A dense La(Sr)Fe(Mn)O3-δ nano-film anode for intermediate-temperature solid oxide fuel cells

Young Wan Ju, Junji Hyodo, Atsushi Inoishi, Shintaro Ida, Tatsumi Ishihara

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7 Citations (Scopus)

Abstract

To achieve high power density in intermediate-temperature solid oxide fuel cells (IT-SOFCs), we introduce a dense La(Sr)Fe(Mn)O3-δ (LSFM) nano-film anode between a Ni-Fe metallic substrate and a LaGaO3-based oxide electrolyte. Although a three-phase boundary (TPB) is believed to be required for anode active sites, the cell with the LSFM mixed-conductor thin-film anode exhibited much improved power density compared with that of the cell with a simple porous Ni-Fe anode. The maximum power density of the cell with the LSFM film was approximately 3.0 W cm-2 at 973 K. The improved power density was primarily attributed to the enhanced anodic activity. Furthermore, we observed that the dense LSFM thin-film anode is effective in increasing the fuel utilization of a Ni-Fe metallic anode supported cell. This suggests that a two-phase boundary (anode and gas phase) at the LaFeO3 perovskite is highly active towards the anodic reaction.

Original languageEnglish
Pages (from-to)3586-3593
Number of pages8
JournalJournal of Materials Chemistry A
Volume3
Issue number7
DOIs
Publication statusPublished - Feb 21 2015

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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