La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ cathode surface-treated with La 2 NiO 4+δ by aerosol-assisted chemical vapor deposition for high performance solid oxide fuel cells

Dong Young Jang, Gwon Deok Han, Hyeon Rak Choi, Min Sik Kim, Hyung Jong Choi, Joon Hyung Shim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, we evaluate lanthanum strontium cobalt ferrite (LSCF) surface-coated with lanthanum nickelate (LNO) fabricated by aerosol-assisted chemical vapor deposition (AACVD) for application in solid oxide fuel cells (SOFCs). The AACVD method successfully produces LNO in the desired composition and crystal structure. The deposited LNO is confirmed to form a dense and uniform layer along the nano-porous LSCF support. The LSCF with an optimal amount of LNO surface clearly enhances the SOFC performance, showing a power increase of approximately 60% at 600 °C in our experiment. This enhancement results from the reduction of both ohmic and polarization resistance, presumably due to improved cathodic surface kinetics and current collection. This AACVD LNO-treatment is also confirmed to be effective in improving long-term stability, significantly suppressing the power decrease observed in an untreated sample.

Original languageEnglish
JournalCeramics International
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Aerosol-assisted chemical vapor deposition
  • Cathode
  • Lanthanum nickelate
  • Lanthanum strontium cobalt ferrite
  • Solid oxide fuel cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'La <sub>0.6</sub> Sr <sub>0.4</sub> Co <sub>0.2</sub> Fe <sub>0.8</sub> O <sub>3-δ</sub> cathode surface-treated with La <sub>2</sub> NiO <sub>4+δ</sub> by aerosol-assisted chemical vapor deposition for high performance solid oxide fuel cells'. Together they form a unique fingerprint.

  • Cite this