Stable fluorinated sulfonated poly(arylene ether) membranes for vanadium redox flow batteries
作者： Dongyang Chen , Soowhan Kim , Liyu Li , Gary Yang , Michael A. Hickner
DOI: 10.1039/C2RA20834B
关键词: Faraday efficiency 、 Redox 、 Membrane 、 Arylene 、 Conductivity 、 Flow battery 、 Polymer chemistry 、 Selectivity 、 Chemical engineering 、 Materials science 、 Vanadium
摘要: Partially fluorinated sulfonated poly(arylene ether) (SFPAE) copolymers were investigated as chemically stable proton exchange membranes for application in vanadium redox flow batteries (VRFB). The membranes' conductivity and ion permeability quantified correlated to other membrane properties such water uptake tensile modulus provide insight into the tradeoffs design of new battery applications. SFPAE-1.8 sample with optimized selectivity was selected evaluation a VRFB device compared performance cell NAFION® N212 membrane. had higher coulombic efficiency, voltage energy efficiency under all tested current densities. capacity fade 1.1 mA h per cycle, which about 7 times lower than experienced characteristics could be directly this work demonstrates our progress towards high-performance, low-cost, long-lifetime electrochemical storage devices.
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