Abstract
The water uptake of several high temperature proton conductors was studied in situ by thermogravimetry. These materials were SrCe0.95Yb0.05O3-α, SrZr0.95Yb0.05O3-α and BaCa0.39Nb0.61O3-α. At different temperatures, the weights were recorded as a function of the applied water vapour pressures. From the observed mass changes, the proton contents were calculated. For all of the three systems, the water uptake could be described by an ideal solution process. Each individual system was characterized by two parameters: 1. The solution limit which is the maximum proton concentration that can be incorporated 2. The solution enthalphy which determines the pressure and temperature dependence of the uptake. The solution limits were compared with those expected from stoichiometric considerations. The enthalphies were considered with regard to a possible application as high temperature proton conductor.
Similar content being viewed by others
7. References
F. Krug, T. Schober and T. Springer, Solid State Ionics81, 111 (1995).
F. Krug, T. Schober, submitted to Jour. Amer. Cer. Soc.
F. Krug, T. Schober, submitted to Solid State Ionics.
F. Krug, T. Schober, R. Paul, T. Springer, Solid State Ionics77, 185 (1995).
F. Krug, T. Schober and T. Springer, Ionics5+6, 438 (1995).
W. Schilling, Proceedings of the ‘Ferienschule des IFF 1995’ (Forschungszentrum Jülich, Inst. für Festkörperforschung, 1995).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Krug, F. Comparison of the hydrogen uptake of different high temperature proton conductors. Ionics 2, 137–142 (1996). https://doi.org/10.1007/BF02375807
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02375807