Nanoporous polysulfone membranes via a degradable block copolymer precursor for redox flow batteries

B. P. Gindt; D. G. Abebe; Z. J. Tang; M. B. Lindsey; J. Chen; R. A. Elgammal; T. A. Zawodzinski; T. Fujiwara

doi:10.1039/C6TA00698A

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Nanoporous polysulfone membranes via a degradable block copolymer precursor for redox flow batteries

B. P. Gindt,^a D. G. Abebe,^a Z. J. Tang,^b M. B. Lindsey,^c J. Chen,^d R. A. Elgammal,^c T. A. Zawodzinski*^bc and T. Fujiwara*^a

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Memphis, 213 Smith Chemistry Bldg, Memphis, TN 38152, USA
E-mail: tfjiwara@memphis.edu
Tel: +1 901-678-5558

^b Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

^c Department of Chemical and Biomolecular Engineering, University of Tennessee-Knoxville, Knoxville, TN 37996, USA

^d Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

Abstract

Nanoporous polysulfone (PSU) membranes were fabricated via post-hydrolysis of polylactide (PLA) from PLA–PSU–PLA triblock copolymer membranes. The PSU scaffold was thermally crosslinked before sacrificing PLA blocks. The resulting nanopore surface was chemically modified with sulfonic acid moieties. The membranes were analyzed and evaluated as separators for vanadium redox flow batteries. Nanoporous PSU membranes prepared by this new method and further chemically modified to a slight degree exhibited unique behavior with respect to their ionic conductivity when exposed to solutions of increasing acid concentration.

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DOI: https://doi.org/10.1039/C6TA00698A
Article type: Paper
Submitted: 25 jan. 2016
Accepted: 09 feb. 2016
First published: 16 feb. 2016

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J. Mater. Chem. A, 2016,4, 4288-4295

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Nanoporous polysulfone membranes via a degradable block copolymer precursor for redox flow batteries

B. P. Gindt, D. G. Abebe, Z. J. Tang, M. B. Lindsey, J. Chen, R. A. Elgammal, T. A. Zawodzinski and T. Fujiwara, J. Mater. Chem. A, 2016, 4, 4288 DOI: 10.1039/C6TA00698A

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Journal of Materials Chemistry A

Nanoporous polysulfone membranes via a degradable block copolymer precursor for redox flow batteries

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Nanoporous polysulfone membranes via a degradable block copolymer precursor for redox flow batteries

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