Fabrication of an anode-supported yttria-stabilized zirconia thin film for solid-oxide fuel cells via wet powder spraying

Wei Zhou, Huangang Shi, Ran Ran, Rui Cai, Zongping Shao, Wanqin Jin

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The wet powder spraying (WPS) technique was used for the deposition of dense and thin (Y2O3)0.08(ZrO2)0.92 (YSZ-8) films on an anode substrate being used for fuel cell applications. Both agglomeration of the powder and the presence of organics in the substrate have a significant effect on the quality and densification of the thin electrolyte layer. High-energy ball milling effectively broke up the agglomerates and enhanced the packing density of the green layer. Pre-calcination of the substrate at ∼1000 °C enhanced the match of sintering shrinkage between the electrolyte layer and the substrate and improved the quality of the YSZ-8 thin film significantly. Crack-free dual-layer assembly with a highly densified YSZ-8 film as thin as 10 μm was successfully fabricated by optimizing the fabrication parameters. The cells with a La0.8Sr0.2MnO3 cathode showed a high open circuit voltage of 1.071 V and a peak power density of 894 mW cm-2 at 850 °C operated with hydrogen fuel.

Original languageEnglish
Pages (from-to)229-237
Number of pages9
JournalJournal of Power Sources
Volume184
Issue number1
DOIs
StatePublished - 15 Sep 2008

Keywords

  • Solid-oxide fuel cells (SOFCs)
  • Thin electrolyte film
  • Wet powder spraying (WPS)
  • Yttria-stabilized zirconia (YSZ)

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