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公开(公告)号：US20230275269A1
公开(公告)日：2023-08-31
申请号：US17281548
申请日：2021-02-03
发明人： Chunrui Xu , Yanyan Xu , Jianming Zheng , Chao Tang
IPC分类号： H01M10/0567
CPC分类号： H01M10/0567
摘要： An electrolyte, including an additive A, wherein the additive A comprises a non-fluorinated lithium borate compound; and at least one additive selected from an additive B, an additive C, an additive D, or an additive E, wherein the additive B comprises at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate, or lithium difluorophosphate; the additive C comprises a compound comprising S═O; the additive D comprises a compound having 2 to 4 cyano groups; and the additive E comprises a silicon-containing carbonate compound. This application provides an electrolyte and an electrochemical apparatus. The electrolyte includes additives such as a non-fluorinated lithium borate compound, thereby effectively improving high-temperature storage performance, cycle performance, floating charge performance and/or overcharge performance of the electrochemical apparatus.
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公开(公告)号：US11735771B2
公开(公告)日：2023-08-22
申请号：US16652468
申请日：2020-01-20
发明人： Wenqiang Li , Shuirong Zhang , Chunrui Xu , Juan Ma
IPC分类号： H01M10/0567 , H01M10/0525 , H01M10/0569
CPC分类号： H01M10/0567 , H01M10/0525 , H01M10/0569 , H01M2300/0042
摘要： The present application relates to an electrolytic solution and an electrochemical device using same. The electrolytic solution of the present application comprises a compound containing a —CN functional group and a compound containing a P—O bond. By introducing the compound containing a —CN functional group and the compound containing a P—O bond into the electrolytic solution, an active material can be better protected, thereby effectively improving floatation performance and nailing performance of a battery, and cycle impedance of the battery.
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公开(公告)号：US12119447B2
公开(公告)日：2024-10-15
申请号：US17362739
申请日：2021-06-29
发明人： Yanyan Xu , Chunrui Xu , Jianming Zheng
IPC分类号： H01M10/0567 , H01M4/131 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/02
CPC分类号： H01M10/0567 , H01M4/131 , H01M4/364 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028 , H01M2300/0025
摘要： An electrochemical apparatus including a positive electrode, a negative electrode, an electrolyte, and a separator. The positive electrode includes a positive electrode current collector and a positive active material layer disposed on the positive current collector. An X-ray photoelectron spectroscopy of the positive active material layer has a peak at 164 eV to 175 eV. The electrolyte has a retention capability of 1.0 g/Ah to 4.0 g/Ah. The electrolyte improves cycle performance, over-discharge storage performance, and safety performance of the electrochemical apparatus.
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公开(公告)号：US11165097B2
公开(公告)日：2021-11-02
申请号：US16454904
申请日：2019-06-27
发明人： Chunrui Xu , Wenqiang Li , Chao Tang , Shuirong Zhang
IPC分类号： H01M10/0564 , H01M10/0525 , C01B25/30 , C07D327/02 , C07D327/10 , C07F7/18 , H01M4/62
摘要： The present application relates to an electrolyte, an electrochemical device and an electronic device comprising the same. The electrolyte of the present application includes a cyclic N-containing sulfonyl-compound and at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate or lithium difluorophosphate. The electrolyte of the present application may further include a sulfur-oxygen double bond containing compound and a silicon-containing carbonate. Compared with the prior art, using the electrolyte provided by the present application can effectively improve the high-temperature storage, cycle performance and overcharge performance of an electrochemical device, such as a lithium-ion battery.
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公开(公告)号：US20220223923A1
公开(公告)日：2022-07-14
申请号：US17708986
申请日：2022-03-30
发明人： Wentao Ma , Hengtao Xia , Chunrui Xu , Jianming Zheng
IPC分类号： H01M10/0587 , H01M10/0567 , H01M10/0569 , H01M50/538
摘要： A battery includes an electrode assembly, an electrolytic solution, a package accommodating the electrode assembly, a first tab, a second tab, and a first filler. The electrode assembly is formed by winding a first electrode plate and a second electrode plate stacked. The first current collector includes a first blank region, a first single-surface-coated region, and a first double-surface-coated region. The first blank region includes a first planar region and a first bent region. The first single-surface-coated region includes a second bent region and a second planar region. The first tab is disposed in the first planar region. The second tab is disposed on the second electrode plate. The first filler is disposed in the first planar region or the second planar region. Projections of the first filler, the first tab, and the second tab in a thickness direction of the electrode assembly do not overlap.
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公开(公告)号：US20210351438A1
公开(公告)日：2021-11-11
申请号：US17362739
申请日：2021-06-29
发明人： Yanyan Xu , Chunrui Xu , Jianming Zheng
IPC分类号： H01M10/0567 , H01M4/36 , H01M4/525 , H01M4/505 , H01M4/131 , H01M10/0525
摘要： An electrochemical apparatus including a positive electrode, a negative electrode, an electrolyte, and a separator. The positive electrode includes a positive electrode current collector and a positive active material layer disposed on the positive current collector. An X-ray photoelectron spectroscopy of the positive active material layer has a peak at 164 eV to 175 eV. The electrolyte has a retention capability of 1.0 g/Ah to 4.0 g/Ah. The electrolyte improves cycle performance, over-discharge storage performance, and safety performance of the electrochemical apparatus.
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