公开(公告)号：US20250140832A1

公开(公告)日：2025-05-01

申请号：US19005061

申请日：2024-12-30

Applicant: Ningde Amperex Technology Limited

Inventor： Juan ZHOU ,  Ye LANG ,  Guoxia YUAN ,  Leimin XU

IPC: H01M4/505 ,  H01M4/02 ,  H01M4/58 ,  H01M10/0567

Abstract: An electrochemical device includes a positive electrode plate, a negative electrode plate, and an electrolyte. The positive electrode plate includes a positive electrode active layer, the positive electrode active layer includes a positive electrode active material, and the positive electrode active material includes an additive. During charge/discharge the electrochemical device, when the electrochemical device is in a fully discharged state, an X-ray diffraction pattern of the positive electrode plate has a characteristic diffraction peak 1 at a diffraction angle 2θ ranging from 17.5° to 19.5°, and the additive includes manganese element.

公开(公告)号：US20250140831A1

公开(公告)日：2025-05-01

申请号：US19005048

申请日：2024-12-30

Applicant: Ningde Amperex Technology Limited

Inventor： Guoxia YUAN ,  Ye LANG ,  Leimin XU

IPC: H01M4/505 ,  H01M4/02 ,  H01M4/38

Abstract: A positive active material, including a lithium manganese oxide. An X-ray diffraction pattern of the positive active material exhibits a first diffraction peak in a range of 14.3° to 16.3° and a second diffraction peak in a range of 17.3° to 19.3°. The positive active material of this application achieves a high specific charge capacity and high structural stability, and can increase the energy density and lifespan of the electrochemical device.

公开(公告)号：US20250140795A1

公开(公告)日：2025-05-01

申请号：US19005031

申请日：2024-12-30

Applicant: Ningde Amperex Technology Limited

Inventor： Juan ZHOU ,  Guoxia YUAN ,  Ye LANG ,  Leimin XU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525

Abstract: An electrochemical apparatus, including a positive electrode plate, where the positive electrode plate includes a positive electrode active material layer, and the positive electrode active material layer includes a first lithium manganese oxide and a second lithium manganese oxide; and in a fully discharged state of the electrochemical apparatus, through Raman test, the first lithium manganese oxide has a characteristic peak A in a range of 507 cm−1±10 cm−1 and a characteristic peak B in a range of 660 cm−1±10 cm−1, and the second lithium manganese oxide has a characteristic peak C in a range of 625 cm−1±10 cm−1. The electrochemical apparatus has high initial coulombic efficiency and excellent cycling performance on the basis of high energy density.

公开(公告)号：US20220112093A1

公开(公告)日：2022-04-14

申请号：US17265136

申请日：2020-01-21

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Feng GU ,  Shiyang CHENG ,  Ye LANG ,  Leimin XU

IPC: C01G53/00 ,  H01M10/0525 ,  C01G51/00

Abstract: A cathode material includes a lithium composite oxide having lithium (Li) and at least one selected from cobalt (Co), nickel (Ni), manganese (Mn) or aluminum (Al); and a lithium-containing transition metal nitride. A transition metal in the lithium-containing transition metal nitride is at least one selected from cobalt (Co), nickel (Ni), or manganese (Mn). The cathode material provides excellent dynamic performance.

公开(公告)号：US20250140815A1

公开(公告)日：2025-05-01

申请号：US19006363

申请日：2024-12-31

Applicant: Ningde Amperex Technology Limited

Inventor： Ye LANG ,  Gang PENG ,  Leimin XU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525

Abstract: An electrochemical device, including a positive electrode. The positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed on a surface of the positive electrode current collector. The positive electrode active material layer includes a base portion and a protruding portion on a surface of the base portion away from the current collector, where a thickness of the base portion is d microns, and a height of the protruding portion is a microns. The positive electrode active material layer includes a positive electrode active material, and the positive electrode active material includes a lithium-nickel composite oxide, where a molar proportion of element nickel in the lithium-nickel composite oxide in metal elements other than lithium in the lithium-nickel composite oxide is X, satisfying: 0.2d×x≤a≤1.15d×x.

公开(公告)号：US20250140814A1

公开(公告)日：2025-05-01

申请号：US19004889

申请日：2024-12-30

Applicant: Ningde Amperex Technology Limited

Inventor： Guoxia YUAN ,  Ye LANG ,  Juan ZHOU ,  Leimin XU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/505 ,  H01M4/583 ,  H01M10/0525

Abstract: An electrochemical device, including a positive electrode plate. The positive electrode plate includes a positive active material layer. When the electrochemical device is in a fully discharged state, an X-ray diffraction pattern of the positive active material layer exhibits a first diffraction peak and a second diffraction peak in a range of 17.8° to 19.2°. A diffraction angle of the first diffraction peak is smaller than a diffraction angle of the second diffraction peak. The electrochemical device achieves an increased energy density and improved cycle performance.

公开(公告)号：US20250029986A1

公开(公告)日：2025-01-23

申请号：US18901353

申请日：2024-09-30

Applicant: Ningde Amperex Technology Limited

Inventor： Gang PENG ,  Ye LANG ,  Wenyuan LIU

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/525 ,  H01M4/58

Abstract: A positive electrode material, including: a matrix and a first coating layer located on surface of the matrix, where based a molar content of metal elements other than Li in the first coating layer, a molar percentage of element Co in the first coating layer is W1; and based on a molar content of metal elements other than Li in the matrix, a molar percentage of element Co in the matrix is W2, where W1>W2; and the first coating layer includes a first region having a spinel phase structure.

公开(公告)号：US20240170664A1

公开(公告)日：2024-05-23

申请号：US18428051

申请日：2024-01-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenyuan LIU ,  Gang PENG ,  Ye LANG ,  Leimin XU

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/525 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021

Abstract: A cathode material includes a plurality of first particles. Each first particle includes a secondary particle composed of a plurality of third particles, and the first particle includes a first lithium-containing transition metal oxide; and a plurality of second particles. The second particle includes a fourth particle and/or a secondary particle composed of a plurality of fourth particles, and the second particle includes a second lithium-containing transition metal oxide. The electrochemical device including the cathode material is significantly improved in the aspects of energy density, capacity attenuation and service life.

公开(公告)号：US20230089526A1

公开(公告)日：2023-03-23

申请号：US16970555

申请日：2020-02-21

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED ,  DONGGUAN AMPEREX TECHNOLOGY LIMITED

Inventor： Yangyang ZHANG ,  Gang PENG ,  Ye LANG ,  Wenyuan LIU

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

Abstract: A cathode material includes a lithium composite oxide matrix including lithium (Li) and at least one selected from the group consisting of cobalt (Co), nickel (Ni), manganese (Mn), and aluminium (Al), and has a surface layer which is a rocksalt structure and includes tungsten (W); and a material layer formed on the surface layer of the lithium composite oxide matrix and including tungsten (W) and lithium (Li). The cathode material of the present application provides excellent high-temperature cycle and high-temperature storage performance, and the capability of discharge at a high rate, and improves the safety performance of the electrochemical device.

公开(公告)号：US20210367236A1

公开(公告)日：2021-11-25

申请号：US17252144

申请日：2020-03-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenyuan LIU ,  Gang PENG ,  Ye LANG ,  Leimin XU

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M4/36 ,  H01M10/0525

Abstract: A cathode material includes: a plurality of first particles. Each first particle includes a secondary particle composed of a plurality of third particles, and the first particle includes a first lithium-containing transition metal oxide; and a plurality of second particles. The second particle includes a fourth particle and/or a secondary particle composed of a plurality of fourth particles, and the second particle includes a second lithium-containing transition metal oxide. The electrochemical device including the cathode material is significantly improved in the aspects of energy density, capacity attenuation and service life.