, Volume 1, Issue 5–6, pp 438–442 | Cite as

Measurements and evaluation of the hydrogen uptake in Yb-doped strontium cerate

  • F. Krug
  • T. Schober
  • T. Springer


The water uptake of SrCe0.95Yb0.05O3-α was studied by in situ thermogravimetry. At different temperatures, mass changes due to variations of water vapour pressure were recorded; from these, the remaining vacancy concentrations were calculated. Further analysis in terms of the equilibrium constant was carried out without any assumptions on the initial vacancy concentration. The requirement of an ideal solution behaviour led us to the introduction of an effective vacancy concentration differing from the nominal one. At last, a universal mastercurve is presented showing the fraction of vacancies occupied as a function of a normalized pressure.


Hydrogen Analytical Chemistry Water Vapour Vapour Pressure Electronic Material 
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7. References

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    F. Krug, T. Schober, R. Paul, T. Springer, Solid State Ionics77, 185 (1995).CrossRefGoogle Scholar
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    W. Schilling, KFA Ferienschule 1995 über Elektrokeramik, ISBN 3-89336-146-4.Google Scholar

Copyright information

© IfI - Institute for Ionics 1995

Authors and Affiliations

  • F. Krug
    • 1
  • T. Schober
    • 1
  • T. Springer
    • 1
  1. 1.Institut für FestkörperforschungForschungszentrum JülichJülichGermany

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