公开(公告)号：US20230057959A1

公开(公告)日：2023-02-23

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 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  H01M10/0525 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00

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：US20230035380A1

公开(公告)日：2023-02-02

申请号：US17935125

申请日：2022-09-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xue Leng ,  Hongyu Liu ,  Changfeng Bie ,  Na Liu ,  Wanqing Cai

IPC: H01M4/58 ,  H01M10/0525

Abstract: A positive active material is provided. In some embodiments, the positive material includes: a substrate and a coating layer coating the substrate, wherein the coating layer includes a fast ion conductor layer and a carbon coating layer, the substrate includes more than one compound of formula (I): LiFe1-aM1aPO4 formula (I), in formula (I), M1 is more than one selected from Cu, Mn, Cr, Zn, Pb, Ca, Co, Ni, Sr, Nb and Ti, and 0≤a≤0.01; the fast ion conductor layer includes a fast ion conductor of a NASICON structure shown in formula (II), Li3-bFe2-bM2b(PO4)3 formula (II), in formula (II), M2 is more than one selected from Ti, Zr, Hf, Ge and Sn with valence of +4, and 0≤b≤1.

公开(公告)号：US11177468B2

公开(公告)日：2021-11-16

申请号：US17135552

申请日：2020-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rui Du ,  Yongchao Liu ,  Deyu Zhao ,  Na Liu

IPC: H01M4/131 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/02

Abstract: This application relates to the field of battery technologies, and in particular, to a high-compacted-density positive electrode material and an electrochemical energy storage apparatus. The positive electrode material includes a lithium-nickel transition metal oxide A and a lithium-nickel transition metal oxide B. The lithium-nickel transition metal oxide A is secondary particles, whose chemical formula is shown in formula I: Lia1(Nib1Coc1Mnd1)x1M1-x1O2-e1Xe1. The lithium-nickel transition metal oxide B is a monocrystalline structure or a monocrystalline-like structure, whose chemical formula is shown in formula II: Lia2(Nib2Coc2Mnd2)x2M′1-x2O2-e2X′e2 (II). The positive electrode material of this application includes the large-particle lithium-nickel transition metal oxide A and the small-particle lithium-nickel transition metal oxide B to improve an energy density of the battery. A degree of crystallinity and particle size distribution of the mixed positive electrode material can improve a compacted density of the high-nickel active material, and ensure lower gassing and good cycle performance.

公开(公告)号：US10784508B2

公开(公告)日：2020-09-22

申请号：US15976713

申请日：2018-05-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huan Ni ,  Yujun Chen ,  Xinliang Kuang ,  Xuguang Gao ,  Long Wang ,  Na Liu

IPC: H01M4/36 ,  C01B25/36 ,  C01G53/00 ,  H01M4/62 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M10/052 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/131 ,  H01M4/02

Abstract: The present disclosure provides a preparation method of a modified positive electrode active material preparation method, which comprising steps of: dispersing a positive electrode active material matrix into an alcohol solvent to form a positive electrode active material matrix suspension; dissolving an alcohol-soluble aluminum salt in an alcohol solvent to form an alcohol-soluble aluminum salt solution; dissolving an alcohol-soluble phosphorous compound in an alcohol solvent to form an alcohol-soluble phosphorous compound solution; mixing the alcohol-soluble aluminum salt solution and the alcohol-soluble phosphorous compound solution and heating to react, obtaining a liquid-phase coating solution which contains aluminum phosphate after the reaction is finished; mixing and stirring the positive electrode active material matrix suspension and the liquid-phase coating solution which contains aluminum phosphate, extraction filtrating and obtaining a filter cake after the stirring is finished, then drying and baking the filter cake, finally obtaining a modified positive electrode active material.

公开(公告)号：US10290865B2

公开(公告)日：2019-05-14

申请号：US15704687

申请日：2017-09-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifeng Li ,  Dingshan Ruan ,  Wei Liang ,  Na Liu ,  Long Wang

IPC: H01M4/02 ,  H01M4/36 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  H01M4/48 ,  H01M4/04 ,  C01G53/00 ,  H01M4/62 ,  H01M10/0525

Abstract: The present application relates to the technical field of Li-ion battery and, more particularly, to a positive electrode material for a Li-ion battery, a method for preparing the same, and a Li-ion battery containing the same. The positive electrode material for a Li-ion battery includes a substrate material and a coating layer coated on a surface of the substrate material, wherein the coating layer includes boron, a chemical formula of the substrate material is LixNiaCobMncO2, wherein 0.99

公开(公告)号：US20180212242A1

公开(公告)日：2018-07-26

申请号：US15877403

申请日：2018-01-23

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xinliang Kuang ,  Yujun Chen ,  Long Wang ,  Na Liu

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/02

Abstract: The present invention provides a positive electrode material for a lithium ion battery including a nickel-containing positive electrode material and a coating layer coated on the nickel-containing positive electrode material, wherein the nickel-containing positive electrode material has a chemical formula of LiNixM1-xO2, 0.5≤x≤1, M is at least one of Co, Mn and Al, and the coating layer contains lithium vanadium phosphate and silica. Compared with the prior art, the coating layer containing lithium vanadium phosphate and silica coated on the nickel-containing positive electrode material of the present invention can remarkably improve the dynamic performances and the cycle performances at high voltage of the lithium ion battery. In addition, the present invention also provides a method for preparing the positive electrode material a lithium ion battery containing the positive electrode material.

公开(公告)号：US12074327B2

公开(公告)日：2024-08-27

申请号：US18052430

申请日：2022-11-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jiazheng Wang ,  Binyi Chen ,  Xuan Li ,  Na Liu ,  Chuying Ouyang

IPC: H01M4/62 ,  C01B32/205

CPC classification number: H01M4/625 ,  C01B32/205 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40

Abstract: An artificial graphite satisfies: PD5t/PD0.5t≤1.35, where PD5t is a compacted density of the artificial graphite measured under a pressure of 5 ton, and PD0.5t is a compacted density of the artificial graphite measured under a pressure of 0.5 ton.

公开(公告)号：US20240213451A1

公开(公告)日：2024-06-27

申请号：US18596640

申请日：2024-03-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yingjie Guan ,  Yongchao Liu ,  Qisen Huang ,  Na Liu ,  Chengdu Liang

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

CPC classification number: H01M4/364 ,  H01M4/0471 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M2004/021

Abstract: This application relates to an electrode active composition, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active composition includes: a first component, the first component being lithium cobalt oxide particles; and a second component, the second component being ternary material particles. The first component includes lithium cobalt oxide particles with a particle size greater than 11 μm and lithium cobalt oxide particles with a particle size less than 6 μm, and a ratio in number of the lithium cobalt oxide particles with a particle size greater than 11 μm to the lithium cobalt oxide particles with a particle size less than 6 μm is 0.2-4.8, and in some embodiments, 0.2-2.8.

公开(公告)号：US20240194870A1

公开(公告)日：2024-06-13

申请号：US18583887

申请日：2024-02-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chongheng Shen ,  Qi Wu ,  Shuxing Huan ,  Dongsheng Luo ,  Na Liu

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/505

Abstract: Provided are a high-nickel ternary positive electrode material, including a matrix Li1+xNiaCobMgcYdM(1−a−b−c−d)O2±y, wherein M is selected from at least one of Mn, Zr, Al, B, Ta, Mo, W, Nb, Sb, and La, wherein: 0.8≤a

公开(公告)号：US12002947B2

公开(公告)日：2024-06-04

申请号：US18109812

申请日：2023-02-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yingjie Guan ,  Yongchao Liu ,  Qisen Huang ,  Na Liu ,  Chengdu Liang

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/0471 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M2004/021

Abstract: This application relates to an electrode active composition, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active composition includes: a first component, the first component being lithium cobalt oxide particles; and a second component, the second component being ternary material particles. The first component includes lithium cobalt oxide particles with a particle size greater than 11 μm and lithium cobalt oxide particles with a particle size less than 6 μm, and a ratio in number of the lithium cobalt oxide particles with a particle size greater than 11 μm to the lithium cobalt oxide particles with a particle size less than 6 μm is 0.2-4.8, and in some embodiments, 0.2-2.8. A summed number of the lithium cobalt oxide particles with a particle size greater than 11 μm and the lithium cobalt oxide particles with a particle size less than 6 μm accounts for above 90% of a total number of particles in the first component.