Synthesis and properties of novel H-bonded composite membranes from sulfonated poly(phthalazinone ether)s for PEMFC

Zhu, Xiuling; Liang, Yan; Pan, Haiyan; Jian, Xigao; Zhang, Yaoxia

doi:10.1016/j.memsci.2007.12.058

Cited by 43 publications

(10 citation statements)

References 34 publications

(31 reference statements)

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“…The crosshead speed was set at 1 mm min À 1 [28][29][30]. Before testing the mechanical properties of the sPBT-6FA membranes, they were dried at 120 1C for 24 h under vacuum [11,20,32].…”

Section: Measurementsmentioning

confidence: 99%

Soluble sulfonated polybenzothiazoles containing naphthalene for use as proton exchange membranes

Wang

Lee

et al. 2015

Journal of Membrane Science

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“…The crosshead speed was set at 1 mm min À 1 [28][29][30]. Before testing the mechanical properties of the sPBT-6FA membranes, they were dried at 120 1C for 24 h under vacuum [11,20,32].…”

Section: Measurementsmentioning

confidence: 99%

Soluble sulfonated polybenzothiazoles containing naphthalene for use as proton exchange membranes

Wang

Lee

et al. 2015

Journal of Membrane Science

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“…Many other type of membranes have already been tested: (i) non-fluorinated membranes [4]: sulfonated copolymers of polystyrene-polybutadiene, polyethersulfone, polyphenylenesulfone [5,6], polyetherketone [4,[7][8][9], polyarylene ethers [10], polyimides [11,12], polybenzimidazole [8,[13][14][15], polyacrylates [16][17][18], oxadiazole-based polymers [19] and (ii) fluorinated membranes: trifluoroethylene (TFE) copolymers and many radiografted polystyrene or styrene derivatives onto fluorinated polymer such as ethylene tetrafluoethylene (ETFE) or PVDF [20][21][22][23][24][25][26][27][28][29]. Some of these new polymers are promising but the two main problems are a lower conductivity and stability in oxidizing conditions compared to Nafion ® shortening the life time in fuel cell conditions [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Ion track grafting: A way of producing low-cost and highly proton conductive membranes for fuel cell applications

Clochard

Berthelot

Baudin

et al. 2010

Journal of Power Sources

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International audienceKeywords: Ion track grafting Radiografting Swift heavy ions Proton conductivity Polymer electrolyte membrane Proton exchange membrane fuel cell a b s t r a c t Proton conductive individual channels through a poly(vinyl di-fluoride) PVDF matrix have been designed using the ion track grafting technique. The styrene molecules were radiografted and further sulfonated leading to sulfonated polystyrene (PSSA) domains within PVDF. The grafting process all along the cylindrical ion tracks creates after functionalisation privileged paths perpendicular to the membrane plane for proton conduction from the anode to the cathode when used in fuel cells. Such ion track grafted PVDF-g-PSSA membranes have low gas permeation properties against H 2 and O 2. A degree of grafting (Y w) of 140% was chosen to ensure a perfect coverage of PSSA onto PVDF-g-PSSA surface minimizing interfacial ohmic losses with the active layers of the Membrane Electrolyte Assembly (MEA). A three-day fuel cell test has been performed feeding the cell with pure H 2 and O 2 , at the anode and cathode side respectively. Temperature has been progressively increased from 50 to 80 • C. Polarisation curves and Elec-trochemical Impedance Spectroscopy (EIS) at different current densities were used to evaluate the MEA performance. From these last measurements, it has been possible to determine the resistance of the MEA during the fuel cell tests and, thus the membrane conductivity. The proton conductivities of such membranes estimated during fuel cell tests range from 50 mS cm −1 to 80 mS cm −1 depending on the operating conditions. These values are close to that of perfluorosulfonated membrane such as Nafion ® in similar conditions

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“…All the subjected samples were then checked for their water absorption, IEC, and conductivity values as per the standard procedures [19] and the discussion of the observed results were reported earlier [18]. While in the case of BPM-I, although the reinforced fibers held the IEMs strongly, due to the enhanced degrading mechanism, the incorporated hydrophilic resins and functional groups that were present on the surface leached out from the membranes due to loosening of the fibers upon swelling which resulted in lower water absorption (value of about 66% than its initial 88%) and conductivity values (value of about 5.1 × 10 −3 S cm −1 from its initial 6.9 × 10 −3 S cm −1 ) [25].…”

Section: Chemical Stabilitymentioning

confidence: 99%

Development of monopolar and platinum intermediate bipolar membranes: application in desalting brine solution

Venugopal

Dharmalingam

2016

Desalination and Water Treatment

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A B S T R A C TThe desalination process parameters like current efficiency (CE), energy consumption, and acid-base production for the fabricated bipolar membrane (BPM) electrodialysis unit (five compartments of 120 cm 2 active areas) were investigated in this paper using monopolarand bipolar-based ion-exchange membranes (IEMs). Also, the performance of the fabricated unit in removing NaCl was assessed in terms of salinity. Polystyrene-ethylene-butylenepolystyrene was functionalized to prepare the monopolar and bipolar IEMs. In the case of BPM, platinum was used as the intermediate layer. The synthesized IEMs were characterized thermally and by contact angle measurements. A commercially procured monopolar and bipolar ion-exchange membrane made of polystyrene-divinylbenzene was also evaluated for the purpose of comparison. The electrodialysis process using these IEMs reached the highest CE of 66 and 38% with the lowest energy consumption of 0.24 Wh and 1.60 Wh for the synthesized and commercial membrane, respectively.

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Synthesis and properties of novel H-bonded composite membranes from sulfonated poly(phthalazinone ether)s for PEMFC

Cited by 43 publications

References 34 publications

Soluble sulfonated polybenzothiazoles containing naphthalene for use as proton exchange membranes

Soluble sulfonated polybenzothiazoles containing naphthalene for use as proton exchange membranes

Ion track grafting: A way of producing low-cost and highly proton conductive membranes for fuel cell applications

Development of monopolar and platinum intermediate bipolar membranes: application in desalting brine solution

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