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公开(公告)号：US20220293922A1
公开(公告)日：2022-09-15
申请号：US17831244
申请日：2022-06-02
Inventor： Yu LEI , Dan LEI , Yangxing LI , Jian ZHANG , Leiying ZENG , Shengan XIA , Yunlei GAO , Fan XU
Abstract: A lithium-ion battery cathode material and a method for preparing the same are disclosed. The lithium-ion battery cathode material includes a layered cathode material matrix and a defect layer. The layered cathode material matrix includes body layers and lithium layers, and the body layer includes a transition metal layer and a lithium layer. The defect layer includes atoms with a periodic arrangement different from that of atoms in the matrix or with content different from that of an element in the matrix. The defect layer is parallel to a 003 crystal plane of the layered cathode material matrix, and dimensions of the defect layer are 0.1 nm to 50 nm in at least one direction and 10 nm to 5000 nm in at least another direction.
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公开(公告)号：US20230286808A1
公开(公告)日：2023-09-14
申请号：US18320435
申请日：2023-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yujing SHA , Ruohan YU , Shengan XIA , Yangxing LI , Liang ZHOU
IPC: C01B33/025 , H01M4/38 , H01M4/66 , H01M4/04
CPC classification number: C01B33/025 , H01M4/386 , H01M4/667 , H01M4/0428 , H01M4/0471
Abstract: Silicon carbon composite materials, preparation methods and applications of the silicon carbon composite material are provided. The silicon carbon composite material includes a core and a carbon coating layer. At least one part of a surface of the core is covered by the carbon coating layer. The core includes a carbon matrix and SiOx particles, the carbon matrix is continuously distributed and includes N channels in communication with outside, and the SiOx particles are filled in the channels. A size of the SiOx particle is 0.1 nm to 0.9 nm, 0.9≤x≤1.7, and N≥1 and is an integer.
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公开(公告)号：US20220294083A1
公开(公告)日：2022-09-15
申请号：US17826875
申请日：2022-05-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wei ZHOU , Huihui ZHOU , Yaoming DENG , Yangxing LI
IPC: H01M50/477 , H01M50/569
Abstract: This application provides a segment membrane, a battery combination, and an electrical device. The segment membrane includes a conductive layer, a first insulation layer, and a second insulation layer that are disposed in a laminated manner, where the conductive layer is located between the first insulation layer and the second insulation layer. The conductive layer includes a first conductive part and a second conductive part that are disposed in a laminated manner and electrically connected. The first insulation layer is a frame structure, and the first insulation layer is disposed on a surface that is of the first conductive part and that is away from the second conductive part. The second insulation layer is a frame structure, and the second insulation layer is disposed on a surface that is of the second conductive part and that is away from the first conductive part.
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Patent Agency Ranking
公开(公告)号：US20200381715A1
公开(公告)日：2020-12-03
申请号：US16998256
申请日：2020-08-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hang SU , Yangxing LI , Zhexun YU , Pinghua WANG
IPC: H01M4/36 , H01M4/62 , H01M4/38 , H01M10/0525 , C23C16/26
Abstract: A composite material and a preparation method thereof are provided to solve the prior-art problem that a silicon anode material used in a battery is prone to cracking and pulverization. The composite material includes a layered silicon core and a plurality of carbon nanotubes. The layered silicon core includes a plurality of silicon-based material layers, and there is an interlayer spacing between two adjacent silicon-based material layers. Each silicon-based material layer has at least one through hole, and the silicon-based material layer includes silicon or silicon oxide. Each of the plurality of carbon nanotubes passes through the through holes on the plurality of silicon-based material layers.
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公开(公告)号：US20250079578A1
公开(公告)日：2025-03-06
申请号：US18951975
申请日：2024-11-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang FAN , Wei ZHOU , Yangxing LI , Pinghua WANG , Yong CAO
IPC: H01M50/136 , H01M50/105 , H01M50/117 , H01M50/119 , H01M50/121 , H01M50/129 , H01M50/14 , H01M50/178 , H01M50/184 , H01M50/557
Abstract: The present invention provides a flexible battery, including an electrochemical cell layer and a wrapping layer that wraps the electrochemical cell layer. The flexible battery further includes an energy absorbing layer. The energy absorbing layer is located between the wrapping layer and upper and lower surfaces, which are opposite to each other, of the electrochemical cell layer. The energy absorbing layer includes a plurality of supporting parts that protrude outward from the upper or lower surface of the electrochemical cell layer. The plurality of supporting parts are mainly made of a foam material or rubber. For the energy absorbing layer, a lower-modulus buffering layer or an empty part may be further disposed between the electrochemical cell layer and the wrapping layer, to complement a wavy surface of the supporting part to form a flat surface.
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6.发明申请公开(公告)号：US20190280296A1
公开(公告)日：2019-09-12
申请号：US16422078
申请日：2019-05-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yangxing LI , Dan LEI
IPC: H01M4/525 , H01M10/0525 , H01M10/46 , H01M4/36 , H02J7/00
Abstract: The present application provides a lithium cobalt oxide positive electrode material, that is, a doped lithium cobalt oxide material: A general formula of doped lithium cobalt oxide is Li1+zCo1−x−yMaxMbyO2, where 0≤x≤0.01, 0≤y≤0.01, and −0.05≤z≤0.08; Ma is a doped monovalent element, and is at least one of Al, Ga, Hf, Mg, Sn, Zn, or Zr; and Mb is a doped polyvalent element, and is at least one of Ni, Mn, V, Mo, Nb, Cu, Fe, In, W, or Cr. Through substitutional doping of a monovalent element, mutation of a layered structure caused by lithium deintercalation is minimized. Through interstitial doping of a polyvalent element, oxidation of Co3' is alleviated and delayed during charging.
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7.发明申请公开(公告)号：US20220085413A1
公开(公告)日：2022-03-17
申请号：US17536697
申请日：2021-11-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qiang MA , Dejun QIN , Yaoming DENG , Yangxing LI , Fan XU
IPC: H01M10/0567 , H01M10/0525 , H01M10/0569 , H01M10/0568
Abstract: Embodiments of the present invention provide a lithium secondary battery electrolyte including a lithium salt, an organic solvent, and a flame retardant, and the flame retardant includes (pentafluoro) cyclotriphosphazene substituted by an electron donating group and (pentafluoro) cyclotriphosphazene substituted by an electron withdrawing group. Both two flame retardants: the (pentafluoro) cyclotriphosphazene substituted by the electron donating group and the (pentafluoro) cyclotriphosphazene substituted by the electron withdrawing group are added to the lithium secondary battery electrolyte, so that a battery has both high safety performance and good electrochemical performance. The embodiments of the present invention further provide a preparation method for the lithium secondary battery electrolyte and a lithium secondary battery including the lithium secondary battery electrolyte.
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公开(公告)号：US20200028163A1
公开(公告)日：2020-01-23
申请号：US16586478
申请日：2019-09-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhexun YU , Yangxing LI
IPC: H01M4/36 , H01M4/38 , H01M4/587 , H01M4/1393 , H01M4/1395
Abstract: A method for preparing an electrode material, an electrode material, and a battery are provided to resolve a prior-art problem that a silicon negative electrode material in a battery is prone to pulverization in a fully intercalated state. The electrode material includes a layered silicon core and graphene quantum dots. The layered silicon core includes at least two layers of silicon-based materials, an interlayer gap exists between two neighboring layers of the at least two layers of silicon-based materials, and the silicon-based material includes at least one of silicon or an oxide of silicon. The graphene quantum dots are located in the interlayer gap between the at least two layers of silicon-based materials.
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