GdBaCo2O5+x layered perovskite as an intermediate temperature solid oxide fuel cell cathode

Albert Tarancón, Alejandro Morata, Guilhem Dezanneau, Stephen J. Skinner, John A. Kilner, Sònia Estradé, F. Hernández-Ramírez, F. Peiró, J. R. Morante

Research output: Contribution to journalArticlepeer-review

Abstract

GdBaCo2O5+x (GBCO) was evaluated as a cathode for intermediate-temperature solid oxide fuel cells. A porous layer of GBCO was deposited on an anode-supported fuel cell consisting of a 15 μm thick electrolyte of yttria-stabilized zirconia (YSZ) prepared by dense screen-printing and a Ni-YSZ cermet as an anode (Ni-YSZ/YSZ/GBCO). Values of power density of 150 mW cm-2 at 700 °C and ca. 250 mW cm-2 at 800 °C are reported for this standard configuration using 5% of H2 in nitrogen as fuel. An intermediate porous layer of YSZ was introduced between the electrolyte and the cathode improving the performance of the cell. Values for power density of 300 mW cm-2 at 700 °C and ca. 500 mW cm-2 at 800 °C in this configuration were achieved.

Original languageEnglish
Pages (from-to)255-263
Number of pages9
JournalJournal of Power Sources
Volume174
Issue number1
DOIs
Publication statusPublished - 22 Nov 2007
Externally publishedYes

Keywords

  • Cathode
  • GBCO
  • Layered perovskite
  • SOFC
  • Screen printing

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