Abstract
This paper presents the main results obtained during the European project (FCH-JU) “LoLiPEM – Long-life PEM-FCH & CHP systems”. The paper describes significant improvements in the polymer electrolyte by tailored heat treatments for cross-linking of Sulfonated Poly(ether ether ketone) (SPEEK), obtained without any addition of cross-linker species. The reported properties of the ionomers include mechanical properties, gas permeability and ionic conductivity. Innovative gas-diffusion electrodes are fabricated by the electrochemical deposition of Pt catalyst; the fuel cell current-voltage characteristics are reported with Nafion and SPEEK-based binder. The fuel cell performances at 80 °C of membrane-electrode-assemblies containing a SPEEK membrane with a cross-linking degree of 32% are among the best in the literature compared with the PEMFC using membrane alternative than Nafion.
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Published on: International Journal of Hydrogen Energy 2016, 41, 1921-1934
Authors: G. Barbieri, A. Brunetti, M. L. Di Vona, E. Sgreccia, P. Knauth, H. Y. Hou, R. Hempelmann, F. Arena, L. D. Beretta, B. Bauer, M. Schuster, J. O. Ossó, L. F. Vega