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公开(公告)号：US11607680B2
公开(公告)日：2023-03-21
申请号：US17057682
申请日：2019-04-29
发明人： Young Woo Choi , Mi Soon Lee , Young Gi Yoon , Tae Young Kim , Min Ho Seo , Beom Jun Kim , Chi Young Jung , Jong Min Lee
IPC分类号： H01M8/18 , B01J43/00 , H01M50/497 , H01M50/414 , H01M50/403 , H01M8/1032 , H01M8/1058 , H01M8/1072
摘要： Disclosed are a micropore-filled amphoteric membrane for low vanadium ion permeability, a method of manufacturing the same, and a vanadium redox flow battery including the amphoteric membrane. The micropore-filled amphoteric membrane for low vanadium ion permeability minimizes crossover of vanadium ions, which occurs between a catholyte and an anolyte in a redox flow battery, and has low membrane resistance and thus has remarkably improved performance as compared to commercially available ion-exchange membranes such as Nafion, and accordingly, can be effectively used in the manufacture of a redox flow battery. In addition, the micropore-filled amphoteric membrane is continuously manufactured through a roll-to-roll process, and thus the manufacturing process is simple and manufacturing costs can be greatly reduced.
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公开(公告)号：US20210197187A1
公开(公告)日：2021-07-01
申请号：US17057682
申请日：2019-04-29
发明人： Young Woo Choi , Mi Soon Lee , Young Gi Yoon , Tae Young Kim , Min Ho Seo , Beom Jun Kim , Chi Young Jung , Jong Min Lee
IPC分类号： B01J43/00 , H01M8/18 , H01M8/1058 , H01M8/1072 , H01M8/1032 , H01M50/403 , H01M50/414 , H01M50/497
摘要： Disclosed are a micropore-filled amphoteric membrane for low vanadium ion permeability, a method of manufacturing the same, and a vanadium redox flow battery including the amphoteric membrane. The micropore-filled amphoteric membrane for low vanadium ion permeability minimizes crossover of vanadium ions, which occurs between a catholyte and an anolyte in a redox flow battery, and has low membrane resistance and thus has remarkably improved performance as compared to commercially available ion-exchange membranes such as Nafion, and accordingly, can be effectively used in the manufacture of a redox flow battery. In addition, the micropore-filled amphoteric membrane is continuously manufactured through a roll-to-roll process, and thus the manufacturing process is simple and manufacturing costs can be greatly reduced.
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公开(公告)号：US20220298318A1
公开(公告)日：2022-09-22
申请号：US17635313
申请日：2020-08-18
发明人： Young Woo Choi
摘要： Provided are a monovalent anion selective ion exchange membrane and a method of manufacturing the ion exchange membrane. In regard to the monovalent anion selective ion exchange membrane, a surface portion thereof has a high amount ratio of a cation exchange polymer electrolyte, a central portion thereof has a high amount ratio of an anion exchange polymer electrolyte, and an amount ratio of the anion exchange polymer electrolyte with respect to the cation exchange polymer electrolyte continuously increases in the thickness direction thereof from the surface toward the center. Due to this structure, compared to monovalent anions, polyvalent anions may permeate much less through the exchange membrane. Thus, high selectivity for monovalent anions may be obtained.
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公开(公告)号：US11975296B2
公开(公告)日：2024-05-07
申请号：US17052518
申请日：2019-04-29
发明人： Young Woo Choi , Mi Soon Lee , Tae Young Kim , Young Gi Yoon , Beom Jun Kim , Min Ho Seo , Chi Young Jung , Jong Min Lee , Nam-jo Jeong , Seung Cheol Yang , Ji Yeon Choi
CPC分类号： B01D69/12 , B01D69/107 , B01D69/125 , B01D2323/286 , B01D2323/30 , B01D2323/345 , B01D2325/42 , B29C2035/0827 , B29C70/504 , C08J5/2218
摘要： A pore-filled ion exchange polyelectrolyte composite membrane from which the surface ion exchange polyelectrolyte has been removed and a method of manufacturing the same are provided. The ion exchange polyelectrolyte composite membrane exhibits low film resistance and low in-plane-direction swelling degree, and has a smaller film-thickness than a commercial film, and thus, can be used for various purposes. In addition, since the pore-filled ion exchange polyelectrolyte composite membrane is continuously manufactured through a roll-to-roll process, the manufacturing process is simple, and manufacturing costs can be greatly reduced.
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公开(公告)号：US20210237001A1
公开(公告)日：2021-08-05
申请号：US17052518
申请日：2019-04-29
发明人： Young Woo Choi , Mi Soon Lee , Tae Young Kim , Young Gi Yoon , Beom Jun Kim , Min Ho Seo , Chi Young Jung , Jong Min Lee , Nam-jo Jeong , Seung Cheol Yang , Ji Yeon Choi
摘要： A pore-filled ion exchange polyelectrolyte composite membrane from which the surface ion exchange polyelectrolyte has been removed and a method of manufacturing the same are provided. The ion exchange polyelectrolyte composite membrane exhibits low film resistance and low in-plane-direction swelling degree, and has a smaller film-thickness than a commercial film, and thus, can be used for various purposes. In addition, since the pore-filled ion exchange polyelectrolyte composite membrane is continuously manufactured through a roll-to-roll process, the manufacturing process is simple, and manufacturing costs can be greatly reduced.
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