公开(公告)号：US20240199441A1

公开(公告)日：2024-06-20

申请号：US18412601

申请日：2024-01-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dong Zhao ,  Qi Wu ,  Chongheng Shen ,  Bangrun Wang ,  Qiang Chen ,  Jingpeng Fan ,  Na Liu

IPC: C01G53/00 ,  H01M4/02 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/00

CPC classification number: C01G53/50 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/00 ,  C01P2002/08 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/12 ,  H01M2004/021 ,  H01M2004/028

Abstract: This application relates to a positive active material, a method for preparing same, an electrode plate, a secondary battery, and an electrical device. The positive active material includes: a core material, including a lithium-rich manganese-based positive electrode material; and a cladding layer, covering an outer surface of the core material, where the cladding layer includes an oxygen-ion conductor and a lithium-ion conductor.

公开(公告)号：US11967706B2

公开(公告)日：2024-04-23

申请号：US17933120

申请日：2022-09-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun Wang ,  Zhenguo Zhang ,  Chongheng Shen ,  Na Liu

IPC: H01M4/36 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  H01M4/04 ,  H01M4/48 ,  H01M4/485 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M10/05 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  C01G49/0027 ,  C01G49/0045 ,  C01G49/0072 ,  C01G51/42 ,  C01G53/42 ,  H01M4/0471 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01P2002/50 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

Abstract: A composite metal oxide material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack and an electrical device are provided. The composite metal oxide material includes a central core and a coating layer on the surface of the central core, in which the central core material has a chemical formula of Li5FexM1-xO4, 0.6≤x≤1; the coating layer material has a chemical formula of LiMO2, M is one or more metal elements with +3 valence, and the absolute value of the difference between the +3-valence ion radius of Fe and the +3-valence ion radius of M is ≤0.02 nm. The composite metal oxide material of the present disclosure makes the secondary battery have high charge capacity, high discharge capacity and long cycle life.

公开(公告)号：US20230136779A1

公开(公告)日：2023-05-04

申请号：US18149079

申请日：2022-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Limei Zhang ,  Peipei Chen ,  Bangrun Wang

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M4/62

Abstract: A lithium-ion battery and a battery module, a battery pack, and an electric apparatus containing the same are provided. The lithium-ion battery includes a positive electrode active material layer including a positive electrode active material and a pre-lithiation agent and an electrolyte including an additive, where the pre-lithiation agent is a lithium metal oxide pre-lithiation agent, the additive includes at least one of compound 1 shown in constitutional formula (I) and compound 2 shown in constitutional formula (II) below. In the following constitutional formula (I), R1 is an oxygen atom or methylene, and R2 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 3 carbon atoms, a halogenated alkyl group having 1 to 3 carbon atoms.

公开(公告)号：US12107266B2

公开(公告)日：2024-10-01

申请号：US17873861

申请日：2022-07-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun Wang ,  Na Liu

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: This application provides a composite positive electrode material and a preparation method thereof, a secondary battery, a battery group including the secondary battery, and an electric apparatus including the secondary battery. The composite positive electrode material includes a lithium-rich metal oxide and a positive electrode active material covering at least a partial surface of the lithium-rich metal oxide, where the positive electrode active material is formed through in-situ reaction between a positive electrode active material precursor and a free lithium compound on the surface of the lithium-rich metal oxide.

公开(公告)号：US20230387416A1

公开(公告)日：2023-11-30

申请号：US18167065

申请日：2023-02-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haotian Xie ,  Na Liu ,  Bangrun Wang

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0568

CPC classification number: H01M4/623 ,  H01M4/0404 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0568 ,  H01M2004/028

Abstract: A positive electrode plate is provided. The positive electrode plate comprises a positive electrode current collector, a positive electrode active material layer provided on at least one surface of the positive electrode current collector, and a lithium supplementing layer provided on a surface of the positive electrode active material layer opposite to the positive electrode current collector. The lithium supplementing layer comprises a positive electrode lithium supplementing material, a conductive agent and a binder A, the positive electrode lithium supplementing material comprises a lithium-rich metal oxide, and the binder A is selected from polymers containing a first monomer unit shown by a formula I and a second monomer unit shown by a formula II, where the R1, R2, R3, R4, R5 and R6 are each independently selected from hydrogen or substituted or unsubstituted C1 to C8 alkyl, and the R is selected from substituted or unsubstituted C1 to C8 alkyl.

公开(公告)号：US11605816B2

公开(公告)日：2023-03-14

申请号：US17874548

申请日：2022-07-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu Chen ,  Xin Sun ,  Xiao Chen ,  Zhenglun Chen ,  Haotian Xie ,  Bangrun Wang ,  Geng Li

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/587 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/0567 ,  H01M4/02

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive-electrode active substance layer, the positive-electrode active substance layer contains a pre-lithiation agent, and a molecular formula of the pre-lithiation agent is LixNiaCu1−a−bMbO2, where 1≤x≤2, 0

公开(公告)号：US12100841B2

公开(公告)日：2024-09-24

申请号：US18446063

申请日：2023-08-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xin Sun ,  Haotian Xie ,  Bangrun Wang

IPC: H01M4/62 ,  H01M4/136 ,  H01M4/36 ,  H01M4/38 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/42 ,  H01M4/02 ,  H01M4/131 ,  H01M10/0525

CPC classification number: H01M4/623 ,  H01M4/136 ,  H01M4/364 ,  H01M4/38 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/622 ,  H01M10/4235 ,  H01M2004/021 ,  H01M2004/028 ,  H01M4/131 ,  H01M10/0525 ,  H01M2220/20

Abstract: A positive electrode slurry composition, and a positive electrode sheet prepared thereof, a secondary battery, a battery module, a battery pack and a power consumption apparatus are described. The positive electrode slurry composition includes a positive electrode active material, a pre-lithiation material, and a binder, where the binder is shown in Formula (II)




where R1, R2, x, y, and z have meanings defined in the specification, a volume average particle size is D10≥0.3 μm, a volume average particle size D50 is 0.5-10 μm. The positive electrode slurry composition includes the binder in Formula (II) and the positive electrode active material with a specific particle size range, which is not easy to agglomerate and has high stability, and is conducive to improving machinability of the positive electrode sheet, and the binder in Formula (II) is conducive to improving bonding strength between the positive electrode active material and the pre-lithiation material.

公开(公告)号：US20240055579A1

公开(公告)日：2024-02-15

申请号：US18490759

申请日：2023-10-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chongheng Shen ,  Shuxing Huan ,  Dongsheng Luo ,  Bangrun Wang ,  Qi Wu ,  Qiang Chen ,  Na Liu

IPC: H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/134 ,  H01M10/0525 ,  H01M2004/028

Abstract: Provided are a lithium-ion battery positive electrode plate, comprising a positive electrode film layer disposed on at least one surface of the positive electrode current collector, wherein the positive electrode film layer comprises a positive electrode active material mixture composed of the following materials: polycrystalline particles of a first positive electrode active material with a particle size of 11.0-20.0 μm; polycrystalline particles of a second positive electrode active material with a particle size of 6.0-10.5 μm; and monocrystalline particles of a third positive electrode active material with a particle size of 1.1-5.2 μm; wherein the number of the polycrystalline particles of the first positive electrode active material is a, the number of the polycrystalline particles of the second positive electrode active material is b, the number of the monocrystalline particles of the third positive electrode active material is c, and (a+b):c is in the range of 5.7:4.3 to 7.7:2.3.

公开(公告)号：US20230282824A1

公开(公告)日：2023-09-07

申请号：US18186952

申请日：2023-03-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haotian Xie ,  Peipei Chen ,  Xin Sun ,  Bangrun Wang ,  Jiantao Huang ,  Xingbu Chen ,  Xiao Chen ,  Na Liu ,  Chengdu Liang

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0568 ,  H01M4/58 ,  H01M4/04 ,  H01M50/207

CPC classification number: H01M4/525 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0568 ,  H01M4/5825 ,  H01M4/0404 ,  H01M50/207 ,  H01M2004/028

Abstract: A lithium ion secondary battery and a preparation method therefor, a battery module, a battery pack, and a device are provided. In some embodiments, the lithium ion secondary battery comprises a positive electrode plate, a negative electrode plate and an electrolyte, wherein the positive electrode plate comprises a positive electrode active material and a positive electrode lithium-supplementing material comprising a lithium-rich metal oxide, and the lithium-rich metal oxide comprises one or more elements of Ni, Co, Fe, Mn, and Cu; the electrolyte comprises an electrolyte lithium salt and a solvent, and has a percentage ε of the total mass of a fluorine element in the anions of the electrolyte lithium salt relative to the total mass of the electrolyte of

公开(公告)号：US11855277B2

公开(公告)日：2023-12-26

申请号：US17971500

申请日：2022-10-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun Wang ,  Na Liu ,  Chengdu Liang ,  Yongchao Liu ,  Xin Sun ,  Haotian Xie

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/0404 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M2004/021 ,  H01M2004/028

Abstract: This application provides a composite positive-electrode material and a preparation method thereof, a positive-electrode plate, a secondary battery, and a battery module, a battery pack, and an apparatus containing such secondary battery. The composite positive-electrode material includes a core and a coating layer covering at least part of a surface of the core, where the core includes a positive-electrode pre-lithiation material, the positive-electrode pre-lithiation material includes a lithium-rich metal oxide, and the coating layer includes a positive-electrode active material.