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1. 发明公开

EP4235865A3 SILICON-BASED COMPOSITE NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND ENERGY STORAGE DEVICE 审中-实审
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
申请人： Huawei Technologies Co., Ltd.
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.

2. 发明公开

EP4207388A1 NANO-SILICON COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR, ELECTRODE MATERIAL AND BATTERY 审中-实审
公开(公告)号：EP4207388A1
公开(公告)日：2023-07-05
申请号：EP21870849.3
申请日：2021-05-29
申请人： Huawei Technologies Co., Ltd.
发明人： SU, Hang , SHA, Yujing , XIA, Shengan , XIE, Fengchao
IPC分类号： H01M4/62 , H01M4/38 , H01M10/0525 , B82Y30/00 , B82Y40/00
摘要： Embodiments of this application relate to the field of battery cathode material technologies, and provide a nano-silicon composite material and a preparation method thereof, an electrode material, and a battery, to resolve large volume expansion of a cathode material of a battery and a serious side reaction with an electrolyte. The nano-silicon composite material includes a core, a first coating layer, and a second coating layer. The core includes a nano-silicon crystal. The first coating layer covers a surface of the core. The first coating layer is of a porous structure. A material of the first coating layer includes bisilicate and silicon oxide in a deoxidized state. The second coating layer covers a surface of the first coating layer. A material of the second coating layer includes silicon dioxide in a deoxidized state.

3. 发明公开

EP4235865A2 SILICON-BASED COMPOSITE NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND ENERGY STORAGE DEVICE 审中-实审
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
申请人： Huawei Technologies Co., Ltd.
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.

4. 发明公开

EP4044286A1 NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, LITHIUM ION BATTERY, AND TERMINAL 审中-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
申请人： Huawei Technologies Co., Ltd.
发明人： SU, Hang , XU, Guocheng , WANG, Pinghua , LI, Yangxing
IPC分类号： H01M4/38 , H01M4/52
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.

5. 发明公开

EP4242826A1 ENHANCED SCREEN SHARING METHOD AND SYSTEM AND ELECTRONIC DEVICE 审中-实审
公开(公告)号：EP4242826A1
公开(公告)日：2023-09-13
申请号：EP21909207.9
申请日：2021-12-13
申请人： Huawei Technologies Co., Ltd.
发明人： SU, Hang
IPC分类号： G06F3/147 , G06F3/048
摘要： Embodiments of this application disclose an enhanced screen sharing method and system, and an electronic device. The method includes: A first electronic device displays a first shared interface, and sends interface data of the first shared interface to a second electronic device. The second electronic device receives the interface data, and displays a second shared interface corresponding to the first shared interface. The second electronic device enables an interconnection mode for the first electronic device, and if detecting a trigger operation performed by a user on the second shared interface, determines event information corresponding to the trigger operation. The event information includes an event type and operation area information that correspond to the trigger operation. The second electronic device sends the event information to the first electronic device. The first electronic device receives the event information, and performs a corresponding operation based on the event information. A better interaction between the second electronic device and the first electronic device can be implemented, thereby improving availability and user friendliness of the shared interface, and improving user experience.

6. 发明公开

EP3799161A1 SILICON-BASED COMPOSITE NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND ENERGY STORAGE DEVICE 有权
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
申请人： HUAWEI TECHNOLOGIES CO., LTD.
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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