Unraveling the defect chemistry and proton uptake of yttrium-doped barium zirconate

Yoshihiro Yamazaki, Chih Kai Yang, Sossina M. Haile

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

A review of the experimental literature documenting water uptake in yttrium-doped barium zirconate in combination with new results obtained here show that much of the observed scatter can be explained in terms of barium deficiency, which furthermore induces a lowering in cell volume. In addition, through a comparison of weight changes under regular and heavy water vapor pressure, strong evidence is found for bulk oxidation of the oxide by water simultaneous with hydration.

Original languageEnglish (US)
Pages (from-to)102-107
Number of pages6
JournalScripta Materialia
Volume65
Issue number2
DOIs
StatePublished - Jul 2011

Keywords

  • Barium zirconate
  • Defect chemistry
  • Fuel cells
  • Proton-conducting oxides
  • Water uptake

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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