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公开(公告)号：US10781523B1
公开(公告)日：2020-09-22
申请号：US16837178
申请日：2020-04-01
发明人： Huei-Fang Huang , Yao-Sheng Lai , Jui-Chang Chou
IPC分类号： C25D1/04 , H01M10/0525 , H01M4/66 , H01M4/04 , H01M4/70
摘要： Provided are an electrolytic copper foil, an electrode comprising the same, and a lithium-ion battery comprising the same. The electrolytic copper foil comprises a drum side and a deposited side opposite each other. The drum side and the deposited side each have a Kurtosis (Sku) in a range of 1.8 to 6.4, a developed interfacial area ratio (Sdr) in a range of 0.06% to 13%, and a texture aspect ratio (Str) in a range of 0.1 to 1. With the surface morphology, the electrolytic copper foil has an improved adhesion strength with the active material, and thus improving the charge-discharge cycle life performance of the lithium-ion secondary battery.
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公开(公告)号：US10424793B2
公开(公告)日：2019-09-24
申请号：US15812738
申请日：2017-11-14
发明人： Kuei-Sen Cheng , Huei-Fang Huang , Yao-Sheng Lai , Jui-Chang Chou
IPC分类号： H01M4/70 , H01M4/66 , H01M10/0525 , C25D3/38 , H01M10/0585 , C25D7/06
摘要： An electrodeposited copper foil of high toughness having a lightness L* value of the deposit side in the range of 36 to 74, the copper foil having a tensile strength in the range of 40 to 70 kg/mm2, and a weight deviation of less than 3%. The electrodeposited copper foils are particularly useful as current collectors for anode components of rechargeable secondary batteries and tend not to form wrinkles during charge-discharge cycles of the battery and are resistant to fracture during pressing of the anode active materials onto the copper foil. Secondary batteries and methods of manufacture are also described.
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公开(公告)号：US11283080B2
公开(公告)日：2022-03-22
申请号：US17259333
申请日：2020-01-15
IPC分类号： H01M4/66 , H01M4/04 , H01M10/0525 , H01M4/70 , C25D1/04 , C25D3/04 , C25D3/12 , C25D3/22 , C25D3/38 , C25D5/14 , C25D5/16 , C25D5/48 , C25D5/10 , B32B15/01 , B32B15/08 , B32B15/20 , H05K1/09 , H05K1/18 , H05K3/38 , H05K1/02 , H01M4/02
摘要： Provided are an electrodeposited copper foil, a current collector, an electrode, and a lithium-ion secondary battery comprising the same. The electrodeposited copper foil has a deposited side and a drum side opposite the deposited side. In a first aspect, ΔRS between the deposited side and the drum side is at most about 95 MPa, and the deposited side exhibits a Vv in a range from about 0.15 μm3/μm2 to about 1.35 μm3/μm2. In a second aspect, the deposited side has a Sku of about 1.5 to about 6.5 and the deposited side exhibits a Vv in a range from about 0.15 μm3/μm2 to about 1.35 μm3/μm2. The characteristics are beneficial to improve the quality of the electrodeposited copper foil, thereby extending the charge-discharge cycle life of a lithium-ion secondary battery comprising the same.
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公开(公告)号：US10975487B1
公开(公告)日：2021-04-13
申请号：US16746054
申请日：2020-01-17
发明人： Huei-Fang Huang , Yao-Sheng Lai , Jui-Chang Chou
IPC分类号： C25D7/04 , C25D1/04 , H01M10/0525 , H01M4/66 , H01M4/70
摘要： Provided are an electrolytic copper foil, and an electrode and a copper-clad laminate comprising the same. The electrolytic copper foil comprises a base copper layer having a drum side and a deposited side; wherein the electrolytic copper foil has a Charpy impact strength from 0.4 J/mm2 to 5.8 J/mm2.
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公开(公告)号：US10697082B1
公开(公告)日：2020-06-30
申请号：US16538070
申请日：2019-08-12
发明人： Huei-Fang Huang , Kuei-Sen Cheng , Jui-Chang Chou
摘要： The present disclosure relates to an improved, surface-treated copper foil that is resistant to rusting and discoloration. More specifically, the surface-treated copper foil is chromium-free and includes: (a) a copper foil; optionally, (b) a barrier layer on one or both sides of the copper foil, the barrier layer comprising Ni, Zn, Co, Mn, Sn or a mixture thereof; and (c) an organic layer coupled to the one or both sides of the copper foil or one or both barrier layer(s), wherein the sum total of the N, S, and Si elements of the organic layer is more than 5 normalized atomic %.
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公开(公告)号：US10665865B2
公开(公告)日：2020-05-26
申请号：US16403473
申请日：2019-05-03
发明人： Huei-Fang Huang , Kuei-Sen Cheng , Jui-Chang Chou , Yao-Sheng Lai
摘要： The present disclosure provides an electrodeposited copper foil having a puncture strength value and a tear strength value. A ratio of the puncture strength value to the tear strength value is from 14 to 64. The present disclosure also provides a lithium-ion secondary battery. The lithium-ion secondary battery is manufactured by using the electrodeposited copper foil and has excellent charge-discharge cycle life.
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公开(公告)号：US10205170B1
公开(公告)日：2019-02-12
申请号：US15782494
申请日：2017-12-04
发明人： Huei-Fang Huang , Kuei-Sen Cheng , Yao-Sheng Lai , Jui-Chang Chou
摘要： Electrodeposited copper foils having adequate puncture strength to withstand both pressure application during consolidation with negative electrode active materials during manufacture, as well as expansion/contraction during repeated charge/discharging cycles when used in a rechargeable secondary battery are described. These copper foils find specific utility as current collectors in rechargeable secondary batteries, particularly in lithium secondary battery with high capacity. Methods of making the copper foils, methods of producing negative electrode for use in lithium secondary battery and lithium secondary battery of high capacity are also described.
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公开(公告)号：US09647272B1
公开(公告)日：2017-05-09
申请号：US14995950
申请日：2016-01-14
发明人： Kuei-Sen Cheng , Yao-Sheng Lai , Hsi-Hsing Lo , Huei-Fang Huang
IPC分类号： H01M4/133 , H01M10/052 , H01M4/66 , C25D3/56 , C25D7/00 , H01M10/0525 , H01M4/04 , H01M4/1393 , H01M4/02
CPC分类号： H01M4/667 , C25D1/04 , C25D3/38 , C25D3/565 , C25D7/0614 , H01M4/133 , H01M4/661 , H01M4/662 , H01M10/0525
摘要： The present disclosure relates to a surface-treated copper foil which exhibits excellent affinity for an active material layer that is applied to the copper foil in the manufacture of a negative electrode (anode), for use in secondary lithium-ion batteries. The copper foil is plated with chromium and zinc and subsequently subjected to an organic treatment. The surface-treated copper has a surface tension of 34 to 58 dyne/cm and a surface roughness (Rz) of 0.8 to 2.5 μm, and comprises: (a) copper foil; (b) a zinc-chromium layer plated one or both sides of the copper foil, wherein the zinc content in the zinc-chromium layer is from 10 to 120 μg/dm2 and the chromium content in the zinc-chromium layer is from 10 to 35 μg/dm2; and (c) an organic hydrophobic layer applied to the zinc-chromium layer.
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公开(公告)号：US11962014B2
公开(公告)日：2024-04-16
申请号：US16222066
申请日：2018-12-17
发明人： Huei-Fang Huang , Kuei-Sen Cheng , Yao-Sheng Lai , Jui-Chang Chou
CPC分类号： H01M4/661 , C25D1/04 , C25D3/38 , C25D7/0614 , C25D7/0642 , H01M4/045 , H01M4/38 , H01M10/052 , H01M2004/027 , H01M2220/20 , Y10T428/12431
摘要： Electrodeposited copper foils having adequate puncture strength to withstand both pressure application during consolidation with negative electrode active materials during manufacture, as well as expansion/contraction during repeated charge/discharging cycles when used in a rechargeable secondary battery are described. These copper foils find specific utility as current collectors in rechargeable secondary batteries, particularly in lithium secondary battery with high capacity. Methods of making the copper foils, methods of producing negative electrode for use in lithium secondary battery and lithium secondary battery of high capacity are also described.
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10.发明授权公开(公告)号：US11362337B2
公开(公告)日：2022-06-14
申请号：US17260405
申请日：2020-01-15
发明人： Huei-Fang Huang , Chih-Chung Wu , Yao-Sheng Lai , Jui-Chang Chou
IPC分类号： B32B15/00 , H01M4/66 , H01M4/04 , H01M10/0525 , C25D1/04 , H01M4/70 , B32B15/01 , B32B15/08 , B32B15/20 , C25D3/04 , C25D3/12 , C25D3/22 , C25D3/38 , C25D5/14 , C25D5/16 , C25D5/48 , H05K1/09 , H05K1/18 , H05K3/38 , C25D5/10 , H05K1/02 , H01M4/02
摘要： Provided are an electrodeposited copper foil, an electrode comprising the same, and a lithium-ion secondary battery comprising the same. The electrodeposited copper foil has a drum side and a deposited side opposing the drum side, wherein at least one of the drum side and the deposited side exhibits a void volume value (Vv) in the range of 0.17 μm3/μm2 to 1.17 μm3/μm2; and an absolute value of a difference between a maximum height (Sz) of the drum side and a Sz of the deposited side is in the range of less than 0.60 μm.
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