Electrochemical performance of sol-gel derived La0.6Sr0.4CoO3-δ cathode material for proton-conducting fuel cell

A comparison between simple and advanced cell fabrication techniques

Abdullah Abdul Samat, Wan Nor Anasuhah Wan Yusoff, Nurul Akidah Baharuddin, Mahendra Rao Somalu, Andanastuti Muchtar, Nafisah Osman

Research output: Contribution to journalArticle

Abstract

In this study, the effects of different fabrication techniques on the electrochemical performance of solgel derived La0.6Sr0.4CoO3-δ (LSC) cathode material for intermediate temperature proton-conducting fuel cells were investigated. Single-phase, sub-micron LSC powder was used to prepare cathode slurries by a simple grinding-stirring (G-S) technique and an advanced ball milling-triple roll milling (BM-TRM) technique. The prepared G-S and BM-TRM cathode slurries were brush painted and screen printed, respectively, onto separate BaCe0.54Zr0.36Y0.1O2.95 (BCZY) proton-conducting electrolytes to fabricate symmetrical cells of LSC|BCZY|LSC. The thickness of LSC cathode layer prepared by brush painting and screen printing was 17 ± 0.5 μm and 7 ± 0.5μm, and the surface porosity of the layers was 32% and 27%, respectively. Electrochemical impedance spectroscopy analysis revealed that the layer deposited by screen printing had lower area specific resistance measured at 700 °C (0.25 cm2) than the layer prepared by brush painting of G-S slurry (1.50 cm2). The enhanced LSC cathode performance of the cell fabricated using BM-TRM assisted with screen printing is attributed to the improved particle homogeneity and network in the prepared slurry and the enhanced particle connectivity in the screen printed film.

Original languageEnglish
Pages (from-to)277-286
Number of pages10
JournalProcessing and Application of Ceramics
Volume12
Issue number3
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Sol-gels
Protons
Fuel cells
Cathodes
Screen printing
Milling (machining)
Ball milling
Fabrication
Brushes
Slurries
Painting
Electrochemical impedance spectroscopy
Powders
Electrolytes
Porosity
Temperature

Keywords

  • Brush painting
  • LSC cathode
  • Polarization resistance
  • Screen Printing
  • SOFC

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Electrochemical performance of sol-gel derived La0.6Sr0.4CoO3-δ cathode material for proton-conducting fuel cell : A comparison between simple and advanced cell fabrication techniques. / Samat, Abdullah Abdul; Yusoff, Wan Nor Anasuhah Wan; Baharuddin, Nurul Akidah; Somalu, Mahendra Rao; Muchtar, Andanastuti; Osman, Nafisah.

In: Processing and Application of Ceramics, Vol. 12, No. 3, 01.01.2018, p. 277-286.

Research output: Contribution to journalArticle

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