Nafion composite membranes, containing different amounts of mesoporous sulfated titanium oxide (TiO2-SO4) were prepared by solvent-casting and tested in proton exchange membrane fuel cells (PEMFCs), operating at very low humidification levels. The TiO2-SO4 additive was originally synthesized by a sol-gel method and characterized through x-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and ion exchange capacity (IEC). Peculiar properties of the composite membranes, such as the thermal transitions and ion exchange capacity, were investigated and here discussed. When used as an electrolyte in the fuel cell, the composite membrane guaranteed an improvement with respect to bare Nafion systems at 30% relative humidity and 110 °C, exhibiting higher power and current densities.

Polymer electrolyte membranes based on Nafion and a superacidic inorganic additive for fuel cell applications / Mazzapioda, L.; Panero, S.; Navarra, M. A.. - In: POLYMERS. - ISSN 2073-4360. - 11:5(2019), pp. 1-10. [10.3390/polym11050914]

Polymer electrolyte membranes based on Nafion and a superacidic inorganic additive for fuel cell applications

Mazzapioda L.;Panero S.;Navarra M. A.
2019

Abstract

Nafion composite membranes, containing different amounts of mesoporous sulfated titanium oxide (TiO2-SO4) were prepared by solvent-casting and tested in proton exchange membrane fuel cells (PEMFCs), operating at very low humidification levels. The TiO2-SO4 additive was originally synthesized by a sol-gel method and characterized through x-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and ion exchange capacity (IEC). Peculiar properties of the composite membranes, such as the thermal transitions and ion exchange capacity, were investigated and here discussed. When used as an electrolyte in the fuel cell, the composite membrane guaranteed an improvement with respect to bare Nafion systems at 30% relative humidity and 110 °C, exhibiting higher power and current densities.
mesoporous sulfated titania; nanocomposite polymer electrolytes; PEM fuel cells
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Polymer electrolyte membranes based on Nafion and a superacidic inorganic additive for fuel cell applications / Mazzapioda, L.; Panero, S.; Navarra, M. A.. - In: POLYMERS. - ISSN 2073-4360. - 11:5(2019), pp. 1-10. [10.3390/polym11050914]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1282870
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