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Energies 2016, 9(4), 272; doi:10.3390/en9040272

Critical Filler Concentration in Sulfated Titania-Added Nafion™ Membranes for Fuel Cell Applications

1
Chemistry Department, University of Roma La Sapienza, P.le Aldo Moro 5, 00185 Rome, Italy
2
Insitute for Complex Systems, National Research Council (ISC-CNR), via dei Taurini, 00185 Rome, Italy
3
Science Department, University of Basilicata, v.le Ateneo Lucano 10, 85100 Potenza, Italy
4
Informatics Department, University of Verona, Strada le Grazie 15, 37134 Verona, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Vladimir Gurau
Received: 15 February 2016 / Revised: 22 March 2016 / Accepted: 29 March 2016 / Published: 6 April 2016
(This article belongs to the Special Issue Polymer Electrolyte Membrane Fuel Cells 2016)
View Full-Text   |   Download PDF [4316 KB, uploaded 6 April 2016]   |  

Abstract

In this communication we present a detailed study of Nafion™ composite membranes containing different amounts of nanosized sulfated titania particles, synthesized through an optimized one-step synthesis procedure. Functional membrane properties, such as ionic exchange capacity and water uptake (WU) ability will be described and discussed, together with thermal analysis, atomic force microscopy and Raman spectroscopy data. Also electrochemical properties such as proton conductivity and performances in hydrogen fuel cells will be presented. It has been demonstrated that a critical concentration of filler particles can boost the fuel cell performance at low humidification, exhibiting a significant improvement of the maximum power and current density delivered under 30% low-relative humidity (RH) and 70 °C with respect to bare Nafion™-based systems. View Full-Text
Keywords: functionalized TiO2 nanoparticles; composite Nafion™ membranes; polymer electrolyte membrane fuel cells (PEMFCs) functionalized TiO2 nanoparticles; composite Nafion™ membranes; polymer electrolyte membrane fuel cells (PEMFCs)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sgambetterra, M.; Brutti, S.; Allodi, V.; Mariotto, G.; Panero, S.; Navarra, M.A. Critical Filler Concentration in Sulfated Titania-Added Nafion™ Membranes for Fuel Cell Applications. Energies 2016, 9, 272.

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