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公开(公告)号：US20220059903A1
公开(公告)日：2022-02-24
申请号：US17407382
申请日：2021-08-20
发明人： Sun Young Kim , Tae Wook Kwon , Heung Taek Bae , Dong Gun Lee , Yun Bong Kim , Min Kyung Seon
IPC分类号： H01M50/42 , H01M50/449 , H01M50/491 , H01M10/052 , H01M50/431 , C08F20/56 , C08F20/06
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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公开(公告)号：US11183736B2
公开(公告)日：2021-11-23
申请号：US16459334
申请日：2019-07-01
发明人： Kyu Young Cho , Won Sub Kwack , Yun Bong Kim , Hye Jin Kim , Su Ji Lee
IPC分类号： H01M50/446 , H01M50/449 , H01M10/0525
摘要： Provided are a composite separator and an electrochemical device using the same. More specifically, provided is a composite separator including a coating layer for improving an adhesive property between an electrode and a separator.
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23.发明授权公开(公告)号：US11020710B2
公开(公告)日：2021-06-01
申请号：US15628221
申请日：2017-06-20
发明人： Dong Jin Joo , Kyu Young Cho , Yun Bong Kim , Su Ji Lee , Won Sub Kwack , Hye Jin Kim
摘要： Provided is an ultra large-width coating device applied to a consecutive process. More particularly, the present invention relates to a coating device capable of maximizing productivity by consecutively manufacturing a large-width film without reducing physical properties of the manufactured film by overcoming a problem in that a coating width is limited during a coating process using the existing contact type coating roller, and a method for manufacturing an ultra large-width membrane using the same.
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公开(公告)号：US10854863B2
公开(公告)日：2020-12-01
申请号：US16161417
申请日：2018-10-16
发明人： Yun Bong Kim , Su Ji Lee , Kyu Young Cho , Won Sub Kwack , Hye Jin Kim
IPC分类号： H01M2/16 , H01M10/0525 , H01M2/14 , H01M4/62 , C08J5/22
摘要： Provided is a separator for a secondary battery including: a porous substrate; and a coating layer formed on the porous substrate, wherein the coating layer includes a plurality of inorganic particles and a binder for binding the plurality of inorganic particles, and the binder includes a copolymer of a monomer mixture including an acrylamide-based monomer, a vinyl cyanide monomer, and an acrylic monomer having a carboxyl group.
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25.发明申请公开(公告)号：US20200373538A1
公开(公告)日：2020-11-26
申请号：US16769707
申请日：2018-12-04
发明人： Hye Jin Kim , Yun Bong Kim , Suji Lee , Won Sub Kwack , Kyu Young Cho
IPC分类号： H01M2/16 , H01M10/0525
摘要： The present invention relates to: a porous composite separator for a secondary battery including a porous substrate, and a coating layer formed on the porous substrate, wherein the coating layer has a plurality of inorganic particles, which are connected and fixed by a composite binder including a particulate polymer binder and an interpenetrating polymer network (IPN)-type binder having no melting point and having a thermal decomposition temperature of 300° C. or higher; and a lithium secondary battery including the same.
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26.发明申请公开(公告)号：US20170294638A1
公开(公告)日：2017-10-12
申请号：US15484200
申请日：2017-04-11
发明人： Dong Jin Joo , Yun Bong Kim , Su Ji Lee , Kyu Young Cho
IPC分类号： H01M2/16 , H01M10/0525
CPC分类号： H01M2/1686 , H01M2/1653 , H01M2/166 , H01M10/0525
摘要： Provided are a separator for a lithium secondary battery in which an entire thickness of the separator and a ratio of a heat-resistant layer included in the separator satisfy specific ranges, respectively, and a battery including the same. The separator has significantly excellent heat resistance and mechanical strength, and it is possible to manufacture a high capacity and high output battery using the separator, thereby making it possible to significantly improve safety even in the high capacity and the high output battery.
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27.发明授权公开(公告)号：US10333126B2
公开(公告)日：2019-06-25
申请号：US15562534
申请日：2016-04-01
发明人： Dong Jin Joo , Su Ji Lee , Kyu Young Cho , Yun Bong Kim , Jae Woong Kim
IPC分类号： H01M2/16 , H01M2/14 , H01M10/02 , H01M10/0525 , H01M10/42 , H01M10/052
摘要： The present invention relates to a composite separation membrane for a lithium secondary battery having excellent lifetime and safety improvement effects, and a preparation method therefor and, more specifically, to a composite separation membrane for a lithium secondary battery, including: a porous base layer; a heat resistant layer formed on one surface or both surfaces of the porous base layer; and a fusion layer formed on the outermost layer. Inorganic particles in the heat resistant layer are connected and fixed by a binder polymer, and the fusion layer is prepared by comprising amorphous polymer particles having a glass transition temperature of 30 to 90° C. and a difference between a fusion temperature and the glass transition temperature of 60° C. or lower.
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28.发明公开公开(公告)号：US20240059879A1
公开(公告)日：2024-02-22
申请号：US18327170
申请日：2023-06-01
发明人： Jong Sang Park , Yun Bong Kim , Kyu Young Cho , Si Uk Cheon
CPC分类号： C08L23/06 , C08K3/00 , C08L2205/025 , C08L2207/20 , C08L2207/062
摘要： Provided is a polymer composition for blow molding which includes a high-density polyethylene recovered from a secondary battery separator and has excellent mechanical properties. The polymer composition having excellent processability may be prepared by recycling a secondary battery separator, and may be molded to manufacture an environmental small to medium sized container which has excellent mechanical properties such as flexural strength, elongation, and impact strength in a large temperature range and has excellent processing moldability.
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29.发明授权公开(公告)号：US10454087B2
公开(公告)日：2019-10-22
申请号：US15484200
申请日：2017-04-11
发明人： Dong Jin Joo , Yun Bong Kim , Su Ji Lee , Kyu Young Cho
IPC分类号： H01M2/16 , H01M10/0525
摘要： Provided are a separator for a lithium secondary battery in which an entire thickness of the separator and a ratio of a heat-resistant layer included in the separator satisfy specific ranges, respectively, and a battery including the same. The separator has significantly excellent heat resistance and mechanical strength, and it is possible to manufacture a high capacity and high output battery using the separator, thereby making it possible to significantly improve safety even in the high capacity and the high output battery.
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30.发明申请公开(公告)号：US20180114968A1
公开(公告)日：2018-04-26
申请号：US15562534
申请日：2016-04-01
发明人： Dong Jin Joo , Su Ji Lee , Kyu Young Cho , Yun Bong Kim , Jae Woong Kim
IPC分类号： H01M2/16 , H01M2/14 , H01M10/0525 , H01M10/42
CPC分类号： H01M2/1686 , H01M2/145 , H01M2/16 , H01M2/1653 , H01M2/166 , H01M10/02 , H01M10/052 , H01M10/0525 , H01M10/4235 , H01M2220/20 , Y02E60/122
摘要： The present invention relates to a composite separation membrane for a lithium secondary battery having excellent lifetime and safety improvement effects, and a preparation method therefor and, more specifically, to a composite separation membrane for a lithium secondary battery, including: a porous base layer; a heat resistant layer formed on one surface or both surfaces of the porous base layer; and a fusion layer formed on the outermost layer. Inorganic particles in the heat resistant layer are connected and fixed by a binder polymer, and the fusion layer is prepared by comprising amorphous polymer particles having a glass transition temperature of 30 to 90° C. and a difference between a fusion temperature and the glass transition temperature of 60° C. or lower.
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