Development of ceria based SOFCs with a high performance La 0.6Sr0.4Co0.2Fe0.8O 3-δ-Ce0.9Gd0.1O1.95-Ag composite cathode

Y. Liu, K. Yasumoto, Shinichi Hashimoto, K. Takei, M. Mori, Y. Funahashi, Y. Fijishiro, A. Hirano, Y. Takeda

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this work, a microtubular cell consisting of a thin Ce 0.9Gd0.1O1.95 (GDC) electrolyte (thickness: below 10 μm) on a support NiO/GDC anode (1.8 mm outer diameter, 200 μm wall thickness) with a La0.6Sr0.4Co0.2Fe 0.8O3-δ/GDC functional cathode has been developed for intermediate/low temperature operation. The functional cathode was prepared by in situ infiltrating the electrochemically catalytic nano-Ag particles into the as-established 20 μm thick cathode. The as-proposed Ag-impregnation route ensures a very homogeneous particle dispersion and a good adhesion of Ag to the ceramic matrices. The cells were successfully operated to produce the maximum power densities of 0.41 W cm-2 (1.27 A cm-2, 0.32 V), 0.83 W cm-2 (2.23 A cm-2, 0.37 V), and 1.05 W cm-2 (2.39 A cm-2, 0.44 V) at 450°C, 500°C, and 550°C, respectively.

Original languageEnglish
Article number061003
JournalJournal of Fuel Cell Science and Technology
Volume7
Issue number6
DOIs
Publication statusPublished - 2010 Dec 1

Keywords

  • Ag-impregnation
  • La Sr Co Fe O
  • cell performance
  • gadolinium doped ceria
  • solid oxide fuel cells

ASJC Scopus subject areas

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

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