Preparation and DMFC performance of a sulfophenylated poly(arylene ether ketone) polymer electrolyte membrane

Liu, Baijun; Hu, Wei; Kim, Yu Seung; Zou, Haifeng; Robertson, Gilles P.; Jiang, Zhenhua; Guiver, Michael D.

doi:10.1016/j.electacta.2010.02.014

Cited by 21 publications

(4 citation statements)

References 22 publications

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“…Several approaches have been investigated. [75][76][77][78] These include: (1) increasing acid content, [79][80][81][82][83][84][85][86][87] (2) changing the position of sulfonic acid groups, [88][89][90][91][92][93][94][95][96][97][98][99] (3) synthesizing the multi-block copolymers with long hydrophilic/ hydrophobic blocks, [100][101][102][103][104][105][106][107][108][109] (4) synthesizing the copolymers with locally high sulfonic acid group concentration, [110][111][112][113][114][115][116][117] (5) developing the branched polymers, [118][119][120][121] such as starbranched polymers, dendrimers, hyperbranched polymers, and comb-shaped polymers, (6) filling ionomers int...…”

Section: Pem Alternatives To Nafion For Ht-pemfcmentioning

confidence: 99%

Advances in the high performance polymer electrolyte membranes for fuel cells

2012

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This critical review tersely and concisely reviews the recent development of the polymer electrolyte membranes and the relationship between their properties and affecting factors like operation temperature. In the first section, the advantages and shortcomings of the corresponding polymer electrolyte membrane fuel cells are analyzed. Then, the limitations of Nafion membranes and their alternatives to large-scale commercial applications are discussed. Secondly, the concepts and approaches of the alternative proton exchange membranes for low temperature and high temperature fuel cells are described. The highlights of the current scientific achievements are given for various aspects of approaches. Thirdly, the progress of anion exchange membranes is presented. Finally, the perspectives of future trends on polymer electrolyte membranes for different applications are commented on (400 references).

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Section: Pem Alternatives To Nafion For Ht-pemfcmentioning

confidence: 99%

Advances in the high performance polymer electrolyte membranes for fuel cells

2012

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“…Sulfonated aromatic polymers: SPEEK-HQ, Ph-SPEEK, Ph-m-SPEEKK, and SPAEEN-B were synthesized according to our previous work, ,− and the detailed synthesis and characterization of polymers were reported previously. , Figure S1 shows the structures of the polymers used in the present study.…”

Section: Methodsmentioning

confidence: 99%

Sorption of Water/Methanol on Teflon and Hydrocarbon Proton Exchange Membranes

Mighri

Guiver

et al. 2016

ACS Appl. Mater. Interfaces

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The sorption of water and methanol droplets on Teflon films, as well as on various representative classes of hydrocarbon-based proton exchange membranes (PEMs) was investigated using contact angle measurement (drop shape method) during wetting under ambient open-air conditions. Teflon films exhibited constant hydrophobic surfaces when contacted with water, but a significant sorption of methanol. The PEMs showed slow sorption of water, and a significant sorption of methanol. The differences in sorption of water and methanol on Teflon and PEMs arose from the match/compatibility in the surface free energies as well as polarities between a liquid and a membrane. The significant discrepancies in surface free energies and polarities between water (72.0 mJ m(-2) and 70.1%, respectively) and Teflon film (14.0 mJ m(-2) and 4.9%, respectively) lead to a highly hydrophobic surface and no discernible sorption of water on Teflon films, while the relative similarity or minor discrepancy in surface free energies and polarities between methanol (22.5 mJ m(-2) and 17.0%, respectively) and Teflon film (14.0 mJ m(-2) and 4.9%, respectively) results in a significant sorption of methanol on Teflon. The surface free energies of PEMs were calculated using the harmonic-mean approach, based on contact angle measurements using both water and diiodomethane as probes. The results show that PEMs have initial surface free energies ranging from 44.1 to 54.0 mJ m(-2) along with polarities in the range of 20.8 to 29.1%, for a selection of typical sulfonated polymers. The surface free energies of ionomers were principally contributed to by the nonpolar component, but the presence of polar groups in the polymer increased the polar component, leading to an increase in surface free energy. Of the PEMs investigated, sulfonated poly(aryl ether ether nitrile) has a higher surface energy than those of other ionomers with similar sulfonate contents. The compatibility between water/methanol and PEMs was investigated on the aspect of surface free energies. The present study provides a plausible strategy to prescreen potential PEMs and optimize membrane electrode assembly (MEA) fabrication.

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“…In DMFCs, the PEM acts as an effective barrier to prevent methanol diffusion from the anode to the cathode avoiding power loss and mixed potentials. According to previous literature, 38 low methanol permeability is required for the efficient use of PEMs in DMFCs. One of the most significant drawbacks of Nafion is its high methanol crossover.…”

Section: Methanol Permeabilitymentioning

confidence: 99%

Organic–inorganic hybrid proton-conducting electrolyte membranes based on sulfonated poly(arylene ether sulfone) and SiO₂–SO₃H network for fuel cells

Yang

Huo

Ren

et al. 2016

High Performance Polymers

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A series of novel organic–inorganic hybrid proton exchange membranes (PEMs) were prepared from the sulfonated poly(arylene ether sulfone) with 4-amino phenyl pendant groups (Am-SPAES), (3-isocyanatopropyl) triethoxysilane (ICPTES), and 3-(trihydroxysilyl) propane-1-sulfonic acid with covalent bonds to form network using a sol-gel method. The obtained cross-linked hybrid membranes (Am-SPAES/I-SiO2-S) displayed excellent solvent resistance and thermal and mechanical stability. The Am-SPAES/I-SiO2-S membranes with cross-linking network exhibited a higher proton conductivity (0.043 S cm−1 at 20°C) than PEMs without covalent bonds (Am-SPAES/SiO2-S) and the swelling ratio maintained below 17.00% even at 100°C. Most importantly, all of the obtained membranes showed considerably lower methanol permeability than that of Nafion 117. In addition, the chemical structures and morphologies of the hybrid membranes were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively.

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Preparation and DMFC performance of a sulfophenylated poly(arylene ether ketone) polymer electrolyte membrane

Cited by 21 publications

References 22 publications

Advances in the high performance polymer electrolyte membranes for fuel cells

Advances in the high performance polymer electrolyte membranes for fuel cells

Sorption of Water/Methanol on Teflon and Hydrocarbon Proton Exchange Membranes

Organic–inorganic hybrid proton-conducting electrolyte membranes based on sulfonated poly(arylene ether sulfone) and SiO₂–SO₃H network for fuel cells

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Preparation and DMFC performance of a sulfophenylated poly(arylene ether ketone) polymer electrolyte membrane

Cited by 21 publications

References 22 publications

Advances in the high performance polymer electrolyte membranes for fuel cells

Advances in the high performance polymer electrolyte membranes for fuel cells

Sorption of Water/Methanol on Teflon and Hydrocarbon Proton Exchange Membranes

Organic–inorganic hybrid proton-conducting electrolyte membranes based on sulfonated poly(arylene ether sulfone) and SiO2–SO3H network for fuel cells

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Organic–inorganic hybrid proton-conducting electrolyte membranes based on sulfonated poly(arylene ether sulfone) and SiO₂–SO₃H network for fuel cells