Composite nafion membranes with catio3additive for possible applications in electrochemical devices
Artikel i vetenskaplig tidskrift, 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

Författare

Lucia Mazzapioda

Sapienza, Università di Roma

M.A. Navarra

Sapienza, Università di Roma

Francesco Trequattrini

Sapienza, Università di Roma

Annalisa Paolone

Istituto Dei Sistemi Complessi, Rome

Khalid Elamin

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Anna Martinelli Group

Anna Martinelli

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Anna Martinelli Group

Oriele Palumbo

Istituto Dei Sistemi Complessi, Rome

Membranes

2077-0375 (ISSN)

Vol. 9 11 143

Ämneskategorier

Polymerkemi

Keramteknik

Polymerteknologi

DOI

10.3390/membranes9110143

Mer information

Senast uppdaterat

2019-11-11