Thin film (La0.7Sr0.3)0.95MnO 3-δ fabricated by pulsed laser deposition and its application as a solid oxide fuel cell cathode for low-temperature operation

Ho Sung Noh, Ji Won Son, Heon Lee, Hae Ryoung Kim, Jong Ho Lee, Hae Weon Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The feasibility of using the thin film technology in utilizing lanthanum strontium manganite (LSM) for a solid oxide fuel cell (SOFC) cathode in a low-temperature regime is investigated in this study. Thin film LSM cathodes were fabricated using pulsed laser deposition (PLD) on anode-supported SOFCs with yttria-stabilized zirconia (YSZ) electrolytes. Although cells with a 1 μmthick LSM cathode showed poor low-temperature cell performance compared to that of a cell with a bulk-processed cathode due to the lack of a triple-phase boundary length, the cell with 200 nm-thick gadolinia-doped ceria (GDC) inserted between the LSM and YSZ showed enhanced performance and more stable operation characteristics in a comparison of a cell without a GDC layer. We postulate that the GDC layer likely improved the cathode adhesion, therefore contributing to the improvement of the cell performance instead of serving as an interfacial reaction buffer.

Original languageEnglish
Pages (from-to)75-81
Number of pages7
JournalJournal of the Korean Ceramic Society
Volume47
Issue number1
DOIs
Publication statusPublished - 2010 Jan 31

Keywords

  • Lanthanum strontium manganite (lsm)
  • Pulsed laser deposition (pld)
  • Solid oxide fuel cell(sofc)
  • Thin film cathode

ASJC Scopus subject areas

  • Ceramics and Composites

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