公开(公告)号：US20200185715A1

公开(公告)日：2020-06-11

申请号：US16429999

申请日：2019-06-03

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Fei ZHANG ,  Leimin XU ,  Meng WANG ,  Pengwei CHEN

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/04 ,  C01G53/00

Abstract: The present application relates to a cathode material and an electrochemical device comprising the same. The cathode material comprises a matrix and a coating layer. The matrix comprises a cathode active material capable of reversibly intercalating or deintercalating lithium ions, and the coating layer comprises an organic material having a general formula X—R—CnFaClb, wherein R is a hydrocarbyl and X is a siloxane group. The coating layer can not only reduce the side reaction between the electrolyte and the cathode active material in the electrochemical device, but can also act as a lithium ion conductor layer to accelerate the intercalating or deintercalating of the lithium ions. Therefore, the cathode material coated by the above coating layer has excellent rate performance and impedance characteristics while having excellent cycle stability.

公开(公告)号：US20200235421A1

公开(公告)日：2020-07-23

申请号：US16443071

申请日：2019-06-17

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Molin ZHOU ,  Leimin XU ,  Jianming ZHENG ,  Jianli GAI

IPC: H01M10/0562 ,  H01M10/0525 ,  C01G17/00

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 solid electrolyte. The solid electrolyte comprises a lithium-containing transition metal sulfide being represented by the chemical formula of Li2−2a+bCd1+aMcGe1−dS4, where M is selected from the group consisting of Al, Ga, In, Si, Sn and a combination thereof, wherein 0

公开(公告)号：US20190341649A1

公开(公告)日：2019-11-07

申请号：US16177074

申请日：2018-10-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: H01M10/0525 ,  H01M4/131 ,  H01M4/40

Abstract: The present disclosure provides a cathode material, a method for preparing the same, a cathode and lithium ion battery having the same. The cathode material includes an active component; and a sodium salt dispersed in the active component.

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：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.

公开(公告)号：US20210257619A1

公开(公告)日：2021-08-19

申请号：US16981545

申请日：2020-02-19

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62

Abstract: A cathode includes a current collector, a first material layer and a second material layer. The first material layer includes a first material. The second material layer includes a second material. The second material includes at least one of the followings compounds: phosphate represented by a general formula M1PO4 and lithium titanium phosphate represented by a general formula Li3Ti2-x M2x(PO4)3, and the second material layer is disposed between the current collector and the first material layer. The cathode of the present application is provided with a double-layer structure including at least one of phosphate and lithium titanium phosphate to avoid direct contact between the current collector in the cathode and an anode material layer and optimize the stability of the first material layer, so that the cycle performance, electrochemical stability and safety performance of the electrochemical device are significantly improved.

公开(公告)号：US20190393501A1

公开(公告)日：2019-12-26

申请号：US16176702

申请日：2018-10-31

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: H01M4/525 ,  H01M10/0525

Abstract: The present application relates to a metal oxide and synthesis of a lithium ion battery. Specifically, the present application selects a cobalt oxide compound, which uses Co3O4 as a main body, as a precursor of lithium cobalt oxide, and anion doping is performed in particles of Co3O4 to obtain a doped precursor for lithium cobalt oxide. The general formula of the precursor can be expressed as Co3(O1-yMy)4, where about 0

公开(公告)号：US20230216026A1

公开(公告)日：2023-07-06

申请号：US18113641

申请日：2023-02-24

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Xiaolang LIU ,  Molin ZHOU ,  Leimin XU ,  Yuhao LU

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/04 ,  H01M4/583 ,  H01M10/052

CPC classification number: H01M4/364 ,  H01M4/582 ,  H01M4/0471 ,  H01M4/5835 ,  H01M10/052 ,  H01M2004/028

Abstract: A positive electrode material, including a composite material, where the composite material includes a metal fluoride, a molar ratio of fluorine F to metal element M in the metal fluoride is y, and a molar ratio of fluorine F to metal element M in the composite material is z, where y

公开(公告)号：US20220223909A1

公开(公告)日：2022-07-14

申请号：US17708180

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Molin ZHOU ,  Feng GU ,  Xin JIANG ,  Leimin XU

IPC: H01M10/0562 ,  H01M10/054

Abstract: A solid electrolyte material having a general chemical formula of Li2+xM2+xM′1−xS6, where M is at least one of Al, Ga or In, M′ is at least one of Si or Ge, and 0

公开(公告)号：US20220123291A1

公开(公告)日：2022-04-21

申请号：US17281046

申请日：2020-03-31

Applicant: Ningde Amperex Technology Limited

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

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

Abstract: A positive electrode material includes a lithium composite oxide, and the positive electrode material comprises stress relief particles. There are cavities inside the stress relief particles, and the cavities are closed structures. The positive electrode material that includes the stress relief particles can be used to effectively tackle a stress and relieve the stress in advance, relieve a strain of the positive electrode material used at a high voltage, avoid ruptures of particles of the positive electrode material, and enhance structural stability of the positive electrode material. The positive electrode material and the electrochemical device having the positive electrode material achieve good high-voltage cycle performance and cycle stability.