Thin yttria-stabilized zirconia electrolyte and transition layers fabricated by particle suspension spray

Ruiqiang Yan, Dong Ding, Lin Bin, Mingfei Liu, Guangyao Meng, Xingqin Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

In order to develop high performance intermediate temperature (<800 °C) solid oxide fuel cells (SOFCs) with a lower fabrication cost, a pressurized spray process of ceramic suspensions has been established to prepare both dense yttria-stabilized zirconia (YSZ) electrolyte membranes and transition anode layers on NiO + YSZ anode supports. A single cell with 10 μm thick YSZ electrolyte on a porous anode support and ∼20 μm thick cathode layer showed peak power densities of only 212 mW cm-2 at 700 °C and 407 mW cm-2 for 800 °C. While a cell with 10 μm thick YSZ electrolyte and a transition layer on the porous anode support using a ultra-fine NiO + YSZ powder showed peak power densities of 346 and 837 mW cm-2 at 700 and 800 °C, respectively. The dramatic improvement of cell performance was attributed to the much improved anode microstructure that was confirmed by both scanning electron microscopes (SEM) observation and impedance spectroscopy. The results have demonstrated that a pressurized spray coating is a suitable technique to fabricate high performance SOFCs and at lower cost.

Original languageEnglish (US)
Pages (from-to)567-571
Number of pages5
JournalJournal of Power Sources
Volume164
Issue number2
DOIs
StatePublished - Feb 10 2007

Keywords

  • Dense YSZ electrolyte
  • SOFCs
  • Suspension spray
  • Transition anode layer

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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