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公开(公告)号：US12110227B2
公开(公告)日：2024-10-08
申请号：US18525902
申请日：2023-12-01
发明人： Sicong Cheng , Qisen Huang
IPC分类号： C01B21/086 , H01M10/0525 , H01M10/0568
CPC分类号： C01B21/086 , H01M10/0525 , H01M10/0568
摘要： A method for recovering lithium bis(fluorosulfonyl)imide is provided in the present application. The method of the present application may comprise: mixing a slag from lithium bis(fluorosulfonyl)imide production process with a solvent of carbonate ester, to obtain a mixed material; subjecting the mixed material to solid-liquid separation, to obtain a discharged liquid and a solid slag; monitoring the chromaticity of the discharged liquid and comparing the chromaticity of the discharged liquid with a chromaticity reference; recycling the discharged liquid to the mixed material, if the chromaticity of the discharged liquid is higher than the chromaticity reference; and recycling the discharged liquid to lithium bis(fluorosulfonyl)imide production process, if the chromaticity of the discharged liquid is lower than or equal to the chromaticity reference.
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公开(公告)号：US12100843B2
公开(公告)日：2024-09-24
申请号：US18325016
申请日：2023-05-29
发明人： Xin Liu , Qisen Huang , Mingling Li , Xianghui Liu , Cheng Li , Jia Peng , Chengdu Liang
CPC分类号： H01M4/667 , H01M4/0404 , H01M50/46 , H01M2004/028
摘要： A positive electrode current collector and a positive electrode plate, a battery, a battery module, a battery pack, and an apparatus including the positive electrode current collector are provided. In some embodiments, a positive electrode current collector is provided, including an organic support layer and an aluminum-based conductive layer disposed on at least one surface of the organic support layer, where the aluminum-based conductive layer contains Al and at least one modifying element selected from O, N, F, B, S, and P, an XPS spectrogram of the aluminum-based conductive layer with a surface passivation layer removed through etching has at least a first peak falling in a range of 70 eV to 73.5 eV and a second peak falling in a range of 73.5 eV to 78 eV, and a ratio x of peak intensity of the second peak to that of the first peak satisfies 0
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公开(公告)号：US20240239685A1
公开(公告)日：2024-07-18
申请号：US18584991
申请日：2024-02-22
发明人： Qingyan Ma , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
CPC分类号： C01G45/006 , H01M4/366 , H01M4/505 , H01M4/604 , C01P2002/72 , C01P2002/85 , C01P2004/84 , C01P2006/10 , C01P2006/40 , H01M2004/028
摘要： A positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core and a cladding layer covering at least a portion of said core, wherein said core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, said cladding layer comprises a polymer containing an electron withdrawing group. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.
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公开(公告)号：US11916229B2
公开(公告)日：2024-02-27
申请号：US18335143
申请日：2023-06-15
发明人： Qingyan Ma , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
CPC分类号： H01M4/366 , H01M4/0404 , H01M4/0471 , H01M4/583 , H01M4/5825 , H01M4/622 , H01M2004/021 , H01M2004/028
摘要： A positive electrode active material and a preparation method therefor, a positive electrode plate containing same, a secondary battery, and a power consuming device are provided. The positive electrode active material has a core-shell structure, comprising an inner core and a shell coating the inner core, wherein the inner core comprises Li1+xMn1−yAyP1−zRzO4, and the shell comprises a first coating layer coating the inner core, and a second coating layer coating the first coating layer, and a third coating layer coating the second coating layer. The positive electrode active material of the present application enables the secondary battery to have a higher energy density, and a good rate performance, cycling performance and safety performance.
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公开(公告)号：US11695112B2
公开(公告)日：2023-07-04
申请号：US17553839
申请日：2021-12-17
发明人： Chengdu Liang , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
CPC分类号： H01M4/386 , H01M4/0416 , H01M4/387 , H01M2004/027
摘要： The present application provides a negative electrode active material, a process for preparing the same, and a secondary battery, a battery module, a battery pack and an apparatus related the same. The negative electrode active material comprises a core material and a polymer-modified coating layer on at least a part of a surface of the core material, the core material is one or more of a silicon-based negative electrode material and a tin-based negative electrode material, the polymer-modified coating layer comprises sulfur element and carbon element, the sulfur element has a mass percentage of from 0.2% to 4% in the negative electrode active material, the carbon element has a mass percentage of from 0.5% to 4% in the negative electrode active material, and the polymer-modified coating layer comprises a —S—C— bond.
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公开(公告)号：US11420875B2
公开(公告)日：2022-08-23
申请号：US17586725
申请日：2022-01-27
发明人： Chengdu Liang , Yuzhen Zhao , Yingjie Guan , Yan Wen , Qisen Huang
摘要： This application belongs to the field of energy storage technology, and specifically discloses a negative active material including SiOx particles and a modified polymer coating layer covering the SiOx particles, in which 0
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公开(公告)号：US11316158B2
公开(公告)日：2022-04-26
申请号：US17159138
申请日：2021-01-26
发明人： Yingjie Guan , Yuzhen Zhao , Yan Wen , Qisen Huang , Xin Liu
摘要： The present application provide a secondary battery and related battery module, battery pack and apparatus. The secondary battery includes a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein the secondary battery includes a positive active material selected from one or more of layered lithium nickel cobalt manganese oxide and layered lithium nickel cobalt aluminum oxide, and a negative active material including graphite and silicon-oxygen compound; the delithiation capacity A of the negative electrode film in the voltage range of 0.005V to the delithiation platform voltage and the delithiation capacity B of the negative electrode film in the voltage range of the delithiation platform voltage to 1.2V satisfy: 1A/B2; and when the secondary battery is discharged to a voltage of 2.5V, the voltage U of the negative electrode plate relative to a lithium metal reference electrode satisfies: 0.5VU0.7V.
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公开(公告)号：US20220085384A1
公开(公告)日：2022-03-17
申请号：US17537520
申请日：2021-11-30
发明人： Xin LIU , Shiwen Wang , Qisen Huang , Cheng Li , Mingling Li , Jia Peng , Xianghui Liu
IPC分类号： H01M4/66
摘要： The present application discloses a composite current collector, an electrode plate and an electrochemical device. The composite current collector includes an organic support layer and a metal conductive layer disposed on at least one surface of the organic support layer; and the composite current collector has a brittleness parameter C of 0.01≤C≤0.5. The composite current collector provided by the present application has relatively high mechanics and mechanical properties which having good electrical conductivity and current collection performance, which can improve preparation yield of the composite current collector, the electrode plate and the electrochemical device and their reliability during use, and enables the electrochemical device to have relatively high electrochemical performance and gravimetric energy density.
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公开(公告)号：US11177479B2
公开(公告)日：2021-11-16
申请号：US16342831
申请日：2018-12-05
发明人： Chengdu Liang , Huafeng Huang , Qisen Huang
IPC分类号： H01M4/66 , H01M10/0525 , H01M4/64
摘要： The present disclosure relates to the field of battery and, in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector of the present disclosure includes an insulation layer and a conductive layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and is located on at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. The insulation layer has a thickness of D1 satisfying 1 μm≤D1≤10 μm. The conductive layer has a thickness of D2 satisfying 200 nm≤D2≤1.5 μm. The insulation layer has a tensile strength greater than or equal to 150 MPa.
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公开(公告)号：US10658673B2
公开(公告)日：2020-05-19
申请号：US16161978
申请日：2018-10-16
发明人： Chengdu Liang , Huafeng Huang , Qisen Huang
IPC分类号： H01M4/66 , H01M10/42 , H01M4/02 , H01M4/62 , H01M4/36 , H01M10/0525 , H01M10/056 , H01M4/04
摘要： A battery is provided in the present disclosure. The battery includes: a positive electrode plate including a positive current collector and a positive active material layer; a negative electrode plate including a positive current collector and a negative active material layer; and an electrolyte. The positive current collector includes an insulation layer used to support a conductive layer and the conductive layer used to support the positive active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 which satisfies: 300 nm≤D2≤2 μm. A protective layer is arranged on at least one surface of the conductive layer. The negative current collector is a copper foil current collector having a thickness of 6 μm to 12 μm.
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