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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：US20230130685A1
公开(公告)日：2023-04-27
申请号：US17970259
申请日：2022-10-20
发明人： Min Kyung Seon , Gwi Ok Park , Seok Keun Yoo , Dong Gun Lee , Jun Soo Son , Ju Ho Chung
摘要： Provided are a binder composition for a secondary battery, a negative electrode including the same, and a secondary battery including the same. More particularly, the binder composition for a secondary battery having a three-dimensional structure, which is prepared by mixing a copolymer having specific repeating units and a polymer-type additive containing nitrogen (N) bonded to two or three carbons (C) in the repeating unit, has excellent mechanical properties and may effectively improve a binding force. The negative electrode and the secondary battery including the binder composition for a secondary battery effectively suppress expansion of a negative electrode to manufacture a secondary battery having excellent charge/discharge cycle characteristics and battery performance.
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3.发明授权公开(公告)号：US11177507B2
公开(公告)日：2021-11-16
申请号：US16658222
申请日：2019-10-21
发明人： Sung Yon Oh , In Haeng Cho , Dong Gun Lee , Jin Haek Yang
IPC分类号： H01M10/0567 , H01M10/052 , H01M10/0568 , H01M10/0569
摘要： Provided is an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a cyclic phosphate compound represented by the following Chemical Formula 2: wherein R1 to R6 and R′ and R″ are independently of one another hydrogen or C1-C7 alkyl; L2 is —(CR7R8)n—; R7 and R8 are independently of each other hydrogen or C1-C7 alkyl; and n is an integer of 1 to 3. Also provided is a lithium secondary battery including the electrolyte.
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公开(公告)号：US20230187641A1
公开(公告)日：2023-06-15
申请号：US18078214
申请日：2022-12-09
发明人： Dong Gun Lee , Gwi Ok Park , Seok Keun Yoo , Min Kyung Seon , Jun Soo Son , Ju Ho Chung
IPC分类号： H01M4/62 , C08F216/06 , C08F220/06 , C08K5/17
CPC分类号： H01M4/622 , C08F216/06 , C08F220/06 , C08K5/17
摘要： Provided are a novel binder for a secondary battery including a copolymer containing specific repeating units, and a binder composition for a secondary battery including the binder for a secondary battery and a compound containing an amine group and a hydroxyl group. When the binder for a secondary battery or the binder composition for a secondary battery is applied to a negative electrode and a secondary battery, expansion of the negative electrode is effectively suppressed, and the charge/discharge cycle characteristics and the performance of the secondary battery are significantly improved. Furthermore, the binder for a secondary battery has improved coatability and adhesion to effectively suppress the exfoliation and desorption of the negative electrode, thereby improving the performance of the secondary battery.
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公开(公告)号：US20230127580A1
公开(公告)日：2023-04-27
申请号：US17970377
申请日：2022-10-20
发明人： Dong Gun Lee , Gwi Ok Park , Seok Keun Yoo , Min Kyung Seon , Ji Sang Jeong , Ju Ho Chung , Jun Soo Son
IPC分类号： H01M4/62 , H01M4/587 , H01M4/36 , C08F116/06
摘要： Provided are a binder for a secondary battery, a negative electrode including the same, and a secondary battery including the same. More particularly, the binder for a secondary battery including a crosslinked product of a copolymer with a silane-based crosslinking agent according to the present invention may have excellent thermal resistance and mechanical properties and effectively improve a binding force, and the negative electrode for a secondary battery and the secondary battery including the same may effectively suppress expansion of a negative electrode to improve charge/discharge cycle characteristics and performance of the secondary battery.
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6.发明申请公开(公告)号：US20220029200A1
公开(公告)日：2022-01-27
申请号：US17495864
申请日：2021-10-07
发明人： Sung Yon Oh , In Haeng Cho , Dong Gun Lee , Jin Haek Yang
IPC分类号： H01M10/0567 , H01M10/052 , H01M10/0569 , H01M10/0568
摘要： Provided is an electrolyte for a secondary battery including a lithium salt, a nonaqueous organic solvent, and a cyclic phosphate compound, and a lithium secondary battery including the electrolyte.
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公开(公告)号：US20240136527A1
公开(公告)日：2024-04-25
申请号：US18378497
申请日：2023-10-10
发明人： Jun Soo Son , Min Kyung Seon , Dong Gun Lee , Kwang Ho Jung , Seung Deok Seo
IPC分类号： H01M4/62 , H01M4/38 , H01M4/583 , H01M10/052
CPC分类号： H01M4/622 , H01M4/386 , H01M4/583 , H01M10/052 , H01M2004/027
摘要： Provided is a binder for a secondary battery including a copolymer including repeating units of the Chemical Formula 1, Chemical Formula 2, Chemical Formula 3, and Chemical Formula 4 disclosed herein. When the binder for a secondary battery is applied to a negative electrode and a secondary battery, expansion of the negative electrode may be effectively suppressed. Furthermore, the binder for a secondary battery has improved adhesion to effectively suppress exfoliation and desorption of a negative electrode, thereby manufacturing a secondary battery having significantly improved charge/discharge cycle characteristics and battery performance by using the binder.
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公开(公告)号：US20230131939A1
公开(公告)日：2023-04-27
申请号：US17970435
申请日：2022-10-20
发明人： Dong Gun Lee , Gwi Ok Park , Jun Soo Son , Seok Keun Yoo , Ju Ho Chung
摘要： Provided are a binder for a secondary battery, a negative electrode including the same, and a secondary battery including the same. More particularly, the binder for a secondary battery prepared by reacting a copolymer including specific repeating units and a crosslinking agent including two or more aldehyde groups has excellent mechanical properties and effectively improves a binding force. The negative electrode and the secondary battery including the binder for a secondary battery effectively suppress expansion of a negative electrode to manufacture a secondary battery having excellent charge/discharge cycle characteristics and battery performance.
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公开(公告)号：US20220173400A1
公开(公告)日：2022-06-02
申请号：US17536242
申请日：2021-11-29
发明人： Joon-Sup Kim , Gwi Ok Park , Ji Sang Jeong , Min Kyung Seon , Dong Gun Lee , Sun Young Kim
摘要： The present invention relates to a binder for an anode for a secondary battery, an anode including the binder, and a secondary battery including the anode. More particularly, the present invention relates to a binder for an anode for a secondary battery that has excellent heat resistance and mechanical properties and an improved binding force because a copolymer is used for the binder, and an anode for a secondary battery. In addition, expansion and shrinkage of the anode may be efficiently suppressed, such that charge and discharge life characteristics and performance of the secondary battery may be improved.
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10.发明申请公开(公告)号：US20210313622A1
公开(公告)日：2021-10-07
申请号：US17220114
申请日：2021-04-01
发明人： In Haeng Cho , Dong Gun Lee , Joo Hyun Lee , Sung Jin Kim
IPC分类号： H01M10/0567 , H01M10/0525 , H01M10/0569 , H01M10/0568 , C07C309/67 , C07F9/06
摘要： An electrolyte for a lithium secondary battery according to exemplary embodiments of the present inventing includes an organic solvent, a lithium salt, a first additive represented by a predetermined chemical formula, and a second additive represented by a predetermined chemical formula. A protective film is formed by the additives to suppress an expansion of a lithium secondary battery and improve storage property at high temperature.
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