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公开(公告)号：US20220209226A1
公开(公告)日：2022-06-30
申请号：US17697930
申请日：2022-03-18
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Cheng LI , Qisen HUANG , Xin LIU , Changliang SHENG , Shiwen WANG , Xianghui LIU , Jia PENG , Mingling LI , Chengdu LIANG
Abstract: This application relates to a negative electrode plate, a secondary battery and apparatus thereof. The secondary battery of the present application comprises a negative electrode plate, the negative electrode plate comprises a composite current collector and a negative electrode active material layer disposed on at least one surface of the composite current collector, the negative electrode active material layer comprises a silicon-based active material, the silicon-based active material accounts for 0.5 wt % to 50 wt % of total mass of the negative electrode active material layer, and the composite current collector comprises a polymer support layer and a metal conductive layer disposed on at least one surface of the polymer support layer, and the composite current collector has a brittleness parameter C ranging from 0.03 to 0.5. The secondary battery and the negative electrode plate achieve good coordination between the current collector and the negative electrode active material layer.
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2.发明公开公开(公告)号：US20240141532A1
公开(公告)日：2024-05-02
申请号：US18540081
申请日：2023-12-14
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jia PENG , Mingling LI , Xin LIU , Qisen HUANG
Abstract: A negative electrode composite current collector including a copper plating solution is described. The copper plating solution includes a leveling agent represented by a general formula (1)
where an anion X is F−, Cl−, or Br−;
R1, R2, and R3 are each independently selected from O or S; and
R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.-
公开(公告)号：US20230112962A1
公开(公告)日：2023-04-13
申请号：US17984276
申请日：2022-11-10
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jia PENG , Mingling LI , Xin LIU , Qisen HUANG
Abstract: The present disclosure relates to a composite positive electrode current collector. On a surface of an insulation layer, a protective layer, a graphene metallization layer and a conductive layer may be arranged in sequence; and the protective layer may comprise a metal oxide, and the graphene metallization layer may contain highly reduced graphene oxide having an oxygen-containing organic group.
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公开(公告)号：US20240274836A1
公开(公告)日：2024-08-15
申请号：US18626100
申请日：2024-04-03
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Mingling LI , Xin LIU , Qisen HUANG , Xianghui LIU , Cheng LI
Abstract: A composite current collector includes a first metal layer, a second metal layer, and a first binding layer. The first metal layer includes a first body zone and a first tab zone. The first tab zone is located at an end of the first metal layer. The second metal layer includes a second body zone and a second tab zone. The second tab zone is located at an end of the second metal layer. The first body zone and the second body zone are connected through the first binding layer. The first tab zone has a thickness greater than thickness of the first body zone. The first tab zone extends toward the second tab zone.
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公开(公告)号：US20240190715A1
公开(公告)日：2024-06-13
申请号：US18409940
申请日：2024-01-11
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Xin LIU , Qisen HUANG , Cheng LI , Mingling LI , Xianghui LIU
CPC classification number: C01D15/02 , H01M4/525 , H01M4/625 , C01P2004/03 , C01P2004/61 , C01P2004/84 , C01P2006/40 , H01M2004/028
Abstract: A positive lithium supplement material includes a core, an inorganic coating layer coated on at least part of a surface of the core, and an organic coating layer coated on at least part of a surface of the inorganic coating layer away from the core. The core includes LixMyOz, and the M element includes at least one of Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, or Zn, where 2≤x≤6, 1≤y≤2, 2≤z≤4, and the core is electrically neutral.
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Patent Agency Ranking
公开(公告)号：US20210151770A1
公开(公告)日：2021-05-20
申请号：US17128090
申请日：2020-12-19
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin LIU , Qisen HUANG , Shiwen WANG , Xianghui LIU , Jia PENG , Mingling LI , Changliang SHENG
IPC: H01M4/66 , H01M10/0525 , H01M4/04
Abstract: The present disclosure provides a lithium ion secondary battery, a battery core, a negative electrode plate and an apparatus containing the lithium ion secondary battery. The lithium ion secondary battery includes a battery core and an electrolytic solution, the battery core including a positive electrode plate comprising a positive current collector and a positive active material layer, a separator, and a negative electrode plate comprising a negative current collector and a negative active material layer, wherein the positive current collector and/or the negative current collector are a composite current collector, the composite current collector comprises a polymer-based support layer and a conductive layer disposed on at least one surface of the support layer, and the composite current collector has a thermal conductivity in a range of 0.01 W/(m·K) to 10 W/(m·K), preferably in a range of 0.1 W/(m·K) to 2 W/(m·K).
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公开(公告)号：US20240113288A1
公开(公告)日：2024-04-04
申请号：US18523929
申请日：2023-11-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Cheng LI , Qisen HUANG , Xin LIU , Changliang SHENG , Shiwen WANG , Xianghui LIU , Jia PENG , Mingling LI , Chengdu LIANG
CPC classification number: H01M4/382 , H01M4/0404 , H01M4/0421 , H01M4/583 , H01M4/663 , H01M4/667 , H01M4/668 , H01M2004/027
Abstract: This application relates to a negative electrode plate, a secondary battery and apparatus thereof. The secondary battery of the present application comprises a negative electrode plate, the negative electrode plate comprises a composite current collector and a negative electrode active material layer disposed on at least one surface of the composite current collector, the negative electrode active material layer comprises a silicon-based active material, the silicon-based active material accounts for 0.5 wt % to 50 wt % of total mass of the negative electrode active material layer, and the composite current collector comprises a polymer support layer and a metal conductive layer disposed on at least one surface of the polymer support layer. The secondary battery and the negative electrode plate achieve good coordination between the current collector and the negative electrode active material layer.
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8.发明公开公开(公告)号：US20230187655A1
公开(公告)日：2023-06-15
申请号：US18069586
申请日：2022-12-21
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Mingling LI , Jia PENG , Xin LIU , Qisen HUANG , Keqiang LI , Cheng LI , Xianghui LIU
CPC classification number: H01M4/667 , H01M4/82 , H01M4/661 , H01M4/668 , H01M2004/021
Abstract: A composite current collector includes a support layer and a conductive layer. The support layer has two surfaces opposite to each other along a thickness direction. The conductive layer is provided on the two surfaces and includes a first portion and a second portion. The first portion includes a first sub-portion and a second sub-portion provided on the two surfaces, respectively. The second portion includes a third sub-portion and a fourth sub-portion. The third sub-portion and the first sub-portion are integrally provided. The fourth sub-portion and the second sub-portion are integrally provided. The third sub-portion and the fourth sub-portion both project from the support layer. The third sub-portion and the fourth sub-portion are affixed to each other and fused as a whole.
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9.发明申请公开(公告)号：US20230132206A1
公开(公告)日：2023-04-27
申请号：US17901101
申请日：2022-09-01
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jia PENG , Mingling LI , Xin LIU , Qisen HUANG
Abstract: This application provides a copper plating solution for a composite current collector, including a leveling agent represented by a general formula (1) where an anion X is F−, Cl−, or Br−; R1, R2, and R3 are each independently selected from O or S; and R4, R5, and R6 are each independently selected from hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted vinyl, a substituted or unsubstituted aryl, and a substituted or unsubstituted heteroaryl.
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10.发明申请公开(公告)号：US20220085380A1
公开(公告)日：2022-03-17
申请号：US17537516
申请日：2021-11-30
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Xin LIU , Qisen HUANG , Shiwen WANG , Changliang SHENG , Jia PENG , Mingling LI , Xianghui LIU
Abstract: The present application discloses a negative electrode current collector, a negative electrode plate and an electrochemical device. The negative electrode current collector includes an organic support layer and a copper-based conductive layer disposed on at least one surface of the organic support layer; and a copper-based crystal grain size in the copper-based conductive layer is from 10 nm to 500 nm. The negative electrode current collector provided by the present application has good mechanics properties while having less weight and good electrical conductivity and current collection performance, which can improve preparation yields of the negative electrode current collector, the negative electrode plate and the electrochemical device and their safety and reliability during use, and enables the electrochemical device to have relatively high gravimetric energy density and good electrochemical performance.
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