Electrochemical vapor deposition synthesis and oxygen permeation properties of dense zirconia-yttria-ceria membranes

J. Han, Y. Zeng, G. Xomeritakis, Jerry Lin

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Thin (< 15 μm) dense ZrO2-Y2O3-CeO2 membranes with different CeO2 composition and membrane thickness were deposited on porous α-alumina substrates by the EVD process using corresponding metal chlorides as the precursors. CeO2 composition in the membrane is the same as CeCl3 concentration in the gas phase. The film growth rate for the EVD process is about 7 μm/h. The EVD prepared ZrO2-Y2O3-CeO2 membranes do not show single phase, but consist of two separate phases: a ZrO2-dominant cubic phase and a CeO2-dominant cubic phase. Under present conditions (950-1050°C, PO2(high) =0.21 atm, PO2(low) =0.01 atm), oxygen permeation through the EVD prepared ZrO2-Y2O3-CeO2 membranes is limited by the bulk diffusion in the membrane. The oxygen permeability of the ZrO2-Y2O3-CeO2 membranes is in the range of 1-4 × 10-11 mol/cm s, about an order of magnitude higher than that of ZrO2-Y2O3 membranes. The oxygen permeation flux through the EVD prepared ZrO2-Y2O3-CeO2 membrane increases with CeO2 composition in the film.

Original languageEnglish (US)
Pages (from-to)63-72
Number of pages10
JournalSolid State Ionics
Volume98
Issue number1-2
StatePublished - Jun 1 1997
Externally publishedYes

Fingerprint

Vapor deposition
Yttrium oxide
Cerium compounds
zirconium oxides
Permeation
Zirconia
vapor deposition
Oxygen
membranes
Membranes
oxygen
synthesis
Chemical analysis
zirconium oxide
yttria
Aluminum Oxide
Film growth
Chlorides
permeability
Alumina

Keywords

  • Ceramic membranes
  • Ceria
  • Electrochemical vapor deposition
  • Mixed conductor
  • Oxygen permeation
  • Yttria
  • Zirconia

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Electrochemical vapor deposition synthesis and oxygen permeation properties of dense zirconia-yttria-ceria membranes. / Han, J.; Zeng, Y.; Xomeritakis, G.; Lin, Jerry.

In: Solid State Ionics, Vol. 98, No. 1-2, 01.06.1997, p. 63-72.

Research output: Contribution to journalArticle

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AB - Thin (< 15 μm) dense ZrO2-Y2O3-CeO2 membranes with different CeO2 composition and membrane thickness were deposited on porous α-alumina substrates by the EVD process using corresponding metal chlorides as the precursors. CeO2 composition in the membrane is the same as CeCl3 concentration in the gas phase. The film growth rate for the EVD process is about 7 μm/h. The EVD prepared ZrO2-Y2O3-CeO2 membranes do not show single phase, but consist of two separate phases: a ZrO2-dominant cubic phase and a CeO2-dominant cubic phase. Under present conditions (950-1050°C, PO2(high) =0.21 atm, PO2(low) =0.01 atm), oxygen permeation through the EVD prepared ZrO2-Y2O3-CeO2 membranes is limited by the bulk diffusion in the membrane. The oxygen permeability of the ZrO2-Y2O3-CeO2 membranes is in the range of 1-4 × 10-11 mol/cm s, about an order of magnitude higher than that of ZrO2-Y2O3 membranes. The oxygen permeation flux through the EVD prepared ZrO2-Y2O3-CeO2 membrane increases with CeO2 composition in the film.

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