A composite membrane based on a Nafion polymer matrix incorporating a non-stoichiometric calcium titanium oxide (CaTiO3−δ) additive was synthesized and characterized by means of thermal analysis, dynamic mechanical analysis, and broadband dielectric spectroscopy at different filler contents; namely two concentrations of 5 and 10 wt.% of the CaTiO3−δ additive, with respect to the dry Nafion content, were considered. The membrane with the lower amount of additive displayed the highest water affinity and the highest conductivity, indicating that a too-high dose of additive can be detrimental for these particular properties. The mechanical properties of the composite membranes are similar to those of the plain Nafion membrane and are even slightly improved by the filler addition. These findings indicate that perovskite oxides can be useful as a water-retention and reinforcing additive in low-humidity proton-exchange membranes.

Composite nafion membranes with catio3additive for possible applications in electrochemical devices / Mazzapioda, L.; Navarra, M. A.; Trequattrini, F.; Paolone, A.; Elamin, K.; Martinelli, A.; Palumbo, O.. - In: MEMBRANES. - ISSN 2077-0375. - 9:11(2019). [10.3390/membranes9110143]

Composite nafion membranes with catio3additive for possible applications in electrochemical devices

Mazzapioda L.;Navarra M. A.;Trequattrini F.;
2019

Abstract

A composite membrane based on a Nafion polymer matrix incorporating a non-stoichiometric calcium titanium oxide (CaTiO3−δ) additive was synthesized and characterized by means of thermal analysis, dynamic mechanical analysis, and broadband dielectric spectroscopy at different filler contents; namely two concentrations of 5 and 10 wt.% of the CaTiO3−δ additive, with respect to the dry Nafion content, were considered. The membrane with the lower amount of additive displayed the highest water affinity and the highest conductivity, indicating that a too-high dose of additive can be detrimental for these particular properties. The mechanical properties of the composite membranes are similar to those of the plain Nafion membrane and are even slightly improved by the filler addition. These findings indicate that perovskite oxides can be useful as a water-retention and reinforcing additive in low-humidity proton-exchange membranes.
CaTiO; 3-δ; composite electrolyte; inorganic filler; nafion
01 Pubblicazione su rivista::01a Articolo in rivista
Composite nafion membranes with catio3additive for possible applications in electrochemical devices / Mazzapioda, L.; Navarra, M. A.; Trequattrini, F.; Paolone, A.; Elamin, K.; Martinelli, A.; Palumbo, O.. - In: MEMBRANES. - ISSN 2077-0375. - 9:11(2019). [10.3390/membranes9110143]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1343616
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