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公开(公告)号：US12126016B2
公开(公告)日：2024-10-22
申请号：US17281046
申请日：2020-03-31
Applicant: Ningde Amperex Technology Limited
IPC: H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
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.
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公开(公告)号：US10944106B2
公开(公告)日：2021-03-09
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 , H01M4/02
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
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公开(公告)号：US20220223862A1
公开(公告)日：2022-07-14
申请号：US17709066
申请日：2022-03-30
Applicant: Ningde Amperex Technology Limited
IPC: H01M4/525 , H01M10/0525 , C01G51/00
Abstract: A positive electrode material contains LixNazCo1-yMyO2, where 0.6
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公开(公告)号：US11050081B2
公开(公告)日：2021-06-29
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 , C01B17/22 , C01B17/42
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.
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公开(公告)号：US10770723B2
公开(公告)日：2020-09-08
申请号：US16134914
申请日：2018-09-18
Applicant: Ningde Amperex Technology Limited
Inventor： Chunfeng Zheng , Leimin Xu
Abstract: The examples of the present application provide a positive electrode material and a lithium ion battery. The positive electrode material comprises: a substrate material; and a coating material formed on at least one portion of the surface of the substrate material; the general formula of the substrate material being Li1+xCo1-yMyO2 or LiNiaCobN1-a-bO2, wherein 0≤x
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Patent Agency Ranking
公开(公告)号：US11936042B2
公开(公告)日：2024-03-19
申请号：US17252144
申请日：2020-03-31
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Wenyuan Liu , Gang Peng , Ye Lang , Leimin Xu
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.
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公开(公告)号：US11081686B2
公开(公告)日：2021-08-03
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 , H01M4/1391 , H01M4/485 , H01M10/0525 , H01M4/02
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
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公开(公告)号：US20190088938A1
公开(公告)日：2019-03-21
申请号：US16134914
申请日：2018-09-18
Applicant: Ningde Amperex Technology Limited
Inventor： Chunfeng Zheng , Leimin Xu
IPC: H01M4/36 , H01M10/0525 , H01M4/525 , H01M4/505 , H01M4/62
CPC classification number: H01M4/366 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/624 , H01M10/0525 , H01M2004/028
Abstract: The examples of the present application provide a positive electrode material and a lithium ion battery. The positive electrode material comprises: a substrate material; and a coating material formed on at least one portion of the surface of the substrate material; the general formula of the substrate material being Li1+xCo1-yMyO2 or LiNiaCobN1-a-bO2, wherein 0≤x
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公开(公告)号：US20190051893A1
公开(公告)日：2019-02-14
申请号：US16057810
申请日：2018-08-07
Applicant: Ningde Amperex Technology Limited
Inventor： Fei Zhang , Meng Wang , Leimin Xu , Qunfeng Wang
IPC: H01M4/36 , H01M10/0525 , H01M4/525 , H01M4/48
CPC classification number: H01M4/366 , H01M4/131 , H01M4/483 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M2004/028
Abstract: The examples of the present application provide a positive electrode material and a lithium-ion battery. The positive electrode material comprises: a substrate material; and a coating material formed on at least one part of a surface of the substrate material; the general formula of the substrate material being LixCoyM1-yO2, wherein 1.0≤x≤1.2, 0.8≤y≤1.0 and M is at least one selected from the group consisting of Mg, Ti, Al, Zr, Ni, Mn; the coating material includes Y2O3 and at least two selected from the group consisting of La2O3, ZrO2 and CeO2. The examples of the present application enable the battery prepared by the provided positive electrode material to have a lower storage expansion ratio, a higher capacity retention ratio, and improved cycle performance at a high charge cutoff voltage by the interaction of at least three kinds of oxides.
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公开(公告)号：US20240266531A1
公开(公告)日：2024-08-08
申请号：US18622359
申请日：2024-03-29
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Shiyang Cheng , Jumpei Shitaba , Ye Lang , Leimin Xu
CPC classification number: H01M4/525 , C30B29/22 , H01M4/364 , H01M2004/021 , H01M2004/028
Abstract: A positive electrode material includes first monocrystalline particles, and the first monocrystalline particle has a first length-diameter ratio L1, where L1 satisfies 2≤L1≤5. The positive electrode material includes the first monocrystalline particle having the first length-diameter ratio L1, and a high length-diameter ratio of the first monocrystalline particle is conducive to reducing active crystal planes which cause side reactions on a surface of the positive electrode material, and suppressing structural phase change and interface side reactions of the positive electrode material, which leads to improved cycling performance and storage performance of the electrochemical apparatus at high voltage and high temperature.
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