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Functionalized ORMOSIL-Based Hybrid Membranes for Polymer Electrolyte Membrane Fuel Cells

Published online by Cambridge University Press:  01 February 2011

Silvia Licoccia
Affiliation:
licoccia@uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Via della Ricerca Scientifica 1, Rome, N/A, 00133, Italy, +39.06.72594386, +39.0672594328
Alessandra D'Epifanio
Affiliation:
alessandra.d.epifanio@uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Maria Luisa Di Vona
Affiliation:
divona@uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Zakarya Ahhmed
Affiliation:
ahmed@ing.uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Serafina Belitto
Affiliation:
bellitto@ing.uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Debora Marani
Affiliation:
debo75@tiscali.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Cadia D'Ottavi
Affiliation:
d.ottavi@uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Emiliano Moroni
Affiliation:
dio_vi_fulmini@libero.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
Marcella Trombetta
Affiliation:
m.trombetta@unicampus.it, Universita' Campus Biomedico, Interdisciplinary Center for Biomedical Research, Laboratory of Biomaterials, Italy
Enrico Traversa
Affiliation:
traversa@uniroma2.it, University of Rome Tor Vergata, Chemical Sciences and Technologies, Italy
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Abstract

Sulfonated poly ether ether ketone (SPEEK) with a high degree of sulfonation (DS = 0.9) was mixed with a modified silane bearing a sulfonic acid function (sulfonated diphenylsilanediole, SDPDO).

Homogeneous composite membranes with several SPEEK:SDPDO ratios, were obtained. The addition of the ormosil significantly improved the water uptake and solubility properties of pure SPEEK.

The structural and electrochemical characteristics of the composite membranes were investigated by means of thermogravimetric analysis (TG), field emission scanning electron microscopy (FE-SEM), and electrochemical impedance spectroscopy (EIS). The conductivity values of the composites SPEEK/SDPDO demonstrated that they possess good proton transport characteristics, thus being suitable for application in Polymer Electrolyte Fuel Cells operating at intermediate temperature.

Type
Research Article
Copyright
Copyright © Materials Research Society 2006

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References

1. Alberti, G., Casciola, M., Annu. Rev. Mater. Res. 33, 129 (2003).CrossRefGoogle Scholar
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