Influence of sintering temperature on the polarization resistance of La0.6Sr0.4Co0.2Fe0.8O3-δ - SDC carbonate composite cathode

Nurul Akidah Baharuddin, Andanastuti Muchtar, Mahendra Rao Somalu, S. A Muhammed Ali, Hamimah Abd Rahman

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The effects of sintering temperature of an LSCF-samarium-doped ceria carbonate (SDCC) cathode composite film on its polarization resistance (Rp) were evaluated in this study. An LSCF-SDCC composite cathode was prepared for cathode film development by electrophoretic deposition (EPD). The LSCF-SDCC composite cathode was prepared at 50:50 weight percentage ratio. An EPD suspension which is based on an organic aqueous solution was used, and a mixture of ethanol and deionized water was used as medium with poly diallyl dimethyl ammonium chloride (PDADMAC) as a dispersing agent. SDCC substrate was used, and EPD was performed on both sides. A symmetrical cell with cathode composite LSCF-SDCC films on both sides of the substrate was subjected to sintering at five different temperatures (from 550°C to 750°C). A symmetrical cell was painted using silver paste before undergoing electrochemical performance test (air condition), in which the impedance, Z data, was measured. The effects of sintering temperature change on element content and film porosity were first investigated by energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy, and J-image analysis. Ceramic-based cathode LSCF-SDCC that was sintered at 600°C exhibited the lowest Rp at a value of 0.68 Ω when operated at 650°C. This study proved that EPD has potential in developing IT-LT solid oxide fuel cell cathode components with high electrochemical performance in terms of Rp values.

Original languageEnglish
Pages (from-to)115-121
Number of pages7
JournalCeramics - Silikaty
Volume60
Issue number2
DOIs
Publication statusPublished - 2016

Fingerprint

Samarium
samarium
Carbonates
Cerium compounds
carbonates
sintering
Cathodes
Sintering
cathodes
Polarization
composite materials
Composite materials
polarization
Temperature
temperature
cell cathodes
ammonium chlorides
performance tests
dispersing
Ammonium Chloride

Keywords

  • Ceramic
  • Microstructures
  • Polarization resistance
  • Sintering

ASJC Scopus subject areas

  • Ceramics and Composites
  • Analytical Chemistry
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Influence of sintering temperature on the polarization resistance of La0.6Sr0.4Co0.2Fe0.8O3-δ - SDC carbonate composite cathode. / Baharuddin, Nurul Akidah; Muchtar, Andanastuti; Somalu, Mahendra Rao; Ali, S. A Muhammed; Rahman, Hamimah Abd.

In: Ceramics - Silikaty, Vol. 60, No. 2, 2016, p. 115-121.

Research output: Contribution to journalArticle

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