Nanofiber based hybrid sulfonated silica/P(VDF-TrFE) membranes for PEM fuel cells
| Autor: | Selmiye Alkan Gürsel, Naeimeh Rajabalizadeh Mojarrad, Alp Yürüm, Bilal Iskandarani, Begüm Yarar Kaplan, Adnan Taşdemir |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Energy Engineering and Power Technology Proton exchange membrane fuel cell 02 engineering and technology Electrolyte 010402 general chemistry 01 natural sciences TP Chemical technology TA401-492 Materials of engineering and construction. Mechanics of materials T Technology (General) QD450-801 Physical and theoretical chemistry TP1080 Polymers and polymer manufacture Fiber chemistry.chemical_classification QC310.15 Thermodynamics Renewable Energy Sustainability and the Environment Membrane structure Q Science (General) Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics Electrospinning 0104 chemical sciences Fuel Technology Membrane chemistry Chemical engineering Nanofiber 0210 nano-technology QD001-65 General |
| DOI: | 10.1016/j.ijhydene.2020.08.005 |
| Popis: | In this study, novel nanofiber based-hybrid proton conducting membranes for polymer electrolyte membrane (PEM) fuel cells were fabricated via electrospinning method using sulfonated silica particles (S-SiO2) as a functional additive. Here, poly(vinylidene fluorideco-trifluoroethylene) (P(VDF-TrFE)) was used as the carrier polymer during electrospinning step for the fabrication of PEM fuel cell membrane structure for the first time in literature. The effect of electrospinning conditions, i.e. namely, solvent, carrier polymer, electrospinning voltage, relative humidity, and flow rate on the uniformity of the resultant electrospun mats, and the average fiber diameter, respectively, were investigated in detail. Furthermore, electrospinning was conducted with poly(vinylidene fluoride) (PVDF) as the carrier polymer to compare with (P(VDF-TrFE)) as well. S-SiO2 particles were homogeneously distributed along the carrier polymer without any noticeable bead formation. After electrospinning, fiber mats were transformed into dense membranes via hot-pressing and subsequent Nafion (R), water uptake and mechanical strength of the hybrid membranes were examined and reported as well. Consequently, hybrid membrane with P(VDF-TrFE) carrier exhibited a superior proton conductivity (102 mS/cm) benchmarked with PVDF carrier polymer containing membrane (43 mS/cm) and solution casted Nafion (R) membrane (95 mS/cm) at the same conditions. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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