Novel highly efficient branched polyfluoro sulfonated polyimide membranes for application in vanadium redox flow battery
作者： Wenjie Xu , Jun Long , Jun Liu , Yanlin Wang , Huan Luo
DOI: 10.1016/J.JPOWSOUR.2020.229354
关键词:
摘要: Branched polyfluoro sulfonated polyimide (BPFSPI) membranes with different degree of branching and degree of sulfonation are designed and prepared for application in vanadium redox flow battery (VRFB). The optimized BPFSPI-10-50 membrane exhibits a similar proton conductivity (2.94× 10− 2 S cm− 1) as that of the commercial Nafion 212 membrane (3.20× 10− 2 S cm− 1) and a much higher membrane selectivity (3.16× 10 5 S min cm− 3) than Nafion 212 membrane (0.42× 10 5 S min cm− 3). Meanwhile, BPFSPI-10-50 membrane is …
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