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 Citations (Scopus)

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

Fingerprint

Oxygen vacancies
zirconium oxides
Zirconia
oxygen
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
trapping
Yttria stabilized zirconia
Ion bombardment
oxygen ions
yttria-stabilized zirconia
ion irradiation
Irradiation
Ions
Oxygen
membranes
Membranes
conductivity
irradiation
zirconium oxide

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

Cite this

Lattice distortions and oxygen vacancies produced in Au+- irradiated nanocrystalline cubic zirconia. / Edmondson, Philip D.; Weber, William J.; Namavar, Fereydoon; Zhang, Yanwen.

In: Scripta Materialia, Vol. 65, No. 8, 01.10.2011, p. 675-678.

Research output: Contribution to journalArticle

Edmondson, Philip D. ; Weber, William J. ; Namavar, Fereydoon ; Zhang, Yanwen. / Lattice distortions and oxygen vacancies produced in Au+- irradiated nanocrystalline cubic zirconia. In: Scripta Materialia. 2011 ; Vol. 65, No. 8. pp. 675-678.
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