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Fabrication of SPAEK-cerium zirconium oxide nanotube composite membrane with outstanding performance and durability for vanadium redox flow batteries

Title
Fabrication of SPAEK-cerium zirconium oxide nanotube composite membrane with outstanding performance and durability for vanadium redox flow batteries
Authors
Hossain, Syed ImdadulAziz, Md. AbdulHan, Da BinSelvam, ParasuramanShanmugam, Sangaraju
DGIST Authors
Shanmugam, Sangaraju
Issue Date
2018-11
Citation
Journal of Materials Chemistry A, 6(41), 20205-20213
Type
Article
Article Type
Article
Keywords
POLY(ETHER ETHER KETONE)POLYMER ELECTROLYTE MEMBRANESEXCHANGE MEMBRANESFUEL-CELLPHYSICOCHEMICAL PROPERTIESPROTON CONDUCTIVITYBLEND MEMBRANEDRY CONDITIONSDEGRADATIONCOPOLYMERS
ISSN
2050-7488
Abstract
Herein, an alternative sulfonated poly(arylene ether ketone) (SPAEK)-cerium zirconium oxide nanotube (Ce2Zr2O7NT) composite (SPAEK/Ce2Zr2O7) membrane has been proposed as a potential polymer electrolyte membrane for all vanadium redox flow batteries (VRFBs) performance. The as-prepared composite membrane showed higher ion selectivity and reduced vanadium ion crossover than the pristine SPAEK and NRE-212 (Nafion-212) membranes in VRFB operation. The vanadium ion permeability rate of SPAEK/Ce2Zr2O7 (2%) composite membrane was found to be 27-fold and 12-fold lower than that of commercial NRE-212 and pristine SPAEK membranes, respectively. VRFBs operated with SPAEK/Ce2Zr2O7 (441 h) were shown to have a lower self-discharge rate than pristine SPAEK (172 h) and NRE-212 (42 h) membranes, respectively. Finally, an electrochemical test of VRFB exhibited high retention capacity after 100 cycles for SPAEK/Ce2Zr2O7 membrane as compared to NRE-212 and pristine SPAEK, while the coulombic efficiency (99.42%) at 40 mA cm-2. The structure and morphology of Ce2Zr2O7NT and the composite membrane were investigated by means of XRD, SEM, and TEM, and a consistent chemical structure of SPAEK/Ce2Zr2O7 (2%) composite membrane before and after the chemical stability test was confirmed using 1H NMR. The composite with 2% filler exhibits improved thermal, mechanical, oxidative, and chemical stability with superior ion selectivity. Also, X-ray photoelectron spectroscopy (XPS) analysis of SPAEK/Ce2Zr2O7 (2%) composite membrane reveals the existence of a vanadium peak after 100 VRFB cycles. © 2018 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/9410
DOI
10.1039/c8ta08349e
Publisher
Royal Society of Chemistry
Related Researcher
  • Author Shanmugam, Sangaraju Advanced Energy Materials Laboratory
  • Research Interests Electrocatalysts for fuel cells; water splitting; metal-air batteries; Polymer electrolyte membranes for fuel cells; flow batteries; Hydrogen generation and utilization
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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