Fabrication and characterization of easily sintered and stable anode-supported proton-conducting membranes

Lei Bi, Zetian Tao, Cong Liu, Wenping Sun, Haiqian Wang, Wei Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

Proton-conducting BaCeO3 membranes with different In-doping levels (from 10 to 30%) were fabricated on NiO-based anode substrates. Indium, which was only used as a trivalent element to create oxygen vacancies in BaCeO3 previously, was found to have the function of stabilizing BaCeO3 in this study. The In-doped BaCeO3 showed improved chemical stability against CO2, while even the traditional BaCeO3 substituting with a small amount of Zr decomposed in the same environment. Furthermore, unlike other strategies for stabilizing BaCeO3, the supported In-doped BaCeO3 membrane became dense after firing at relatively low temperatures. We also investigated the influences of the sintering temperatures and the In-doping levels on the densification and the electrical properties of the supported BaCeO3 membranes, which revealed that the In-doping strategy increased both the chemical stability and sinterability for BaCeO3 with little loss of electrical performance.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalJournal of Membrane Science
Volume336
Issue number1-2
DOIs
StatePublished - Jul 1 2009

Keywords

  • BaCeO
  • Chemical stability
  • Proton conductor
  • Sinterability
  • Supported membrane

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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