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：US20240243282A1

公开(公告)日：2024-07-18

申请号：US18620128

申请日：2024-03-28

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Wenyuan LIU ,  Ye LANG ,  Guoxia YUAN ,  Leimin XU

IPC: H01M4/58 ,  H01M4/02 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M4/582 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0025

Abstract: An electrochemical device includes a positive electrode plate and an electrolyte, where the positive electrode plate includes a positive electrode material layer, the positive electrode material layer includes a positive electrode active material, and the positive electrode active material contains element Mn and element X, where element X includes at least one of element Co or element Al, and a molar ratio of element X to element Mn is A %, A ranging from 0.1 to 10; and the electrolyte includes a boron-containing lithium salt. Under a synergistic effect of the positive electrode active material and the electrolyte, rate performance and cycling performance of the electrochemical device can be improved.

公开(公告)号：US20220216481A1

公开(公告)日：2022-07-07

申请号：US17700909

申请日：2022-03-22

Applicant: Ningde Amperex Technology Limited

Inventor： Fei ZHANG ,  Kai WANG ,  Leimin XU ,  Meng WANG

IPC: H01M4/62 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: A positive electrode material, an electrochemical device that uses same, and an electronic device. Specifically, a positive is a layered structure. The layered structure includes a strip-like structure containing an atom cluster. The positive electrode material according to this application helps to improve cycle performance and storage performance of the electrochemical device under a high voltage working condition.

公开(公告)号：US20200295399A1

公开(公告)日：2020-09-17

申请号：US16458510

申请日：2019-07-01

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Molin ZHOU ,  Feng GU ,  Leimin XU ,  Jianming ZHENG

IPC: H01M10/0562 ,  C01B17/42 ,  C01B17/22

Abstract: Embodiments of the present application relate to a solid electrolyte and a preparation method thereof, and an electrochemical device and an electronic device comprising the same. The solid electrolyte of the present application includes a solid electrolyte material being represented by the chemical formula of Li1+2x−2yMyGa2+xP1−xS6, where M is selected from the group consisting of Sr, Ba, Zn, Cd and a combination thereof, 0≤x≤0.2 and 0≤y≤0.05. Embodiments of the present application provides a solid electrolyte having good stability with lithium and ionic conductivity by forming the solid electrolyte using lower cost solid electrolyte materials and optimizing the material composition and a crystal structure thereof. At the same time, this also reduces the manufacturing costs of the solid electrolyte, and improves the structural stability of the solid electrolyte.

公开(公告)号：US20200227742A1

公开(公告)日：2020-07-16

申请号：US16294721

申请日：2019-03-06

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Pengwei CHEN ,  Meng WANG ,  Leimin XU ,  Liang WANG

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/48

Abstract: The present application relates to a precursor of lithium cobalt oxide and preparation method thereof and a composite of lithium cobalt oxide prepared from the precursor of the lithium cobalt oxide. Specifically, the present application relates to the precursor of lithium cobalt oxide having a surface coating structure obtained by performing surface coating on the precursor of the lithium cobalt oxide with a metal oxide, and synthesizing a cathode material of the composite of the lithium cobalt oxide used by an electrochemical device using such precursor. The cathode material of the composite of the lithium cobalt oxide synthesized by such a precursor and the electrochemical device containing such cathode material have better structural stability, better cycle stability and better storage and safety performances during high voltage.

公开(公告)号：US20200227741A1

公开(公告)日：2020-07-16

申请号：US16294398

申请日：2019-03-06

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Liang WANG ,  Meng WANG ,  Leimin XU ,  Pengwei CHEN

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/04 ,  C01G51/00

Abstract: The present application relates to a cathode material and an electrochemical device including the cathode material. The cathode material includes a substrate and a coating layer, wherein the substrate is a cathode active substance containing a cobalt element and capable of intercalating and deintercalating lithium ions, and the coating layer is located on the surface of the substrate, wherein the coating layer is LaxLiyCozOa, wherein 1≤x≤2, 0

公开(公告)号：US20200035991A1

公开(公告)日：2020-01-30

申请号：US16217416

申请日：2018-12-12

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Meng WANG ,  Leimin XU ,  Liang WANG ,  Pengwei CHEN

IPC: H01M4/131 ,  H01M4/485 ,  H01M4/1391 ,  H01M10/0525

Abstract: This application relates to a metal oxide and a method for preparing the same. Specifically, Co3O4 is selected as a precursor of lithium cobalt oxide, and one or more metal elements M are doped in the particles of Co3O4 to obtain a doped lithium cobalt oxide precursor Co3−xMxO4, where 0

公开(公告)号：US20190355988A1

公开(公告)日：2019-11-21

申请号：US16158639

申请日：2018-10-12

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Ye LANG ,  Gang PENG ,  Leimin XU ,  Yousong CHENG

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

Abstract: The present application relates to a cathode material and a lithium ion battery. Particularly, the cathode material includes a matrix and a coating layer, wherein the matrix includes lithium cobalt oxide bulk-doped with metal element M, and the coating layer has a spinel phase structure doped with metal element Me. The spinel phase structure can form three-dimensional lithium ion channels, thereby increasing a diffusion path of lithium ions, and introducing more electrochemical reaction active sites. Therefore, when the lithium ion battery with the cathode material is discharged at a current of about 6 C at about −10° C., a capacity retention rate is up to about 99% or above as compared with that when the current is about 0.5 C. At the same time, the lithium ion battery also has high temperature stability, and has excellent cycle performance in high-temperature heavy-current charge-discharge environments.