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11.发明公开公开(公告)号：US20230223521A1
公开(公告)日：2023-07-13
申请号：US18108515
申请日：2023-02-10
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Chengdu LIANG , Yongchao LIU , Na LIU , Yingjie GUAN , Qisen HUANG , Wei FU
CPC classification number: H01M4/366 , H01M4/5825 , H01M4/525 , H01M4/505 , H01M4/131 , C01G53/50 , C01P2004/51
Abstract: The present invention relates to an electrode active material, a preparation method thereof, an electrode, a battery, and an apparatus. The electrode active material includes: a core and a coating layer, where the core includes a ternary material, the coating layer coats the core, the coating layer includes a reaction product of a sulfur-containing compound and a lithium-containing compound, and the reaction product includes element Li, element S, and element O.
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Patent Agency Ranking
12.发明申请公开(公告)号：US20210175499A1
公开(公告)日：2021-06-10
申请号：US17140088
申请日：2021-01-03
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Yingjie GUAN , Yuzhen ZHAO , Yan WEN , Qisen HUANG
IPC: H01M4/48 , H01M4/04 , H01M10/0525 , H01M4/38 , H01M4/36
Abstract: The present application provide a silicon-oxygen compound, a preparation method thereof and related secondary battery, battery module, battery pack, and device. The silicon-oxygen compound provided by the present application has a formula of SiOx, in which x satisfies 0
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13.发明公开公开(公告)号：US20230163284A1
公开(公告)日：2023-05-25
申请号：US18095582
申请日：2023-01-11
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Yingjie GUAN , Yuzhen ZHAO , Qingyan MA , Yan WEN , Qisen HUANG , Fenggang ZHAO
IPC: H01M4/38 , H01M4/485 , H01M4/36 , H01M4/04 , H01M10/0525
CPC classification number: H01M4/386 , H01M4/485 , H01M4/366 , H01M4/0471 , H01M10/0525 , H01M2004/021
Abstract: This application provides a modified silicon material with a core-shell structure, a method for preparing a modified silicon material, a negative electrode active material, a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The modified silicon material with a core-shell structure includes an inner core, a first coating layer that wraps the inner core, and a second coating layer that wraps the first coating layer, where the inner core is elemental silicon and/or a silicon alloy; the first coating layer includes a silicon-oxygen compound; the second coating layer includes lithium fluoride, lithium carbonate, and carbon; and a weight ratio of element lithium to element carbon in the modified silicon material is 6% to 52%. The modified silicon material of this application has high gram capacity and sound conductivity, so that a battery has high first-cycle coulombic efficiency and sound cycling performance.
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公开(公告)号：US20220153598A1
公开(公告)日：2022-05-19
申请号：US17586725
申请日：2022-01-27
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Yuzhen ZHAO , Yingjie GUAN , Yan WEN , Qisen HUANG
Abstract: 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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15.发明申请公开(公告)号：US20220140328A1
公开(公告)日：2022-05-05
申请号：US17059423
申请日：2020-07-22
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Yingjie GUAN , Yuzhen ZHAO , Yan WEN , Qisen HUANG
Abstract: The present application provide a silicon-oxygen compound, a secondary battery using it, and related battery modules, battery packs, and devices. The silicon-oxygen compound provided by the present application has a formula of SiOx, in which x satisfies 0
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公开(公告)号：US20220140325A1
公开(公告)日：2022-05-05
申请号：US17553839
申请日：2021-12-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Chengdu LIANG , Yuzhen ZHAO , Yingjie GUAN , Yan WEN , Qisen HUANG
Abstract: 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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