Stable, easily sintered BaCe0.5Zr0.3Y0.16Zn0.04O3-δ electrolyte-based proton-conducting solid oxide fuel cells by gel-casting and suspension spray

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Protonic ceramic membrane fuel cells (PCMFCs) based on oxide proton conductors exhibit more advantages than traditional solid oxide fuel cells (SOFCs) based on oxygen-ion conducting electrolytes, such as low activation energy and high energy efficiency. In order to develop a simple and cost-effective route to fabricate PCMFCs with SrCo0.9Sb0.1O3-δ (SCS) cubic perovskite cathode, a dense BaCe0.5Zr0.3Y0.16Zn0.04O3-δ (BCZYZn) electrolyte was fabricated in situ metal oxide on a porous anode support by gel-casting and suspension spray, which is cost-effective, easy to realize, and suitable for mass-production. The key part of this process is to directly spray well-mixed suspension of BaCO3, CeO2, ZrO2, Y2O3 and ZnO instead of pre-synthesized BCZYZn ceramic powder on the anode substrate. With SCS cubic perovskite cathode synthesized by gel-casting on the bi-layer, single cells were assembled and tested with H2 as fuel and the static air as oxidant. An open-circuit potential of 0.987 V, a maximum power density of 364 mW cm-2, and a low polarization resistance of the electrodes of 0.07 Ω cm2 was achieved at 700 °C.

Original languageEnglish (US)
Pages (from-to)590-593
Number of pages4
JournalJournal of Alloys and Compounds
Volume478
Issue number1-2
DOIs
StatePublished - Jun 10 2009

Keywords

  • Chemical synthesis
  • Electrode materials
  • Ionic conduction
  • Thin films
  • X-ray diffraction

ASJC Scopus subject areas

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

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