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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 23:59 |
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Conference: Bucharest University Faculty of Physics 2007 Meeting
Section: Polymer Physics
Title:
Composite solid acid -polymer membranes for fuel cell
Authors:
A. Andronie, A. Morozan, C. Nastase, S. Vulpe, A. Dumitru, F. Nastase and I. Stamatin
Affiliation:
3Nano-SAE Research Centre, University of Bucharest, PO Box MG-38, Bucharest-Magurele, Romania
E-mail
adriana.andronie@gmail.com
Keywords:
composite membrane, solid acid, superprotonic transition
Abstract:
CsHSO4, a solid acid characterized by a transition to superprotonic phase at 141`C of several-order-of-magnitude increase in hydrogen ion conductivity, has potential for implementing in fuel cells at large scale. Inconveniences encountered with CsHSO4-electrolyte pellets come from both mechanical instabilities and hydrogen sulphide releasing in operation time over superprotonic transition at high temperatures. Therefore, our research focused on composites structures made of solid acid (CsHSO4) and high temperature stable polymer matrix exploiting percolation phenomenon for proton conduction, stability to H2S releasing and mechanical resistance. Electrochemical and structural properties of composite CsHSO4/polymer membranes were investigated. The obtained structures have been investigated by Raman, FT-IR and AFM techniques. The characterization of electrochemical behavior was performed by EIS (electrochemical impedance spectroscopy). The protonic conductivity of composites structures made of solid acid (CsHSO4) was studied using BT-112 BekkTech Conductivity Cell. Analysis of the electrochemical parameters shows an appropriate behavior of the composite membranes for implementing in fuel cells.
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