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公开(公告)号：US20220200004A1
公开(公告)日：2022-06-23
申请号：US17582401
申请日：2022-01-24
发明人： Bobing HU , Chengyong LIU , Yongsheng GUO , Meng CHENG , Jiawei FU , Qian LI , Chengdu LIANG
IPC分类号： H01M4/62 , H01M10/0562 , H01M10/0525 , H01M4/134
摘要： This application provides a lithium secondary battery and a negative electrode plate for the lithium secondary battery. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, where a surface of the negative electrode active material layer closer to the current collector is provided with an elastic coating. And the elastic coating includes an elastic polymer and a conductive agent. At a pressure of 1 MPa to 20 MPa, the elastic coating has a compression deformation of 20% to 80% and an elastic modulus of 1 MPa to 800 MPa. And optionally, at the pressure of 1 MPa to 20 MPa, the elastic coating has a compression deformation of 30% to 60% and an elastic modulus of 5 MPa to 100 MPa.
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公开(公告)号：US20230327220A1
公开(公告)日：2023-10-12
申请号：US18206560
申请日：2023-06-06
发明人： Bobing HU , Jieliang ZOU , Chengyong LIU , Jiawei FU , Xiaoning HE , Shengyuan HUANG , Chengbin ZHONG
IPC分类号： H01M4/04 , H01M4/131 , H01M10/42 , H01M10/0569 , H01M10/0525 , H01M4/525 , H01M4/505 , H01M10/054
CPC分类号： H01M10/4235 , H01M4/0435 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M10/054 , H01M10/0569 , H01M2300/0034
摘要： This application provides a battery, and a method and apparatus for curbing battery gassing, and pertains to the field of battery technologies. The battery includes a battery housing, a positive electrode plate, a negative electrode plate, and a non-aqueous electrolyte. A gas reducer is disposed inside the battery housing, the gas reducer includes at least one of alkali metal and alkali metal alloy, and the gas reducer is in no contact with or in non-electrical contact with the negative electrode plate. The apparatus is provided with the foregoing battery. The method for curbing battery gassing includes disposing the gas reducer inside the battery housing, such that the gas reducer is in no contact with or in non-electrical contact with the negative electrode plate. Such battery features simple configuration, no limitation from gas scale effect, timely degassing, and high degassing capacity.
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公开(公告)号：US20230275236A1
公开(公告)日：2023-08-31
申请号：US18311363
申请日：2023-05-03
发明人： Bobing HU , Shengyuan HUANG , Chengyong LIU , Jiawei FU , Xiaoning HE , Jieliang ZOU , Chengbin ZHONG
CPC分类号： H01M4/667 , H01M4/661 , H01M4/0404
摘要： A current collector includes a current collector body and a lithiophilic layer applied on a surface of the current collector body. The lithiophilic layer has lithium affinity and comprises a lithiophilic material. The lithiophilic material comprises an internal structure and an external structure, and the internal structure is a cavity.
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4.发明公开公开(公告)号：US20230223545A1
公开(公告)日：2023-07-13
申请号：US18125174
申请日：2023-03-23
发明人： Chengyong LIU , Meng CHENG , Ang FU , Bobing HU , Yongsheng GUO , Quan FAN
IPC分类号： H01M4/62 , H01M4/134 , H01M4/38 , H01M10/052 , H01M4/04 , H01M4/1395
CPC分类号： H01M4/628 , H01M4/134 , H01M4/382 , H01M10/052 , H01M4/0402 , H01M4/1395 , H01M2004/027
摘要： Embodiments of the present application provide a lithium metal negative electrode, a preparation method therefor and related lithium metal battery and device. The lithium metal negative electrode may comprise: a negative electrode current collector; at least one lithium-based metal layer provided on at least one surface of the negative electrode current collector; and an ion-conducting polymer modification layer, which is located on the surface of one of the at least one lithium-based metal layer and comprises at least catalytic amount of a Lewis acid, the Lewis acid containing cations of a metal capable of forming an alloy-type active material with lithium.
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公开(公告)号：US20220123353A1
公开(公告)日：2022-04-21
申请号：US17564429
申请日：2021-12-29
发明人： Jiawei FU , Chengyong LIU , Bobing HU , Qian LI , Meng CHENG , Yongsheng GUO
IPC分类号： H01M10/056 , H01M10/0525
摘要： The solid electrolyte membrane in this application has a first surface and a second surface opposite the first surface, where the first surface is provided with several micropores that extend into an interior of the solid electrolyte membrane without penetrating to the second surface. This application further provides a solid-state lithium metal battery, battery module, battery pack, and apparatus containing such solid electrolyte membrane. In the solid electrolyte membrane provided in this application, the micropores provided on the first surface of the solid electrolyte membrane do not penetrate to the opposite second surface, so that lithium ions can be induced to deposit in the micropores. This reduces the risk of lithium dendrites growing or even penetrating through the solid electrolyte membrane due to non-uniform deposition of lithium ions at other locations, thereby preventing short circuit of a solid-state lithium metal battery.
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公开(公告)号：US20230335798A1
公开(公告)日：2023-10-19
申请号：US18333345
申请日：2023-06-12
发明人： Shangju LIAO , Chengyong LIU , Bobing HU , Xiaolan CAI
IPC分类号： H01M10/0567 , H01M10/42
CPC分类号： H01M10/0567 , H01M10/4235
摘要： An electrolytic solution includes a lithium salt, an organic solvent, and an additive. The additive is a salt with a formula of M1M2xOy. The M1 is selected from one or more of alkali metal element and NH4+. The M2 is selected from one or more of VB-VIII group elements in a fourth cycle of a periodic table of elements. x is in a range of 0.01-4, and y is in a range of 0.1-9.
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公开(公告)号：US20220069355A1
公开(公告)日：2022-03-03
申请号：US17521766
申请日：2021-11-08
发明人： Meng CHENG , Chengyong LIU , Bobing HU , Yongsheng GUO , Jiawei FU , Qian LI , Chengdu LIANG
IPC分类号： H01M10/0569 , H01M10/0525 , H01M4/134 , H01M4/46 , H01M4/66
摘要： This application provides a lithium metal battery, and relates to the battery field. The lithium metal battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolytic solution infiltrating the separator. The negative electrode includes a negative electrode current collector and a lithium-aluminum alloy layer disposed on at least one surface of the negative electrode current collector; and the electrolytic solution includes an electrolyte and a solvent, where the solvent contains a film-forming agent, and the film-forming agent is FEC and/or DFEC.
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公开(公告)号：US20240006598A1
公开(公告)日：2024-01-04
申请号：US18467468
申请日：2023-09-14
发明人： Wenwen XUE , Xiaoning HE , Chengyong LIU , Bobing HU , Xian HUANG
CPC分类号： H01M4/382 , H01M4/0419 , H01M4/0421 , H01M4/604 , H01M2004/027
摘要： A lithium coating composition includes a lithium-containing metal and a polymer chemically connected to a lithium surface of the lithium-containing metal, and the polymer has a structure shown in Formula I. Each occurrence of Rf independently represents a fluorine-substituted aliphatic group, each occurrence of X independently represents H or an electron-withdrawing group, each occurrence of Z independently represents O, S or NR11 where R11 is H or C1-3 alkyl, * indicates a site connecting a terminal group, n is an integer ≥10, and at least one cyano group in the polymer forms a chemical connection with lithium in the lithium-containing metal.
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9.发明申请公开(公告)号：US20220115666A1
公开(公告)日：2022-04-14
申请号：US17559378
申请日：2021-12-22
发明人： Qian LI , Meng CHENG , Chengyong LIU , Bobing HU , Jiawei FU , Shengyuan HUANG , Yongsheng GUO
摘要： This application provides a negative electrode plate, a lithium metal battery, and an apparatus including the lithium metal battery. The negative electrode plate includes a negative electrode current collector and a lithium-metal negative electrode disposed on at least one surface of the negative electrode current collector, where a polymer protective film is disposed on a surface of the lithium-metal negative electrode away from the negative electrode current collector, the polymer protective film includes a citric acid copolymer, and a number-average molecular weight Mn of the citric acid copolymer is 10,000 to 1,000,000. In this application, a polymer protective film with high tensile strength, high puncture strength, high elongation, and high electrolyte holding capacity may be formed on the surface of the lithium-metal negative electrode in the negative electrode plate.
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10.发明申请公开(公告)号：US20210257657A1
公开(公告)日：2021-08-19
申请号：US16972824
申请日：2020-06-17
发明人： Chengdu LIANG , Chengyong LIU , Bobing HU , Jiawei FU , Qian LI , Meng CHENG , Yongsheng GUO
IPC分类号： H01M10/0562 , H01M10/0525 , H01M10/0585
摘要： The present application provides a preparation method for a solid electrolyte, including: acquiring an initial reaction mixture including a lithium precursor, a central atom ligand and an organic solvent; acquiring a modified solution including a borate ester and the organic solvent; mixing the initial reaction mixture and the modified solution, and drying to acquire an initial product; performing a grinding, cold press and heat treatment to the initial product to obtain the solid electrolyte. In the preparation method provided by the present application, a B and O co-doped sulphide solid electrolyte can be obtained by modifying the sulphide solid electrolyte with the borate ester as a doping raw material. The ionic conductivity of the prepared sulphide solid electrolyte is significantly improved, which is also conducive to improvement of energy density of the all-solid-state batteries.
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