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1.发明公开
公开(公告)号：EP3799161A1
公开(公告)日：2021-03-31
申请号：EP19853852.2
申请日：2019-05-29
发明人： SU, Hang , WANG, Pinghua , LI, Yangxing
IPC分类号： H01M4/36 , H01M4/38 , H01M4/48 , H01M4/62 , H01M10/0525
摘要： Embodiments of the present invention provide a silicon-based composite anode material, including a silicon-based material core and a coating layer coated on a surface of the silicon-based material core, where the coating layer includes a first coating layer disposed on the surface of the silicon-based material core and a second coating layer disposed on a surface of the first coating layer, the first coating layer includes a two-dimensional quinone-aldehyde covalent organic framework material, and the second coating layer includes a fast ion conductor material. With super toughness and an ordered pore structure, the first coating layer can effectively absorb mechanical stress generated by expansion of the silicon-based material core and ensure integrity of the coating layer, and has high electrical conductivity and ionic conductivity, thereby effectively enhancing effects of electron conduction and ion conduction of the coating layer. The second coating layer is relatively rigid, can maintain structural stability of the entire material during silicon expansion and contraction, and effectively alleviates volume expansion. The embodiments of the present invention further provide a method for preparing the silicon-based composite anode material and an energy storage device that includes the silicon-based composite anode material.
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公开(公告)号：EP3629414A1
公开(公告)日：2020-04-01
申请号：EP18816688.8
申请日：2018-06-14
发明人： FAN, Liang , ZHOU, Wei , LI, Yangxing , WANG, Pinghua , CAO, Yong
IPC分类号： H01M10/058 , H01M10/052
摘要： 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, so as to meet diversified requirements of a wearable device.
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公开(公告)号：EP3595062A1
公开(公告)日：2020-01-15
申请号：EP17903184.4
申请日：2017-06-27
发明人： YU, Zhexun , LI, Yangxing
IPC分类号： H01M4/583
摘要： 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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4.发明公开
公开(公告)号：EP4235865A3
公开(公告)日：2023-11-29
申请号：EP23161454.6
申请日：2019-05-29
发明人： SU, Hang , WANG, Pinghua , LI, Yangxing
IPC分类号： H01M4/36 , H01M4/38 , H01M4/48 , H01M4/62 , H01M10/0525 , H01M10/054 , H01G11/06 , H01G11/50 , H01M4/02
摘要： Embodiments of the present invention provide a silicon-based composite anode material, including a silicon-based material core and a coating layer coated on a surface of the silicon-based material core, where the coating layer includes a first coating layer disposed on the surface of the silicon-based material core and a second coating layer disposed on a surface of the first coating layer, the first coating layer includes a two-dimensional quinone-aldehyde covalent organic framework material, and the second coating layer includes a fast ion conductor material. With super toughness and an ordered pore structure, the first coating layer can effectively absorb mechanical stress generated by expansion of the silicon-based material core and ensure integrity of the coating layer, and has high electrical conductivity and ionic conductivity, thereby effectively enhancing effects of electron conduction and ion conduction of the coating layer. The second coating layer is relatively rigid, can maintain structural stability of the entire material during silicon expansion and contraction, and effectively alleviates volume expansion. The embodiments of the present invention further provide a method for preparing the silicon-based composite anode material and an energy storage device that includes the silicon-based composite anode material.
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公开(公告)号：EP4057387A1
公开(公告)日：2022-09-14
申请号：EP20895828.0
申请日：2020-09-16
发明人： LEI, Yu , LEI, Dan , LI, Yangxing , ZHANG, jian , ZENG, leiying , XIA, Shengan , GAO, Yunlei , XU, Fan
IPC分类号： H01M4/36
摘要： 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. When the defect layer includes atoms with the periodic arrangement from that of the atoms in the matrix, an interlayer spacing of the defect layer is different from an interlayer spacing of the matrix. When the defect layer includes atoms with content different from that of the element in the matrix, the defect layer includes a first element or a second element, and content of the first element or the second element in the defect layer is greater than or equal to that in the layered cathode material matrix. The first element or the second element in the defect layer fills a gap between the body layers, or ions formed by the first element in the defect layer replace cations in the layered cathode material matrix, or ions formed by the second element in the defect layer replace anions in the layered cathode material matrix. During a charge/discharge process, the defect layer in the lithium-ion battery cathode material plays a role in buffering a volume change of the cathode material, so as to stabilize a structure of the lithium-ion battery cathode material.
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公开(公告)号：EP3896818A1
公开(公告)日：2021-10-20
申请号：EP19904695.4
申请日：2019-12-25
发明人： LI, Liangyu , LI, Juan , WANG, Pinghua , CAO, Yong , LI, Yangxing
摘要： A battery charging method is provided. In the method, a battery parameter is first obtained, where the battery parameter includes an electrode parameter of a battery. Then, the battery parameter is input into a battery model represented by an ordinary differential equation, to obtain a safe charging boundary value of the battery in n cycles, where the parameter further includes one or more of a structure parameter, a manufacturing process parameter, an electrical parameter, an electrolyte parameter, a diaphragm parameter, and a thermophysical parameter of the battery. The safe charging boundary value is a maximum charging current in which no lithium plating occurs on the battery in different states of charge SOCs and at different temperatures, where n is greater than or equal to 2 and less than or equal to N, N is a cycle life of the battery, and the n cycles refer to n cycles selected from 0 to N cycles. Finally, a maximum safe charging current value in a current quantity of cycles and in a current SOC of the battery is obtained based on the current quantity of cycles, a current temperature, the current SOC, and the safe charging boundary value of the battery.
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7.发明公开
公开(公告)号：EP4235865A2
公开(公告)日：2023-08-30
申请号：EP23161454.6
申请日：2019-05-29
发明人： SU, Hang , WANG, Pinghua , LI, Yangxing
IPC分类号： H01M4/36 , H01M4/38 , H01M4/48 , H01M4/62 , H01M10/0525 , H01M10/054 , H01G11/06 , H01G11/50 , H01M4/02
摘要： Embodiments of the present invention provide a silicon-based composite anode material, including a silicon-based material core and a coating layer coated on a surface of the silicon-based material core, where the coating layer includes a first coating layer disposed on the surface of the silicon-based material core and a second coating layer disposed on a surface of the first coating layer, the first coating layer includes a two-dimensional quinone-aldehyde covalent organic framework material, and the second coating layer includes a fast ion conductor material. With super toughness and an ordered pore structure, the first coating layer can effectively absorb mechanical stress generated by expansion of the silicon-based material core and ensure integrity of the coating layer, and has high electrical conductivity and ionic conductivity, thereby effectively enhancing effects of electron conduction and ion conduction of the coating layer. The second coating layer is relatively rigid, can maintain structural stability of the entire material during silicon expansion and contraction, and effectively alleviates volume expansion. The embodiments of the present invention further provide a method for preparing the silicon-based composite anode material and an energy storage device that includes the silicon-based composite anode material.
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8.发明公开
公开(公告)号：EP4235859A1
公开(公告)日：2023-08-30
申请号：EP21893431.3
申请日：2021-07-19
发明人： SHA, Yujing , YU, Ruohan , XIA, Shengan , LI, Yangxing , ZHOU, Liang
IPC分类号： H01M4/36
摘要： A silicon carbon composite material and a preparation method and application 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 SiO x particles, the carbon matrix is continuously distributed and includes N channels in communication with outside, and the SiO x particles are filled in the channels. A size of the SiO x particle is 0.1 nm to 0.9 nm, 0.9≤x≤1.7, and N≥1 and is an integer. A structure and composition of the silicon carbon composite material are adjusted, so that defects of poor stability and poor electrical conductivity of a silicon-based material can be overcome. In this way, a secondary battery has excellent energy density, and also has good cycle performance, rate performance, and fast charging performance.
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9.发明公开
公开(公告)号：EP4044286A1
公开(公告)日：2022-08-17
申请号：EP20883294.9
申请日：2020-10-23
发明人： SU, Hang , XU, Guocheng , WANG, Pinghua , LI, Yangxing
摘要： Embodiments of the present invention provide a negative electrode material, including a doped silicon-based material. The doped silicon-based material includes a silicon-based material and doping metal elements distributed inside particles of the silicon-based material. The silicon-based material includes nano-silicon or silicon monoxide. A doping amount of the doping metal elements ranges from 1 ppm to 1000 ppm. The negative electrode material is obtained by doping metal elements with an extreme low content into a crystal structure of the silicon-based material, to maintain stability of an original crystal structure of the silicon-based material while improving conducting performance of the silicon-based material. Therefore, an energy density of a cell can be effectively improved, and the silicon-based material is not prone to be pulverized in a charging/discharging process. The embodiments of the present invention further provide a production method of the negative electrode material, a lithium-ion battery, and a terminal.
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公开(公告)号：EP3595048A1
公开(公告)日：2020-01-15
申请号：EP18776082.2
申请日：2018-03-21
发明人： ZHOU, Huihui , LI, Yangxing , LIU, Chenguang , XU, Guocheng
摘要： Embodiments of the present invention provide a battery electrode, including a current collector and an electrode material layer disposed on the current collector. The electrode material layer includes an electrode active material and graphene of a sheet-like structure, a surface of the graphene is modified with magnetic response nanodots, and in the graphene, more than 50% of the graphene is orientationally arranged at an angle of 45° to 90° with respect to a surface, of the current collector, on which the electrode material layer is disposed, to form a heat conduction path having a specific orientation. A fast heat conduction path having a specific orientation exists inside an electrochemical cell material of the battery electrode, so that heat inside the electrochemical cell can be effectively transmitted outwards to the current collector, and transmitted from the current collector to an ambient environment. This resolves a prior-art problem that high-temperature performance of a battery is poor because heat generated inside a single electrochemical cell cannot be conducted from the inside of the electrochemical cell to an environment in a timely manner. The embodiments of the present invention further provide a method for producing the battery electrode and a battery that includes the battery electrode.
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