Chemically stable anode-supported solid oxide fuel cells based on Y-doped barium zirconate thin films having improved performance

Daniele Pergolesi*, Emiliana Fabbri, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

Anode-supported solid oxide fuel cells (SOFCs) based on thin BaZr 0.8Y0.2O3-δ (BZY) electrolyte films were fabricated by pulsed laser deposition (PLD) on sintered NiO-BZY composite anodes. After in situ reduction of NiO to Ni, the anode substrates became porous, while retaining good adhesion with the electrolyte. A slurry-coated composite cathode made of La0.6Sr0.4Co 0.2Fe0.8O3-δ (LSCF) and BaCe 0.9Yb0.1O3-δ (BCYb), specifically developed for proton conducting electrolytes, was used to assemble fuel cell prototypes. Depositing by PLD 100 nm thick LSCF porous films onto the BZY thin films was essential to improve the cathode/electrolyte adhesion. A power density output of 110 mW/cm2 at 600 °C, the largest reported value for an anode-supported fuel cell based on BZY at this temperature, was achieved. Electrochemical impedance spectroscopy (EIS) measurements were used to investigate the different contributions to the total polarization losses.

Original languageEnglish (US)
Pages (from-to)977-980
Number of pages4
JournalElectrochemistry Communications
Volume12
Issue number7
DOIs
StatePublished - Jul 1 2010

Keywords

  • Barium zirconate
  • HTPC
  • PLD
  • SOFC

ASJC Scopus subject areas

  • Electrochemistry

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