Application of samaria doped sculptured ceria/La1-xSr xCo1-yFeyO3-δ in cathode of SOFCs at intermediate temperature

Ming Hsiu Wu, Jow Lay Huang, Kuan Zong Fung, Ding Fwu Lii

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Samaria-doped ceria (SDC)/La1-xSrxCo 1-yFeyO3-δ (LSCF) and yttria-stabilized zirconia (YSZ)/Ni were prepared as the cathode and anode of a solid oxide fuel cell (SOFC), respectively, using glancing angle deposition (GLAD) in electron beam physical vapor deposition. Fuel cell current-voltage measurements and electrochemical impedance spectroscopy were performed at 600 C. The investigations of the crystalline structures were examined using X-ray diffraction and transmission electron microscopy (TEM). A fluorite structure of SDC and the rhombohedral phase of the LSCF film were obtained. TEM images show that the diameter of each SDC single-crystalline column was approximately 50 nm. The results of scanning electron microscopy and electrochemical impedance spectroscopy indicate that high-density triple phase boundary (TPB) in the cathode enhances the performance of SOFC.

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalVacuum
Volume101
DOIs
Publication statusPublished - 2014 Jan 1

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

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