Cargando…

Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices

A composite membrane based on a Nafion polymer matrix incorporating a non-stoichiometric calcium titanium oxide (CaTiO(3−δ)) additive was synthesized and characterized by means of thermal analysis, dynamic mechanical analysis, and broadband dielectric spectroscopy at different filler contents; namel...

Descripción completa

Detalles Bibliográficos
Autores principales: Mazzapioda, Lucia, Navarra, Maria Assunta, Trequattrini, Francesco, Paolone, Annalisa, Elamin, Khalid, Martinelli, Anna, Palumbo, Oriele
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918271/
https://www.ncbi.nlm.nih.gov/pubmed/31683556
http://dx.doi.org/10.3390/membranes9110143
Descripción
Sumario:A composite membrane based on a Nafion polymer matrix incorporating a non-stoichiometric calcium titanium oxide (CaTiO(3−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 CaTiO(3−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.