Development and characterization of cathode-supported SOFCs by single-step cofiring fabrication for intermediate temperature operation

Yu Liu, Shinichi Hashimoto, Katsuhito Takei, Masashi Mori, Yoshihiro Funahashi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this study, a single-step cofiring through the extrusion molding and wet-ceramic coating technique was developed to fabricate a cathode-supported microtubular cell. The cell is consisting of a Ce 0.9 Gd 0.1 O 1.95 (GDC) electrolyte with a NiO-GDC anode on a porous La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ/GDC tube (460 μm wall thickness and 2.26 mm diameter). Densification of the ceria membrane (thickness <20 μm) was successful by cosintering the laminated thin electrolyte and the anode with the cathode at 1200°C. Compared with that fabricated by the conventional two-step cofiring process, the cell showed an improved performance due to the increased anode sintering temperature, which leads to an improved anode /electrolyte interfacial property. The cell having 2 cm tube length fed with humidified 30 vol % H 2-Ar (3% H 2O) produced the maximum power densities of 0.09 W cm 2, 0.08 W cm -2, and 0.05 W cm -2, at 600°C, 550°C, and 500° C, respectively.

Original languageEnglish
Article number031209
JournalJournal of Fuel Cell Science and Technology
Volume5
Issue number3
DOIs
Publication statusPublished - 2008 Aug 1

Keywords

  • Cathode-supported SOFC
  • La Sr Co Fe O gadolinium-doped ceria oxide
  • Single-step cofiring
  • Solid oxide fuel cells

ASJC Scopus subject areas

  • Energy (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering
  • Mechanics of Materials
  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology

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