公开(公告)号：US20240262711A1

公开(公告)日：2024-08-08

申请号：US18500131

申请日：2023-11-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhenguo ZHANG ,  Sihui WANG ,  Jingpeng FAN ,  Na LIU

IPC: C01G53/00

CPC classification number: C01G53/54 ,  C01P2006/40

Abstract: The present application provides a positive electrode active material of Li1+xNiyMzMn2-x-y-zO4-k, −0.1≤x≤0.2, 0.4≤y≤0.6, 0≤z≤0.2, M is one or more of Cr, Mo, Nb, Ru, P, S, Ta, W, Tl, and Ti, and in a first-cycle charging curve of a half battery of the positive electrode active material, a ratio of a charging capacity of 3.5 V-4.4 V to a charging capacity of 3.5 V-4.95 V is A, A meets 0.04≤A≤0.3, a product of k and A meets 0≤kA≤0.015, and the first-cycle charging curve is measured at a rate of 0.1 C. The positive electrode active material of the present application balances high kinetic performance and high chemical stability, and a corresponding secondary battery has both high-rate discharge capability and long-term storage stability.

公开(公告)号：US20240079551A1

公开(公告)日：2024-03-07

申请号：US18387477

申请日：2023-11-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun WANG ,  Na LIU

IPC: H01M4/04 ,  H01M4/525

CPC classification number: H01M4/0471 ,  H01M4/525 ,  H01M2004/021

Abstract: Provided are an electrode active material precursor, a method for preparing the same, an electrode active material, and a battery. The electrode active material precursor includes carbon-composite oxide particles. The oxide satisfies a formula (1):


MaOb  (1),

where element M is selected from one or more of transition metal elements having a relative atomic mass smaller than 65, and optionally being selected from one or more of Ni, Co, Fe, Mn, Zn, Mg, Ca, Cu, Mn, Sn, Mo, Ru, Ir, V, Nb, or Cr, a>0, and b>0. The carbon-composite oxide particles have a powder resistivity smaller than 100 Ω·cm.

公开(公告)号：US20230207812A1

公开(公告)日：2023-06-29

申请号：US18074416

申请日：2022-12-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun WANG ,  Na LIU ,  Chengdu LIANG ,  Yongchao LIU ,  Xin SUN ,  Haotian XIE

IPC: H01M4/62 ,  H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  C01G53/00

CPC classification number: H01M4/62 ,  H01M4/525 ,  H01M10/052 ,  H01M4/131 ,  C01G53/50 ,  H01M2004/028

Abstract: This application discloses a lithium supplement for lithium secondary batteries, a preparation method thereof, and a lithium secondary battery, a battery module, a battery pack, and an apparatus. Tests show that the lithium supplement of this application can maintain its own stability and low metal dissolution during long-term use of lithium secondary batteries, effectively improving energy density of lithium secondary batteries and ensuring a low self-discharge rate of lithium secondary batteries, thereby ensuring that the lithium secondary battery has high energy density, long cycle life, and high safety.

公开(公告)号：US20230062063A1

公开(公告)日：2023-03-02

申请号：US17938930

申请日：2022-09-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hongyu LIU ,  Changfeng BIE ,  Xue LENG ,  Na LIU

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M4/133 ,  H01M4/136 ,  H01M10/0525 ,  C01B25/45

Abstract: A positive active material made of carbon-coated lithium iron phosphate includes a lithium iron phosphate substrate, and a carbon coating layer on a surface of the substrate. The lithium iron phosphate substrate has a general structural formula LiFe1-aMaPO4, where M is at least one selected from Cu, Mn, Cr, Zn, Pb, Ca, Co, Ni, Sr, Nb, or Ti, and 0≤a≤0.01. A carbon coating factor of the carbon-coated lithium iron phosphate, η = BET ⁢ 1 BET ⁢ 2 , satisfies 0.81≤η≤0.95, where BET1 denotes a specific surface area of mesopore and macropore structures in the carbon-coated lithium iron phosphate, and BET2 denotes a total specific surface area of the carbon-coated lithium iron phosphate.

公开(公告)号：US20210119209A1

公开(公告)日：2021-04-22

申请号：US17135519

申请日：2020-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Rui DU ,  Yongchao LIU ,  Sihui WANG ,  Deyu ZHAO ,  Na LIU

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M10/0525

Abstract: The present application relates to the electrochemical field, and in particular, to a positive electrode material, and an electrochemical energy storage apparatus having thereof. The present application provides a positive electrode material, including a substrate. The substrate includes secondary particles containing primary particles. A surface of the substrate is coated with an oxide coating layer. The oxide coating layer comprises a coating element, and the coating element is selected from one or more of Al, Ba, Zn, Ti, Zr, Mg, W, Y, Si, Sn, B, Co, or P. The electrochemical energy storage apparatus comprises the foregoing positive electrode material.

公开(公告)号：US20190044135A1

公开(公告)日：2019-02-07

申请号：US15577290

申请日：2017-08-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： RUI DU ,  Na LIU ,  Yongchao LIU ,  Sihui WANG ,  Zhongling XU ,  Chao YANG

IPC: H01M4/505 ,  H01M4/62 ,  H01M4/525 ,  H01M4/50

Abstract: The disclosure provides a modified positive electrode active material, a preparation method thereof, and an electrochemical energy storage device. The modified positive electrode active material comprises positive electrode active material substrate; first oxide layer, coated on the surface of the positive electrode active material substrate and selected from one or more of oxides of element M being selected from the group of one or more of Li, Al, Zr, Mg, Ti, Y, Si, Ca, Cr, Fe, Zn, Nb, Sn, Ba, and Cd; and second oxide layer having a continuous layered structure, coated on the surface of the first oxide layer and selected from one or more of oxides of element M′ being selected from one or more of Li, B, P, As, Pb, V, Mo, and Sn. High temperature storage performance and cycling performance of electrochemical energy storage device are improved by the modified positive electrode active material.

公开(公告)号：US20240079565A1

公开(公告)日：2024-03-07

申请号：US18384665

申请日：2023-10-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jing WANG ,  Qiang CHEN ,  Qi WU ,  Dong ZHAO ,  Jingpeng FAN ,  Na LIU

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0565

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0565 ,  H01M2004/028

Abstract: A modified positive electrode material includes an inner core and a cladding layer. The inner core is a positive electrode material, and the cladding layer includes a polymer electrolyte body and a ferroelectric ceramic material dispersed in the polymer electrolyte body.

公开(公告)号：US20240063381A1

公开(公告)日：2024-02-22

申请号：US18498176

申请日：2023-10-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Bangrun WANG ,  Zhenguo ZHANG ,  Sihui WANG ,  Na LIU

IPC: H01M4/505 ,  H01M4/583 ,  H01M4/525 ,  H01M4/04 ,  H01M10/052

CPC classification number: H01M4/505 ,  H01M4/583 ,  H01M4/525 ,  H01M4/0471 ,  H01M4/0404 ,  H01M10/052 ,  H01M2004/021

Abstract: Provided are an electrode active material, a method for preparing the electrode active material, an electrode plate, and a battery. The electrode active material includes carbon-coated metal oxide particles. The metal oxide particles satisfy a formula (2):


AcMdOe  (2),

where element A is selected from one or more of alkali metal elements or alkaline earth metal elements; element M is selected from one or more of transition metal elements having a relative atomic mass smaller than 65; and c>0, d>0, and e>0.

公开(公告)号：US20240014386A1

公开(公告)日：2024-01-11

申请号：US18472030

申请日：2023-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dong ZHAO ,  Qi WU ,  Jingpeng FAN ,  Qiang CHEN ,  Jing WANG ,  Na LIU

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/0471 ,  H01M2004/028

Abstract: A positive electrode material includes a core including a lithium-rich manganese-based positive electrode material, and a coating layer enveloping outer surface of the core and including a composite material of a transition metal oxoacid salt and carbon. The transition metal in the transition metal oxoacid salt is selected from at least one of Ti, Mo, W, V, Ta, Nb or Nd and the composite material has a mesh structure.

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