Screen-printed BaCe0.8Sm0.2O3-δ thin membrane solid oxide fuel cells with surface modification by spray coating

Lei Bi, Shangquan Zhang, Bin Lin, Shumin Fang, Changrong Xia, Wei Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Screen-printing technology was employed to fabricate BaCe0.8Sm0.2O3-δ (BCS) electrolyte membranes on porous NiO-BCS anode substrates. With a mixture of BCS and La0.7Sr0.3FeO3-σ as cathode, a single cell with 16 μm thick BCS electrolyte generated maximum power densities of 222, 141, 72 mW/cm2 at 700, 650 and 600 °C, respectively. After the electrolyte surface was modified by spray coating, the single cell with 16 μm thick BCS electrolyte generated maximum power densities of 352, 241, 125 mW/cm2 at 700, 650 and 600 °C, respectively. The improved performance of the fuel cell was attributed to the surface modification by spray coating promoting the adherence of the cathode to electrolyte, which was confirmed by both scanning electron microscope (SEM) observation and impedance measurement. The results illustrate that screen-printing technology with spray coating is a simple and low cost method for preparing thin electrolyte membranes of protonic ceramic fuel cells.

Original languageEnglish (US)
Pages (from-to)48-52
Number of pages5
JournalJournal of Alloys and Compounds
Volume473
Issue number1-2
DOIs
StatePublished - Apr 3 2009

Keywords

  • Ceramics
  • Electrochemical impedance spectroscopy
  • Fuel cells
  • Sintering

ASJC Scopus subject areas

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

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