Highly-performing and low-cost nanostructured membranes based on Polysulfone and layered doubled hydroxide for high-temperature proton exchange membrane fuel cells

Simari, Cataldo; Lufrano, Ernestino; Brunetti, Adele; Barbieri, Giuseppe; Nicotera, Isabella

doi:10.1016/j.jpowsour.2020.228440

Cited by 41 publications

(26 citation statements)

References 62 publications

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“…Agglomeration of nanoparticles can reduce the mobility of proton ions and leads to a decrease in IEC and proton conductivity. Similar results for IEC of nanocomposite membranes were reported by other researchers 39 – 41 .…”

Section: Resultssupporting

confidence: 90%

Novel proton conducting core–shell PAMPS-PVBS@Fe2TiO5 nanoparticles as a reinforcement for SPEEK based membranes

Salarizadeh

Javanbakht

Askari

et al. 2021

Sci Rep

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In this study, new nanocomposite membranes from sulfonated poly (ether ether ketone) (SPEEK) and proton-conducting Fe2TiO5 nanoparticles are prepared by the solution casting method. Sulfonated core–shell Fe2TiO5 nanoparticles are synthesized by redox polymerization. Therefore, 4-Vinyl benzene sulfonate (VBS) and 2-acrylamide-2-methyl-1-propane sulfonic acid (AMPS) are grafted on the surface of nanoparticles through radical polymerization. The different amounts of hybrid nanoparticles (PAMPS@Fe2TiO5 and PVBS@Fe2TiO5) are incorporated into the SPEEK matrix. The results show higher proton conductivity for all prepared nanocomposites than that of the SPEEK membrane. Embedding the sulfonated Fe2TiO5 nanoparticles into the SPEEK membrane improves proton conductivity by creating the new proton conducting sites. Besides, the nanocomposite membranes showed improved mechanical and dimensional stability in comparison with that of the SPEEK membrane. Also, the membranes including 2 wt% of PAMPS@Fe2TiO5 and PVBS@Fe2TiO5 nanoparticles indicate the maximum power density of 247 mW cm−2 and 226 mW cm−2 at 80 °C, respectively, which is higher than that of for the pristine membrane. Our prepared membranes have the potential for application in polymer electrolyte fuel cells.

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Section: Resultssupporting

confidence: 90%

Novel proton conducting core–shell PAMPS-PVBS@Fe2TiO5 nanoparticles as a reinforcement for SPEEK based membranes

Salarizadeh

Javanbakht

Askari

et al. 2021

Sci Rep

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“…As shown by NMR and DSC techniques, the Nafion/SiO 2 and Nafion/Zr(HPO 4 ) 2 composite membranes exhibit a higher mobility of water molecules due to a higher hydration degree than dopant-free Nafion [ 176 ]. At the same time, using 1 H NMR data the authors of [ 177 , 178 ] concluded that in the hybrid Nafion membranes with organosilica layered materials bearing different functional groups (–SO 3 − and –PO 3 − ) and the membranes based on polysulfone and layered doubled hydroxide there are two types of water: free water localized in the membrane pores and water sorbed by the dopant surface.…”

Section: Hybrid Membranesmentioning

confidence: 99%

Ionic Mobility in Ion-Exchange Membranes

Стенина

Yaroslavtsev

2021

Membranes

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Membrane technologies are widely demanded in a number of modern industries. Ion-exchange membranes are one of the most widespread and demanded types of membranes. Their main task is the selective transfer of certain ions and prevention of transfer of other ions or molecules, and the most important characteristics are ionic conductivity and selectivity of transfer processes. Both parameters are determined by ionic and molecular mobility in membranes. To study this mobility, the main techniques used are nuclear magnetic resonance and impedance spectroscopy. In this comprehensive review, mechanisms of transfer processes in various ion-exchange membranes, including homogeneous, heterogeneous, and hybrid ones, are discussed. Correlations of structures of ion-exchange membranes and their hydration with ion transport mechanisms are also reviewed. The features of proton transfer, which plays a decisive role in the membrane used in fuel cells and electrolyzers, are highlighted. These devices largely determine development of hydrogen energy in the modern world. The features of ion transfer in heterogeneous and hybrid membranes with inorganic nanoparticles are also discussed.

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“…In both cases, a decrease of the number of hydrophilic sites available for proton exchange is achieved. In parallel, such features clearly affect the water absorption capacity of the electrolyte membranes [37]. The water uptake varies between 40 wt% of the pristine sPEEK and the 50 wt% of the sPEEK-PSLM 3 .…”

Section: Iec and Water Uptakementioning

confidence: 99%

Sulfonated Polyether Ether Ketone and Organosilica Layered Nanofiller for Sustainable Proton Exchange Membranes Fuel Cells (PEMFCs)

et al. 2022

Self Cite

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The ease and low environmental impact of its preparation, the reduced fuel crossover, and the low cost, make sulfonated polyether ether ketone (sPEEK) a potential candidate to replace the Nafion ionomer in proton exchange membrane fuel cells (PEMFCs). In this study, sPEEK was used as a polymer matrix for the preparation of nanocomposite electrolyte membranes by dispersing an organo-silica layered material properly functionalized by anchoring high phosphonated (PO3H) ionic groups (nominated PSLM). sPEEK-PSLM membranes were prepared by the solution intercalation method and the proton transport properties were investigated by NMR (diffusometry-PFG and relaxometry-T1) and EIS spectroscopies, whereas the mechanical properties of the membranes were studied by dynamic mechanical analysis (DMA). The presence of the organosilica nanoplatelets remarkably improved the mechanical strength, the water retention capacity at high temperatures, and the proton transport, in particular under harsh operative conditions (above 100 °C and 20–30% RH), usually required in PEMFCs applications.

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Highly-performing and low-cost nanostructured membranes based on Polysulfone and layered doubled hydroxide for high-temperature proton exchange membrane fuel cells

Cited by 41 publications

References 62 publications

Novel proton conducting core–shell PAMPS-PVBS@Fe2TiO5 nanoparticles as a reinforcement for SPEEK based membranes

Novel proton conducting core–shell PAMPS-PVBS@Fe2TiO5 nanoparticles as a reinforcement for SPEEK based membranes

Ionic Mobility in Ion-Exchange Membranes

Sulfonated Polyether Ether Ketone and Organosilica Layered Nanofiller for Sustainable Proton Exchange Membranes Fuel Cells (PEMFCs)

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