Lattice distortions and oxygen vacancies produced in Au+- irradiated nanocrystalline cubic zirconia

Philip D. Edmondson, William J. Weber, Fereydoon Namavar, Yanwen Zhang

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The oxygen ion conductivity, attributed to an oxygen vacancy mechanism, of yttria-stabilized zirconia membranes used in solid oxide fuel cells is restricted due to trapping limitations. In this work, a high concentration of oxygen vacancies has been deliberately introduced into nanocrystalline stabilizer-free zirconia through ion-irradiation. Oxygen vacancies with different charge states can be produced by varying irradiation temperatures. Due to the reduced trapping sites and high oxygen vacancy concentration, this work suggests that the efficiency of solid oxide fuel cells can be improved.

Original languageEnglish (US)
Pages (from-to)675-678
Number of pages4
JournalScripta Materialia
Volume65
Issue number8
DOIs
StatePublished - Oct 1 2011

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Keywords

  • Glancing incidence X-ray diffraction
  • Ion-beam modification
  • Lattice spacing
  • Nanocrystalline zirconia
  • Oxygen vacancy

ASJC Scopus subject areas

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

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