0.3 μm≤Dn10≤2 μm. In this application, particle morphology of the positive active material and an amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte solution, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating an energy density, cycle performance, and rate performance of the electrochemical energy storage apparatus.