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1.发明授权公开(公告)号：US11764360B2
公开(公告)日：2023-09-19
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
CPC分类号： H01M4/623 , C08J5/18 , H01M4/0404 , H01M4/73 , C08J2353/00 , H01M10/0525 , H01M2004/027 , H01M2220/20
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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公开(公告)号：US11831024B2
公开(公告)日：2023-11-28
申请号：US17810644
申请日：2022-07-05
发明人： Ang Fu , Chengyong Liu , Yongsheng Guo , Jiawei Fu , Qian Li , Bobing Hu , Shengyuan Huang
IPC分类号： H01M4/66 , H01M4/80 , H01M10/052 , H01M4/02
CPC分类号： H01M4/667 , H01M4/66 , H01M4/801 , H01M10/052 , H01M2004/027
摘要： This application provides a polymer current collector, a preparation method thereof, and a secondary battery, battery module, battery pack, and apparatus associated therewith. The polymer current collector provided in this application includes polymer film layers, where the polymer film layers include a first polymer film layer and a second polymer film layer, a resistivity of the first polymer film layer is denoted as ρ1, a resistivity of the second polymer film layer is denoted as ρ2, and the current collector satisfies ρ1>ρ2. The polymer current collector in this application can induce to deposit of lithium metal from a low conductivity side to a high conductivity side, avoiding risks of depositing lithium ions on the surface of the current collector and thereby increasing cycle life of lithium metal batteries.
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公开(公告)号：US12113167B2
公开(公告)日：2024-10-08
申请号：US18311904
申请日：2023-05-04
发明人： Bobing Hu , Chengyong Liu , Shangju Liao , Xiaoning He , Wenwen Xue , Zhangdi Xie , Shengyuan Huang , Jieliang Zou
IPC分类号： H01M10/052 , H01M10/0562 , H01M10/0565 , H01M10/0567
CPC分类号： H01M10/0562 , H01M10/052 , H01M10/0565 , H01M10/0567 , H01M2220/20 , H01M2300/0068 , H01M2300/0082 , H01M2300/0091
摘要： A composite electrolyte, including a sulfide electrolyte, a polymer electrolyte, and a functional additive material are provided. In some embodiments, the functional additive material is selected from polymers represented by the following structural R1—O—R2-A. In some embodiments, R1 is selected from at least one of polyvinyl group, polypropylene group, polyacrylate group, polyvinylcarbonate group, polyacrylonitrile group, and polystyrene group; R2 is a straight-chain or branched alkyl group with 3-10 carbon atoms; A is selected from at least one aromatic hydrocarbon group of benzene group, biphenyl group, triphenyl group, naphthalene group, anthracene group, phenanthrene group, and pyrene group; and X is selected from at least one of hydrogen atom, halogen atom, mercapto group, hydroxyl group, amine group, and aldehyde group.
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公开(公告)号：US20240047736A1
公开(公告)日：2024-02-08
申请号：US18311904
申请日：2023-05-04
发明人： Bobing Hu , Chengyong Liu , Shangju Liao , Xiaoning He , Wenwen Xue , Zhangdi Xie , Shengyuan Huang , Jieliang Zou
IPC分类号： H01M10/0562 , H01M10/0565 , H01M10/0567 , H01M10/052
CPC分类号： H01M10/0562 , H01M10/0565 , H01M10/0567 , H01M10/052 , H01M2220/20 , H01M2300/0091 , H01M2300/0068 , H01M2300/0082
摘要： A composite electrolyte, including a sulfide electrolyte, a polymer electrolyte, and a functional additive material are provided. In some embodiments, the functional additive material is selected from polymers represented by the following structural R1—O—R2-A. In some embodiments, R1 is selected from at least one of polyvinyl group, polypropylene group, polyacrylate group, polyvinylcarbonate group, polyacrylonitrile group, and polystyrene group; R2 is a straight-chain or branched alkyl group with 3-10 carbon atoms; A is selected from at least one aromatic hydrocarbon group of benzene group, biphenyl group, triphenyl group, naphthalene group, anthracene group, phenanthrene group, and pyrene group; and X is selected from at least one of hydrogen atom, halogen atom, mercapto group, hydroxyl group, amine group, and aldehyde group.
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公开(公告)号：US20240347776A1
公开(公告)日：2024-10-17
申请号：US18755332
申请日：2024-06-26
发明人： Hansen WANG , Chengyong LIU , Zhangdi Xie , Shengyuan Huang , Bobing Hu
IPC分类号： H01M10/0569 , H01M10/0567 , H01M10/0568
CPC分类号： H01M10/0569 , H01M10/0567 , H01M10/0568 , H01M2300/0034 , H01M2300/0037
摘要： Provided is an electrolyte, including a first solvent represented by formula I and a second solvent selected from one or more of formula II and formula III, where R1 is selected from C1-C6 fluoroalkyl; R2 is selected from a hydrogen atom, C1-C6 alkyl or C1-C6 fluoroalkyl; n represents 1 or 2; and R3 to R10 are each independently selected from a hydrogen atom, a fluorine atom, C1-C6 alkyl, or C1-C6 fluoroalkyl. The electrolyte of the disclosure can improve cycle stability and safety of the battery. A secondary battery including the electrolyte, a battery module, a battery pack, and an electrical device are also disclosed.
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公开(公告)号：US20220384861A1
公开(公告)日：2022-12-01
申请号：US17816426
申请日：2022-07-31
发明人： Bobing Hu , Shengyuan Huang , Chengyong Liu , Jiawei Fu , Xiaoning He , Jieliang Zou , Chengbin Zhong
IPC分类号： H01M10/42 , H01M4/62 , H01M4/38 , H01M4/134 , H01M4/1395 , H01M10/052
摘要： A negative-electrode plate, a preparation method thereof, and a secondary battery, a battery module, a battery pack, and an electric apparatus including such negative-electrode plate are provided. The negative-electrode plate includes an alkali metal layer and a polymer film layer provided on at least one surface of the alkali metal layer. Surface resistivity of the polymer film layer gradually increases in a thickness direction of the polymer film layer away from the alkali metal layer. When the negative-electrode plate is used in a secondary battery, lithium dendrites can be effectively inhibited.
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公开(公告)号：US20220367877A1
公开(公告)日：2022-11-17
申请号：US17810644
申请日：2022-07-05
发明人： Ang Fu , Chengyong Liu , Yongsheng Guo , Jiawei Fu , Qian Li , Bobing Hu , Shengyuan Huang
IPC分类号： H01M4/66 , H01M4/04 , H01M10/052 , H01M4/80
摘要： This application provides a polymer current collector, a preparation method thereof, and a secondary battery, battery module, battery pack, and apparatus associated therewith. The polymer current collector provided in this application includes polymer film layers, where the polymer film layers include a first polymer film layer and a second polymer film layer, a resistivity of the first polymer film layer is denoted as ρ1, a resistivity of the second polymer film layer is denoted as ρ2, and the current collector satisfies ρ1>ρ2. The polymer current collector in this application can induce to deposit of lithium metal from a low conductivity side to a high conductivity side, avoiding risks of depositing lithium ions on the surface of the current collector and thereby increasing cycle life of lithium metal batteries.
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