Membranes for high temperature PEMFC (Comunicazione a convegno)

  • Membranes for high temperature PEMFC (Comunicazione a convegno) (literal)
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Passalacqua Enza (2010)
    Membranes for high temperature PEMFC
    in 9th International Symposium on Advances in Electrochemical Science and Technology (ISAEST-9), Chennai (India), December 2-4, 2010
  • Passalacqua Enza (literal)
  • CNR-ITAE (literal)
  • Membranes for high temperature PEMFC (literal)
  • Polymer Electrolyte Fuel Cells (PEFCs) represent an important research area because they offer a highly efficient energy source and low environmental impact. Several important technological and commercial reasons suggest the H2/Air PEM fuel cells to be operated at temperatures above 80°C: enhancement of electrochemical kinetics rates, simplification of water management and cooling, waste heat recovery and catalyst tolerance to reformed hydrogen. Therefore, high-temperature PEM fuel cells (HT-PEMFC) are considered to be the next generation of fuel cells. Several polymers and membranes have been proposed to work at temperatures above 90°C, but few results on the high temperature (HT) membrane-electrodes assemblies (MEAs) application in stack configuration have been reported. In this paper, the CNR-ITAE experience and progress on the development of membranes for HT-PEMFC and their application in a stack are described. In this field two different approaches have been taken into consideration: ? Nafion membranes prepared by addition of inorganic oxides (SiO2, TiO2, ZrO2 etc.) to improve hygroscopicity and mechanical properties or by addition of heteropolyacids (phosphotungstic acid) immobilized on inorganic oxides to improve the proton conduction through the acid functionality. ? Sulphonated polyetheretherketone (PEEK) based membranes obtained through the polymer functionalization, acid/base polymers blends and hybrid inorganic/organic blend formation. The polymeric films, obtained by cast of the dispersion of the polymers in the solvent have been characterised in a range of temperature between 80 and 120°C with different gas humidity. Results on swelling characteristics, proton conductivity and long-term degradation of the membranes are reported. (literal)
Prodotto di
Autore CNR

Incoming links:

Autore CNR di