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公开(公告)号：EP4131623A1
公开(公告)日：2023-02-08
申请号：EP21783718.6
申请日：2021-04-06
发明人： KIM, Ji-Eun , LEE, Sang-Young , JEONG, So-Mi , SEO, Ji-Young , LEE, Yong-Hyeok , LEE, Je-An
IPC分类号： H01M50/449 , H01M50/446 , H01M10/0525
摘要： The present disclosure relates to a separator for an electrochemical device provided with a porous coating layer including multiple types of binder resins, and a method for manufacturing the same. The separator shows high adhesion between an electrode and the separator, even when any separate adhesive layer is not disposed on the surface of the separator. In addition, the separator shows higher adhesion to an electrode, as compared to a separator using a fluorinated binder resin, such as polyvinylidene fluoride, used conventionally in the art. Therefore, when introducing the separator to a battery, it is possible to manufacture an electrode assembly under a mild temperature and pressure condition, to improve the productivity of assemblage, to reduce defect generation, and thus to increase the yield. In addition, since the separator has no separate adhesive layer, it is possible to provide low interfacial resistance between the separator and an electrode. Further, the separator shows high affinity to an electrolyte, as compared to a semi-crystalline polymer, such as a fluorinated binder resin, and thus improves the output characteristics of a battery.
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公开(公告)号：EP4170806A1
公开(公告)日：2023-04-26
申请号：EP21883211.1
申请日：2021-10-19
发明人： HAN, Da-Kyung , LEE, Sang-Young , SEO, Ji-Young , LEE, Yong-Hyeok , LEE, Je-An , JEONG, So-Mi
IPC分类号： H01M50/431 , H01M50/446 , H01M50/449 , H01M10/058 , H01M10/052
摘要： The present disclosure relates to a separator including: a porous polymer substrate; a porous coating layer formed on at least one surface of the porous polymer substrate, and including a plurality of inorganic particles and a first binder polymer disposed totally or partially on the surfaces of the inorganic particles so that the inorganic particles may be interconnected and fixed; and a conductive coating layer formed on one surface of the porous coating layer and including single-walled carbon nanotubes (SWCNTs) and a second binder polymer.
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公开(公告)号：EP4343916A1
公开(公告)日：2024-03-27
申请号：EP23740391.0
申请日：2023-01-05
发明人： LEE, So-Yeong , BAE, Kyeong-Hui , JEONG, So-Mi , BAE, Won-Sik
IPC分类号： H01M10/0583 , H01M10/04 , H01M50/489 , H01M50/451 , H01M10/052 , H01G11/22
摘要： The present disclosure relates to an electrode assembly and an electrochemical device including the same. The electrode assembly includes a unit electrode and a strip-shaped separator being foldable in a zigzag manner, in which the unit electrode is disposed in an overlapped portion of the separator when the separator is folded. The separator includes a porous substrate of a polymeric material and a porous coating layer containing organic particles and provided on each of the upper and lower surfaces of the porous substrate. The thickness (Ts) of the porous substrate gradually decreases towards longitudinal ends from the longitudinal center, the total thickness (Tc) of the porous coating layer gradually increases towards either longitudinal end thereof, and the total thickness (Ts + Tc) is constant across the entire plane of the separator.
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公开(公告)号：EP4203170A1
公开(公告)日：2023-06-28
申请号：EP21895178.8
申请日：2021-11-22
发明人： KIM, Min-Ji , JEONG, So-Mi , HAN, Da-Kyung
IPC分类号： H01M50/446 , H01M50/449 , H01M50/403 , H01M10/058 , H01M10/052 , G01N11/00
摘要： Disclosed is a method for manufacturing a battery. According to the method, a combination of binder ingredient and electrolyte causing low dissolution of polymer may be selected before manufacturing a battery. The binder ingredient, organic solvent or both may be applied to the manufacture of a battery to prevent degradation of adhesion of battery devices, and an increase in resistance caused by an increase in viscosity of an electrolyte.
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5.发明公开
公开(公告)号：EP4007035A1
公开(公告)日：2022-06-01
申请号：EP20855024.4
申请日：2020-08-14
发明人： KIM, Chan-Jong , JEONG, So-Mi
IPC分类号： H01M10/42
摘要： The separator according to the present disclosure and the electrochemical device including the same show low internal resistance between the separator and an electrode. The separator includes heat resistant particles in a heat resistant coating layer, and the heat resistant particles include fluorine (F) doped to the surfaces of inorganic particles. When the internal temperature of a battery is increased during the operation of the battery, the separator shows improved heat resistance by virtue of an endothermic effect derived from a phase change of the heat resistant particles. In addition, decomposition of a lithium salt used as an ingredient of electrolyte is inhibited by the fluorine atoms introduced to the heat resistant particles, resulting in improvement of ion conductivity and resistance characteristics. Further, the separator including the heat resistant particles introduced thereto has excellent resistance characteristics and shows high oxidation stability of an electrolyte, resulting in improvement of the electrochemical stability of a battery.
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公开(公告)号：EP4246699A1
公开(公告)日：2023-09-20
申请号：EP22865061.0
申请日：2022-09-01
发明人： LEE, So-Yeong , JEONG, So-Mi , BAE, Won-Sik , LEE, Jong-Yoon , PARK, So-Jung
IPC分类号： H01M50/403 , H01M50/451 , H01M50/491
摘要： An electrode assembly manufacturing method according to the present disclosure uses a pre-compressed separator substrate. Therefore, a reduction in thickness of the separator by the pressure applied in a lamination process during the manufacture of an electrode assembly is small. For this reason, the separator of the electrode assembly manufactured by the method exhibits high insulation performance and does not experience a decrease in dielectric breakdown voltage. In addition, even though high pressure is applied during the lamination process, damage to the separator is small, and the processing speed is fast, resulting in process efficiency.
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公开(公告)号：EP4203168A1
公开(公告)日：2023-06-28
申请号：EP21862154.8
申请日：2021-08-30
发明人： KIM, Min-Ji , JEONG, So-Mi , HAN, Da-Kyung
IPC分类号： H01M50/446 , H01M50/449 , H01M50/403
摘要： The present disclosure relates to a separator for an electrochemical device, including a porous polymer substrate and an inorganic coating layer formed on at least one surface of the porous polymer substrate, wherein the inorganic coating layer includes inorganic particles and a binder resin, and the binder resin includes a PVAc-based first binder resin and a PVDF-based second binder resin.
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8.发明公开
公开(公告)号：EP4117105A1
公开(公告)日：2023-01-11
申请号：EP21779910.5
申请日：2021-03-31
发明人： JEONG, So-Mi , KIM, Min-Ji , HAN, Da-Kyung
IPC分类号： H01M50/449 , H01M50/446 , H01M10/42 , H01M50/403 , H01M10/052
摘要： The present disclosure relates to a separator for a lithium secondary battery, a method for manufacturing the same, and a lithium secondary battery including the separator. The separator includes a porous polymer substrate having a plurality of pores, and a porous coating layer formed on at least one surface of the porous polymer substrate and including a plurality of inorganic particles and a binder polymer, wherein the binder polymer includes a thermosetting phenolic resin having at least one hydroxyl group and aromatic group. When the separator is exposed to high temperature, due to ignition or the like, the thermosetting phenolic resin in the porous coating layer is thermally cured to form a network structure by virtue of the structural characteristics of the separator. As a result, the separator has improved heat resistance as compared to the conventional separators and shows high adhesion to an electrode.
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9.发明公开
公开(公告)号：EP4037050A1
公开(公告)日：2022-08-03
申请号：EP20877496.8
申请日：2020-10-16
发明人： KIM, Min-Ji , SUNG, Dong-Wook , JEONG, So-Mi
IPC分类号： H01M10/052 , H01G11/52
摘要： Disclosed is a separator which essentially includes inorganic particles and a binder resin, can be used as a free standing type separator including no separator substrate, such as a polymer resin film, and causes no problem of heat shrinking. In addition, the separator has increased tensile strength by virtue of the improvement of the crystallinity of the binder resin through elongation, and shows a small dimensional change after being impregnated with an electrolyte.
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公开(公告)号：EP4287344A1
公开(公告)日：2023-12-06
申请号：EP23740481.9
申请日：2023-01-12
发明人： LEE, So-Yeong , BAE, Won-Sik , KIM, Kyung-Tae , PARK, So-Jung , BAE, Kyeong-Hui , JEONG, So-Mi
IPC分类号： H01M10/0583 , H01M50/46 , H01M50/457 , H01M50/451 , H01M50/489 , H01M10/052
摘要： A separator, an electrode assembly and an electrochemical device including the same are provided. The separator is used for a zigzag stacking-type electrode assembly, and includes a porous substrate made of a polymer material and a porous coating layer formed on opposite surfaces of the porous substrate and containing inorganic particles. A thickness (Ts) of the porous substate decreases gradually from opposite ends toward a central portion based on a longitudinal direction of the separator, a total thickness (Tc) of the porous coating layers increases gradually toward the central portion, and a total thickness (Ts + Tc) of the separator is constant.
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