Poly(arylene ether)s bounded with disulfonaphthoxyl pendants by post functionalization for polymer electrolyte membrane application in fuel cells

Hu, Zhaoxia; Lu, Yao; Zhang, Xulve; Gao, Qi; Yan, Xiangbin; Chen, Shouwen

doi:10.1016/j.ijhydene.2017.03.108

Cited by 14 publications

(11 citation statements)

References 40 publications

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“…The fuel cell performance was evaluated at 80°C. philic substitution reaction as previously reported [28]. According to GPC results, the PFAE copolymers had numberaverage and weight-average molecular weights of 96.4 kDa and 253.0 kDa, respectively, with polydispersity index of 2.62, indicating their high molecular weights.…”

Section: Fuel Cell Performancesupporting

confidence: 76%

“…The values of τ for all membranes were more than 18.5 h, and for the c‐SPFAES‐1.04 and c‐SPFAES‐1.21 membranes, the τ values were even more than 72 h. The good oxidative stability mainly attributed to the plenty C‐Fs in the membranes that had high tolerance to the Fenton reagent. Compared with our previous work , the cross‐linking membrane showed better oxidative stability than side‐chain type membrane with the same IEC. For example, with the similar IEC determined by titration of 1.45 mmol g −1 , the c‐SPFAES‐1.61 membrane displayed nearly 13 times longer τ values than the side‐chain type one (3.5 h).…”

Section: Resultsmentioning

confidence: 87%

“…This should be because the high content of fluorinated monomer (50%) in the polymer backbone decreases the affinity for water molecules. Compared with the sSPFAE‐A1.39 membrane in our previous work , the c‐SPFAES membranes showed higher water uptake, hydration number, and proton conductivity at the same IEC. This is mainly related to the sulfonated side‐chain as well as cross‐linked structure of the membranes.…”

Section: Resultsmentioning

confidence: 89%

“…Figure shows the synthesis route of PFAE, SPAES‐oligomers and preparation of c‐SPFAES membranes. The fluorinated polymer PFAE was synthesized via the aromatic nucleophilic substitution reaction as previously reported . According to GPC results, the PFAE copolymers had number‐average and weight‐average molecular weights of 96.4 kDa and 253.0 kDa, respectively, with polydispersity index of 2.62, indicating their high molecular weights.…”

Section: Resultsmentioning

confidence: 91%

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Sulfonated Oligomer‐crosslinked Fluorinated Poly(aryl ether sulfone)‐based Proton Exchange Membranes for Fuel Cells

Zhang

Yan

et al. 2018

Fuel Cells

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A series of sulfonated oligomer‐crosslinked fluorinated poly(aryl ether sulfone) membranes (c‐SPFAES) have been prepared in a consecutive casting and thermal treating process from fluorinated polymers and sulfonated oligomers, where the latter acted as hydrophilic grafts and crosslinkers at the same time. Membrane structure and physico‐chemical properties are characterized and evaluated by 1H‐nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis and atomic force microscopy, Fenton, water‐swelling and H2/O2 single cell tests. For the c‐SPFAES membranes with ion exchange capacity of 1.04–1.78 mmol g−1, they exhibit excellent mechanical toughness with Young's moduli above 1.3 GPa and tensile strength beyond 35.8 MPa, good dimensional and thermo‐oxidative stability. They also exhibited clear hydrophilic‐hydrophobic phase‐separation morphology. The proton conductivity is higher than 0.1 S cm−1 for the c‐SPFAES membranes with IEC over 1.38 mmol g−1 at 60 °C. In a H2/O2 single cell test, the maximum power density of the c‐SPFAES‐1.61 membrane achieves 587 mW cm−2 at 80 °C under fully hydrated state. The c‐SPFAES membrane show promising potentials as a polymer electrolyte membrane candidate for fuel cell applications.

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Section: Fuel Cell Performancesupporting

confidence: 76%

Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 91%

See 2 more Smart Citations

Sulfonated Oligomer‐crosslinked Fluorinated Poly(aryl ether sulfone)‐based Proton Exchange Membranes for Fuel Cells

Zhang

Yan

et al. 2018

Fuel Cells

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“…For fuel cell applications, the ionic conductivity is a critical parameter to be investigated. The minimum ionic conductivity of 10 mS/cm is required for actual fuel cell operation . Figure shows the ionic conductivity of the QPFAE membrane as a function of temperature in water.…”

Section: Resultsmentioning

confidence: 98%

Stable anion exchange membranes derived from fluorinated poly(aryl ethers) with quaternized fluorene units for fuel cell applications

Gao

Pan

Buregeya

et al. 2018

J of Applied Polymer Sci

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A series of fluorinated poly(aryl ethers) containing benzyltrimethyl quaternary ammonium functionalized fluorene units (QPFAE) are synthesized via condensation polymerization, chloromethylation, and quaternization. Ionomer structure and the ion exchange capacity are confirmed by 1 H-nuclear magnetic resonance spectroscopy. Other characterization techniques such as Fourier transform infrared spectroscopy, atomic force microscopy, thermogravimetric analysis, gel permeation chromatography, electrochemical impedance spectroscopy, Fenton, water-swelling, and hydrolytic aging tests are used to evaluate the physicochemical properties of the as-prepared QPFAE membranes. For the QPFAE membranes with ion exchange capacity of 0.95-1.94 mmol/g, they displayed low water uptake and methanol permeability (4.59-26.1 3 10 28 cm 2 /s at 25 8C), fairly good dimensional stability, high mechanical toughness, as well as fine thermal-oxidative-hydrolytic stability and ion conductivity at least 10 mS/cm. The membranes also showed clear hydrophilic/hydrophobic phase-separation morphology. Furthermore, the QPFAE membranes could endure harsh basic conditions (1-4 mol/L NaOH solution) at 60 and 80 8C at least 240 h, keeping rather high mechanical toughness and ion conduction capability during the aging test.

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Evaluation of properties and performance of poly(ether sulfone ketone) membranes in proton exchange membrane fuel cells

Oroujzadeh

Mehdipour‐Ataei

2022

Polymers for Advanced Techs

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Two series of sulfonated poly(ether sulfone ketone)s have been synthesized. The effect of different ratios of sulfone: ketone functional groups on the properties and performance of membranes is studied. The density, ion‐exchange capacity, water absorption, swelling ratio, proton conductivity, thermal and oxidative stability of membranes are determined. The results showed that membranes with higher contents of sulfone functional groups show lower density and consequently higher water absorption and swelling ratio values. A precise evaluation of the effect of different sulfone: ketone functional group ratios on the analytical acid concentration and the effective proton mobility and their relationship with water absorption have been performed. The proton conductivity values are between 71–78 mS.cm−1 at 30°C and 117–208 mS.cm−1 at 80°C. The effective proton mobilities at 80°C are in the range of 10.27 × 10 −4 to 16.68 × 10 −4 cm2.V−1.s−1. The highest current density for prepared membranes in H2/O2 single cell at 100% relative humidity and 80°C is 1900 mA.cm−2.

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Poly(arylene ether)s bounded with disulfonaphthoxyl pendants by post functionalization for polymer electrolyte membrane application in fuel cells

Cited by 14 publications

References 40 publications

Sulfonated Oligomer‐crosslinked Fluorinated Poly(aryl ether sulfone)‐based Proton Exchange Membranes for Fuel Cells

Sulfonated Oligomer‐crosslinked Fluorinated Poly(aryl ether sulfone)‐based Proton Exchange Membranes for Fuel Cells

Stable anion exchange membranes derived from fluorinated poly(aryl ethers) with quaternized fluorene units for fuel cell applications

Evaluation of properties and performance of poly(ether sulfone ketone) membranes in proton exchange membrane fuel cells

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