Novel redox reversible oxide, Sr-doped cerium orthovanadate to metavanadate

Christophe T. G. Petit, Rong Lan, Peter I. Cowin, John T. S. Irvine, Shanwen Tao

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A-site substituted cerium metavanadates, Ce1-xSrxVO3, were synthesised by solid-state reactions from single-phase powders of the corresponding orthovanadates. All samples were found to exhibit an orthorhombic perovskite structure of space group Pnma (62) with a = 5.5181 (3), b = 7.7853 (2) and c = 5.5155 (4) angstrom for Ce0.85Sr0.15VO3. Conductivity measurements were performed in air and in dry 5% H-2-Ar with conductivity values at 700 degrees C ranging from 0.1 to 2.5 S cm(-1) with peaking at 6 S cm(-1) in reduced atmosphere. X-Ray diffraction patterns and thermal analyses have shown that the reduction of Sr-doped CeVO3 from the equivalent orthovanadate is redox phase reversible without formation of parasitic phases while the undoped CeVO4 is not.

LanguageEnglish
Pages525-531
Number of pages7
JournalJournal of Materials Chemistry
Volume21
Issue number2
Early online date27 Oct 2010
DOIs
Publication statusPublished - 2011

Fingerprint

Cerium
Vanadates
Solid state reactions
Perovskite
Oxides
Diffraction patterns
Powders
X ray diffraction
Air
Oxidation-Reduction
Hot Temperature

Keywords

  • fuel cell anodes
  • magnetic properties
  • perovskites
  • CEVO4
  • CA
  • transport
  • vanadate
  • crystal
  • PR
  • ND

Cite this

Petit, C. T. G., Lan, R., Cowin, P. I., Irvine, J. T. S., & Tao, S. (2011). Novel redox reversible oxide, Sr-doped cerium orthovanadate to metavanadate. Journal of Materials Chemistry, 21(2), 525-531. https://doi.org/10.1039/c0jm02669g
Petit, Christophe T. G. ; Lan, Rong ; Cowin, Peter I. ; Irvine, John T. S. ; Tao, Shanwen. / Novel redox reversible oxide, Sr-doped cerium orthovanadate to metavanadate. In: Journal of Materials Chemistry. 2011 ; Vol. 21, No. 2. pp. 525-531.
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Novel redox reversible oxide, Sr-doped cerium orthovanadate to metavanadate. / Petit, Christophe T. G.; Lan, Rong; Cowin, Peter I.; Irvine, John T. S.; Tao, Shanwen.

In: Journal of Materials Chemistry, Vol. 21, No. 2, 2011, p. 525-531.

Research output: Contribution to journalArticle

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