Sulfonated silica/nafion® based composite electrospun membranes for pem fuel cells

Rajabalizadeh Mojarrad, Naeimeh and Kırlıoğlu, Ahmet Can and Alkan Gürsel, Selmiye and Yarar Kaplan, Begüm (2022) Sulfonated silica/nafion® based composite electrospun membranes for pem fuel cells. In: 23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022, Istanbul, Turkey

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In this study, dual electrospinning were employed to fabricate proton conducting membranes comporising sulfonated silica, Nafion® and PVDF or P(VDF-TrFE) as the carrier polymers. Firstly, dual electrospinning was carried out to obtain dual fiber-based mats and converted into compact membranes via hot-pressing. After obtaining compact membranes, effect of various amounts of Nafion and type of carrier polymers were investigated. FTIR, ionic conductivity, ion exchange capacity (IEC), water uptake measurments and mechanical test were conducted for these membranes. Finally Membrane-electrode-assemblies (MEAs) were prepared via composite electrospun membranes and sprayed electrodes and fuel cell performance tests were performed. The fuel cell test showed that presence of sulfonated silica in the composite membranes improved the performance at lower humidity conditions. The P(VDF-TrFE)-Nafion®/S-SiO2 membranes with 60/30 wt% Nafion®/S-SiO2 compositon showed the best ionic conductivity and fuel cell performance.
Item Type: Papers in Conference Proceedings
Uncontrolled Keywords: Dual Electrospinning; Membranes; PEM Fuel Cells; Sol-Gel; Sulfonated Silica
Divisions: Faculty of Engineering and Natural Sciences
Sabancı University Nanotechnology Research and Application Center
Depositing User: Selmiye Alkan Gürsel
Date Deposited: 25 Apr 2023 14:21
Last Modified: 14 May 2024 15:06

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