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Please use this identifier to cite or link to this item: http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/15113
Title: Design and synthesis of highly stable poly(tetrafluoroethylene)-zirconium phosphate (PTFE-ZrP) ion-exchange membrane for vanadium redox flow battery (VRFB)
Authors: Pandey, Jay
Keywords: Chemical Engineering
Vanadium redox flow battery (VRFB)
Ion-exchange membrane (IEM)
Electrolyte
Issue Date: Jan-2017
Publisher: Springer
Abstract: Vanadium redox flow battery (VRFB) is a promising technology for large-scale renewable energy storage. Design of ion-exchange membrane (IEM) with desired properties like low-cost, mechanically chemically stable, low vanadium ion permeability and high proton conductivity is one of the major challenges. Here, we report the design and synthesis of novel poly(tetrafluoroethylene)-zirconium phosphate (PTFE-ZrP) asymmetric IEM using a simple brush coating method. XRD results confirmed the presence of α-ZrP crystalline phase onto the top layer of the membrane. Excellent mechanical strength was observed with burst pressure of 3.22 × 105 N m−2. Oxidative stability of membrane in Fenton’s reagent was much better than Nafion-115. Vanadium ion (V4+) permeability of the membrane was more than three times lower than that of Nafion-115. Single-cell VRFB with PTFE-ZrP membrane showed ∼80% energy efficiency below 30 mA cm−2. Very high columbic efficiency ∼100% of VRFB with PTFE-ZrP membrane confirmed little contamination of electrolyte due to cross-mixing.
URI: https://link.springer.com/article/10.1007/s11581-016-1967-8
http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/15113
Appears in Collections:Department of Chemical Engineering

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