Invention Grant
- Patent Title: Micropore-filled double-sided membrane for low vanadium ion permeability and method for manufacturing same
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Application No.: US17057682Application Date: 2019-04-29
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Publication No.: US11607680B2Publication Date: 2023-03-21
- Inventor: Young Woo Choi , Mi Soon Lee , Young Gi Yoon , Tae Young Kim , Min Ho Seo , Beom Jun Kim , Chi Young Jung , Jong Min Lee
- Applicant: TORAY ADVANCED MATERIALS KOREA INC.
- Applicant Address: KR Gyeongsangbuk-do
- Assignee: TORAY ADVANCED MATERIALS KOREA INC.
- Current Assignee: TORAY ADVANCED MATERIALS KOREA INC.
- Current Assignee Address: KR Gyeongsangbuk-do
- Agency: Snell & Wilmer L.L.P.
- Priority: KR10-2018-0059292 20180524
- International Application: PCT/KR2019/005137 WO 20190429
- International Announcement: WO2019/225873 WO 20191128
- Main IPC: H01M8/18
- IPC: H01M8/18 ; B01J43/00 ; H01M50/497 ; H01M50/414 ; H01M50/403 ; H01M8/1032 ; H01M8/1058 ; H01M8/1072

Abstract:
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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