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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...

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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
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author Mazzapioda, Lucia
Navarra, Maria Assunta
Trequattrini, Francesco
Paolone, Annalisa
Elamin, Khalid
Martinelli, Anna
Palumbo, Oriele
author_facet Mazzapioda, Lucia
Navarra, Maria Assunta
Trequattrini, Francesco
Paolone, Annalisa
Elamin, Khalid
Martinelli, Anna
Palumbo, Oriele
author_sort Mazzapioda, Lucia
collection PubMed
description 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.
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spelling pubmed-69182712019-12-24 Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices Mazzapioda, Lucia Navarra, Maria Assunta Trequattrini, Francesco Paolone, Annalisa Elamin, Khalid Martinelli, Anna Palumbo, Oriele Membranes (Basel) Article 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. MDPI 2019-10-31 /pmc/articles/PMC6918271/ /pubmed/31683556 http://dx.doi.org/10.3390/membranes9110143 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mazzapioda, Lucia
Navarra, Maria Assunta
Trequattrini, Francesco
Paolone, Annalisa
Elamin, Khalid
Martinelli, Anna
Palumbo, Oriele
Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices
title Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices
title_full Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices
title_fullStr Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices
title_full_unstemmed Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices
title_short Composite Nafion Membranes with CaTiO(3−δ) Additive for Possible Applications in Electrochemical Devices
title_sort composite nafion membranes with catio(3−δ) additive for possible applications in electrochemical devices
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918271/
https://www.ncbi.nlm.nih.gov/pubmed/31683556
http://dx.doi.org/10.3390/membranes9110143
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