BaZr0.1Ce0.7Y0.2O3-δ proton-conducting electrolyte prepared by gel-casting for low-temperature solid oxide fuel cells

Hanping Ding, Lin Bin, Daru Fang, Yingchao Dong, Songlin Wang, Xingqin Liu*, Guangyao Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

BaZr0.1Ce0.7Y0.2O3-δ (BZCY7) perovskite oxide was prepared by gel-casting and solid-state reaction techniques as proton-conducting electrolyte for low-temperature solid oxide fuel cells (LT-SOFCs). X-ray diffraction analysis indicated that the phase formation temperature of BZCY7 powder synthesized by gel-casting was 100-150 °C lower than that by solid-state reaction method. The BZCY7 electrolytes prepared by gel-casting exhibited better sintering activity and higher electrical conductivity. After sintering at 1550 °C for 5 h, the relative density and electrical conductivity of the gel-casting derived BZCY7 reached 95% and 5 × 10-3 S/cm in H2 (∼3% H2O) at 500 °C. However, for the solid-state reaction method, the sample had a relative density of 86% and electrical conductivity of 2 × 10-3 S/cm under the same condition.

Original languageEnglish (US)
Pages (from-to)364-369
Number of pages6
JournalJournal of Alloys and Compounds
Volume474
Issue number1-2
DOIs
StatePublished - Apr 17 2009

Keywords

  • BaZrCeYO
  • Gel-casting
  • Low-temperature solid oxide fuel cells
  • Proton-conducting electrolyte
  • Solid-state reaction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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