Pore-Filled PEMs from Poly(Phenylene Sulfonic Acid)s and Electrospun Poly(Phenylene Sulfone) Fiber Mats

Hossain, M.; Shang, Z.; Wycisk, Ryszard; Pintauro, Peter N.

doi:10.1149/09809.0367ecst

Title: Pore-Filled PEMs from Poly(Phenylene Sulfonic Acid)s and Electrospun Poly(Phenylene Sulfone) Fiber Mats

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Abstract

A novel, composite, non-PFSA-based fuel cell membrane has been fabricated using a pore filling technique. The membrane consists of a mechanically stabilizing skeleton from an electrospun poly(phenylene sulfone) (PPSU) fiber mat and a thermally crosslinkable poly(phenylene sulfonic acid) (cPPSA) proton conducting ionomer that fills the interfiber voids. cPPSA copolymer was synthesized using Ullmann coupling copolymerization of 4,4-dibromobiphenyl 3,3-disulfonic acid with 1,4-dibromobenzene-2,5-disulfonic, followed by grafting a certain fraction of backbone sulfonic acid groups with biphenyl linker. The PPSU fiber mat was electrospun from NMP/acetone solution. Pore-filling was carried out by pouring a solution of cPPSA in methanol over the mat, followed by heating at 70°C to evaporate solvent. The cPPSA was crosslinked by an additional heating step, in a vacuum oven at 210°C for 5 hours. Here the resultant membrane had excellent proton conductivity, 5 times greater than that of Nafion® 211 in the 40-90% RH range at 80°C.

Authors:

Hossain, M. ^[1]; Shang, Z. ^[1];

^[1];

^[1]

Vanderbilt University, Nashville, TN (United States)

Publication Date:: Tue Sep 08 00:00:00 EDT 2020

Research Org.:: Vanderbilt Univ., Nashville, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 2143718

Grant/Contract Number:: EE0008435

Resource Type:: Accepted Manuscript

Journal Name:: ECS Transactions

Additional Journal Information:: Journal Volume: 98; Journal Issue: 9; Journal ID: ISSN 1938-5862

Publisher:: Electrochemical Society

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; Proton-conducting membrane; polyphenylene; fuel cell; hydrogen

Citation Formats


                    Hossain, M., Shang, Z., Wycisk, Ryszard, and Pintauro, Peter N. Pore-Filled PEMs from Poly(Phenylene Sulfonic Acid)s and Electrospun Poly(Phenylene Sulfone) Fiber Mats.  United States: N. p., 2020. 
Web.  doi:10.1149/09809.0367ecst.

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                    Hossain, M., Shang, Z., Wycisk, Ryszard, & Pintauro, Peter N. Pore-Filled PEMs from Poly(Phenylene Sulfonic Acid)s and Electrospun Poly(Phenylene Sulfone) Fiber Mats.  United States.  https://doi.org/10.1149/09809.0367ecst

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                    Hossain, M., Shang, Z., Wycisk, Ryszard, and Pintauro, Peter N. Tue .  
"Pore-Filled PEMs from Poly(Phenylene Sulfonic Acid)s and Electrospun Poly(Phenylene Sulfone) Fiber Mats".  United States.  https://doi.org/10.1149/09809.0367ecst.  https://www.osti.gov/servlets/purl/2143718.

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@article{osti_2143718,

  title        = {Pore-Filled PEMs from Poly(Phenylene Sulfonic Acid)s and Electrospun Poly(Phenylene Sulfone) Fiber Mats},

  author       = {Hossain, M. and Shang, Z. and Wycisk, Ryszard and Pintauro, Peter N.},

  abstractNote = {A novel, composite, non-PFSA-based fuel cell membrane has been fabricated using a pore filling technique. The membrane consists of a mechanically stabilizing skeleton from an electrospun poly(phenylene sulfone) (PPSU) fiber mat and a thermally crosslinkable poly(phenylene sulfonic acid) (cPPSA) proton conducting ionomer that fills the interfiber voids. cPPSA copolymer was synthesized using Ullmann coupling copolymerization of 4,4-dibromobiphenyl 3,3-disulfonic acid with 1,4-dibromobenzene-2,5-disulfonic, followed by grafting a certain fraction of backbone sulfonic acid groups with biphenyl linker. The PPSU fiber mat was electrospun from NMP/acetone solution. Pore-filling was carried out by pouring a solution of cPPSA in methanol over the mat, followed by heating at 70°C to evaporate solvent. The cPPSA was crosslinked by an additional heating step, in a vacuum oven at 210°C for 5 hours. Here the resultant membrane had excellent proton conductivity, 5 times greater than that of Nafion® 211 in the 40-90% RH range at 80°C.},

  doi          = {10.1149/09809.0367ecst},

  journal      = {ECS Transactions},

  number       = 9,

  volume       = 98,

  place        = {United States},

  year         = {Tue Sep 08 00:00:00 EDT 2020},

  month        = {Tue Sep 08 00:00:00 EDT 2020}

}

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