Composite blend polymer membranes with increased proton selectivity and lifetime for vanadium redox flow batteries

Dongyang Chen, Soowhan Kim, Vincent Sprenkle, Michael Anthony Hickner

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Composite membranes based on blends of sulfonated fluorinated poly(arylene ether) (SFPAE) and poly(vinylidene fluoride-co-hexafluoropropene) (P(VDF-co-HFP)) were prepared with varying P(VDF-co-HFP) content for vanadium redox flow battery (VRFB) applications. The properties of the SFPAE-P(VDF-co-HFP) blends were characterized by atomic force microscopy, differential scanning calorimetry, and Fourier transform infrared spectroscopy. The water uptake, mechanical properties, thermal properties, proton conductivity, VO2+ permeability and VRFB cell performance of the composite membranes were investigated in detail and compared to the pristine SFPAE membrane. It was found that SFPAE had good compatibility with P(VDF-co-HFP) and the incorporation of P(VDF-co-HFP) increased the mechanical properties, thermal properties, and proton selectivity of the materials effectively. An SFPAE composite membrane with 10 wt.% P(VDF-co-HFP) exhibited a 44% increase in VRFB cell lifetime as compared to a cell with a pure SFPAE membrane. Therefore, the P(VDF-co-HFP) blending approach is a facile method for producing low-cost, high-performance VRFB membranes.

Original languageEnglish (US)
Pages (from-to)301-306
Number of pages6
JournalJournal of Power Sources
Volume231
DOIs
StatePublished - Feb 8 2013

Fingerprint

Vanadium
polymer blends
Polymer blends
vinylidene
vanadium
fluorides
electric batteries
Protons
Ethers
Ether
selectivity
ethers
membranes
Membranes
life (durability)
composite materials
protons
Composite membranes
Composite materials
Thermodynamic properties

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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abstract = "Composite membranes based on blends of sulfonated fluorinated poly(arylene ether) (SFPAE) and poly(vinylidene fluoride-co-hexafluoropropene) (P(VDF-co-HFP)) were prepared with varying P(VDF-co-HFP) content for vanadium redox flow battery (VRFB) applications. The properties of the SFPAE-P(VDF-co-HFP) blends were characterized by atomic force microscopy, differential scanning calorimetry, and Fourier transform infrared spectroscopy. The water uptake, mechanical properties, thermal properties, proton conductivity, VO2+ permeability and VRFB cell performance of the composite membranes were investigated in detail and compared to the pristine SFPAE membrane. It was found that SFPAE had good compatibility with P(VDF-co-HFP) and the incorporation of P(VDF-co-HFP) increased the mechanical properties, thermal properties, and proton selectivity of the materials effectively. An SFPAE composite membrane with 10 wt.{\%} P(VDF-co-HFP) exhibited a 44{\%} increase in VRFB cell lifetime as compared to a cell with a pure SFPAE membrane. Therefore, the P(VDF-co-HFP) blending approach is a facile method for producing low-cost, high-performance VRFB membranes.",
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Composite blend polymer membranes with increased proton selectivity and lifetime for vanadium redox flow batteries. / Chen, Dongyang; Kim, Soowhan; Sprenkle, Vincent; Hickner, Michael Anthony.

In: Journal of Power Sources, Vol. 231, 08.02.2013, p. 301-306.

Research output: Contribution to journalArticle

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