Composite nafion membranes with catio3additive for possible applications in electrochemical devices
Journal article, 2019

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.

Nafion

CaTiO 3-δ

Composite electrolyte

Inorganic filler

Author

Lucia Mazzapioda

Sapienza University of Rome

M.A. Navarra

Sapienza University of Rome

Francesco Trequattrini

Sapienza University of Rome

Annalisa Paolone

Istituto Dei Sistemi Complessi, Rome

Khalid Elamin

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Anna Martinelli Group

Anna Martinelli

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Anna Martinelli Group

Oriele Palumbo

Istituto Dei Sistemi Complessi, Rome

Membranes

2077-0375 (ISSN)

Vol. 9 11 143

Subject Categories

Polymer Chemistry

Ceramics

Polymer Technologies

DOI

10.3390/membranes9110143

More information

Latest update

11/11/2019