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1.发明公开
公开(公告)号：EP3968428A1
公开(公告)日：2022-03-16
申请号：EP21195848.3
申请日：2021-09-09
发明人： KWON, Tae Wook , BAE, Heung Taek , LEE, Dong Yeon , KIM, Yun Bong
IPC分类号： H01M10/052 , H01M50/403 , H01M50/42 , H01M50/446 , H01M50/449
摘要： Provided is a separator for a lithium secondary battery including a porous substrate and a coating layer including a binder and inorganic particles formed on one surface or both surfaces of the porous substrate, wherein the binder is a binder including: (a) a (meth)acrylamide-based monomer polymerization unit, (b) a (meth)acryl-based monomer polymerization unit containing a hydroxyl group, and (c) a polyfunctional (meth)acrylamide-based monomer polymerization unit. The separator according to the present invention provides a separator for a lithium secondary battery having improved adhesive strength between the inorganic particles and the separator, showing a decreased interfacial resistance characteristic, and showing an improved air permeability.
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2.发明公开
公开(公告)号：EP4290668A1
公开(公告)日：2023-12-13
申请号：EP23178484.4
申请日：2023-06-09
IPC分类号： H01M50/403 , H01M10/0525 , H01M50/443 , H01M50/446 , H01M50/449 , H01M50/489
摘要： Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, △P, represented by the following Equation (1) is 1.1 or more may be provided: Δ P = P 1 / P 2 wherein
P 1 is peel strength of the separator,
P 2 is peel strength of a separator including a porous substrate and an inorganic particle layer which is provided on at least one surface of the porous substrate and includes boehmite particles and a hydrolytic condensate of (3-aminopropyl)triethoxysilane, and
the peel strength is measured by adhering a double-sided tape having a width of 15 mm and a length of 60 mm from one end in a length direction on a copper plate having a thickness of 200 µm, a width of 15 mm, and a length of 100 mm, adhering the separator thereon by stacking and pressing so that the tape faces the inorganic particle layer of the separator, and using UTM equipment to perform a 180° peel test under conditions of a speed of 300 mm/min and a displacement of 100 mm.-
3.发明公开
公开(公告)号：EP4290666A1
公开(公告)日：2023-12-13
申请号：EP23178446.3
申请日：2023-06-09
发明人： KWON, Tae Wook , BAE, Heung Taek
IPC分类号： H01M50/403 , H01M50/443 , H01M50/446 , H01M50/449 , H01M50/489 , H01M10/0525
摘要： Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment of the present disclosure, a separator including: a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate may be provided, wherein a value of the following Formula (1) is 0.135 or more: BDV / t wherein BDV is a voltage (kV) when a leakage current value is 5 mA, the voltage being measured in accordance with ASTM D 149 and the leakage current value being measured under conditions of raising an applied voltage at 5 kV/10 sec after placing the separator between electrodes of a withstand voltage tester, and t is an overall average thickness (µm) of the separator.
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4.发明公开
公开(公告)号：EP4071918A1
公开(公告)日：2022-10-12
申请号：EP22166576.3
申请日：2022-04-04
发明人： KWACK, Won Sub , LEE, Sang Ick , KWON, Tae Wook , KIM, Yun Bong , BAE, Heung Taek , JI, Sang Yoon
IPC分类号： H01M50/446 , H01M50/449 , H01M10/0525
摘要： Provided are a separator for a secondary battery, a method for manufacturing the same, and a lithium secondary battery including the same, and particularly, a separator for a secondary battery which has sufficient thermal resistance and mechanical properties even without using a polymer-based organic binder lacking chemical stability, by adopting a metal alkanoate having a polar group as a binder for binding among particles forming a porous active layer and also between the porous active layer and a porous substrate, a method for manufacturing the same, and a lithium secondary battery including the same are provided.
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5.发明公开
公开(公告)号：EP4300696A3
公开(公告)日：2024-03-27
申请号：EP23178461.2
申请日：2023-06-09
IPC分类号： H01M50/403 , H01M10/0525 , H01M50/443 , H01M50/446 , H01M50/489 , H01M10/052 , H01M50/417 , H01M50/431 , H01M50/434 , H01M50/449 , H01M50/451
摘要： The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment of the present invention, a separator includes: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound, and the separator satisfies the following Relation (1): T 1 − T 0 ≥ 30 % wherein T 0 is a light transmittance measured by allowing the separator to stand at 25°C for 1 hour and then vertically spacing the separator apart from a halogen lamp with a rated voltage of 12 V and a power consumption of 50 W by 100 mm, and T 1 is a light transmittance measured by allowing the separator to stand at 150°C for 1 hour and then vertically spacing the separator apart from a halogen lamp with a rated voltage of 12 V and a power consumption of 50 W by 100 mm.
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6.发明公开
公开(公告)号：EP4290667A1
公开(公告)日：2023-12-13
申请号：EP23178457.0
申请日：2023-06-09
IPC分类号： H01M50/403 , H01M50/443 , H01M50/446 , H01M50/449 , H01M50/489
摘要： Provided are a separator for a secondary battery, a method of manufacturing the separator, and a secondary battery including the separator. According to an exemplary embodiment of the present disclosure, a separator including: a porous substrate and an inorganic particle layer formed on at least one surface of the porous substrate, wherein a heat shrinkage rate S of the separator in a battery, represented by the following Equation (1) is 8% or less may be provided: S = A 1 − A 2 / A 1 ∗ 100 wherein
A 1 is a length in a width direction of the separator, and
A 2 is a length in a width direction of a separator, the separator being obtained by allowing a secondary battery including a negative electrode, a positive electrode, an electrolyte solution, and the separator to stand at 150°C for 60 minutes, cooling the secondary battery to room temperature, and then disassembling the secondary battery.-
公开(公告)号：EP3958364A1
公开(公告)日：2022-02-23
申请号：EP21192224.0
申请日：2021-08-19
发明人： KIM, Sun Young , KWON, Tae Wook , BAE, Heung Taek , LEE, Dong Gun , KIM, Yun Bong , SEON, Min Kyung
IPC分类号： H01M10/0525 , H01M50/409 , H01M50/414 , H01M50/42 , H01M50/423 , H01M50/431 , H01M50/446 , H01M50/449
摘要： Provided are a composite separator including a coating layer including inorganic particles and a binder formed on a porous substrate, which has improved coatability and improved thermal shrinkage, and a lithium secondary battery using the same.
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8.发明公开
公开(公告)号：EP4379883A1
公开(公告)日：2024-06-05
申请号：EP23213006.2
申请日：2023-11-29
发明人： KWON, Tae Wook , BAE, Heung Taek
IPC分类号： H01M10/052 , H01M50/403 , H01M50/423 , H01M50/446 , H01M50/449 , H01M50/489
CPC分类号： H01M50/489 , H01M50/403 , H01M50/446 , H01M50/449 , H01M50/423 , H01M10/052
摘要： Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment, a separator including: a porous substrate; and an inorganic particle layer including a binder and inorganic particles on at least one surface of the porous substrate may be provided, wherein the binder is a water-soluble binder including a (meth)acrylamide-based monomer polymerization unit and the separator has a value of the following Formula (1) satisfying 0.15 or more: BDV/t wherein
'BDV' is a voltage (kV) measured in accordance with ASTM D 3755, when a leakage current value is 5 mA, measured under conditions of raising an applied voltage at 5 kV/10 sec after placing the separator between electrodes of a withstand voltage tester(Hipot Tester), and
't' is an overall average thickness (um) of the separator.-
9.发明公开
公开(公告)号：EP4340114A1
公开(公告)日：2024-03-20
申请号：EP23196999.9
申请日：2023-09-12
发明人： KWON, Tae Wook , LEE, Sang Ick , KWACK, Won Sub , KIM, Cheol Woo , KWAK, Hyo Shin , BAE, Heung Taek
IPC分类号： H01M50/446
摘要： Provided are a separator coating composition for a secondary battery including inorganic particles and a silane salt compound having a specific structure, a separator using the same, and an electrochemical device including the same. Specifically, provided is a separator coating composition for a secondary battery which implements adhesion between an inorganic material layer and a porous substrate without the need of including an acid and/or a polymer-based organic binder in a coating composition for forming the inorganic material layer on one or both surfaces of the porous substrate, and which does not need a separate acidic dispersing agent for dispersing the inorganic particles. A separator manufactured using the separator coating composition, and an electrochemical device including the separator are also provided.
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10.发明公开
公开(公告)号：EP4300696A2
公开(公告)日：2024-01-03
申请号：EP23178461.2
申请日：2023-06-09
IPC分类号： H01M50/403 , H01M10/0525 , H01M50/443 , H01M50/446 , H01M50/489
摘要： The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment of the present invention, a separator includes: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound, and the separator satisfies the following Relation (1): T 1 − T 0 ≥ 30 % wherein T 0 is a light transmittance measured by allowing the separator to stand at 25°C for 1 hour and then vertically spacing the separator apart from a halogen lamp with a rated voltage of 12 V and a power consumption of 50 W by 100 mm, and T 1 is a light transmittance measured by allowing the separator to stand at 150°C for 1 hour and then vertically spacing the separator apart from a halogen lamp with a rated voltage of 12 V and a power consumption of 50 W by 100 mm.
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