Optimisation of screen-printed La0.6Sr0.4CoO3-δ cathode film for intermediate temperature proton-conducting solid oxide fuel cell application

Abdullah Abdul Samat, Mahendra Rao Somalu, Andanastuti Muchtar, Nurul Akidah Baharuddin, Nafisah Osman

Research output: Contribution to journalConference article

Abstract

The effect of thin film properties on the electrochemical performance of La0.6Sr0.4CoO3-δ (LSC) cathode was investigated. A single phase of sol-gel derived LSC cathode powder is produced using ethylene glycol (EG) and activated carbon (AC), pressed into a pellet and turned into an LSC cathode slurry. The slurry is screen printed with different printing numbers (2, 4, 6 and 8 times) on the BaCe0.54Zr0.36Y0.1O3 (BCZY) electrolyte substrate to fabricate LSC|BCZY|LSC symmetrical cell. The EG-based LSC cathode recorded the lowest area specific resistance (ASR) value (0.11 Ω cm2) in the symmetrical cell fabricated with printing number of 2 times (film thickness = 3.90 ± 0.18 μm, film porosity = 23.09 ± 0.42 %). The AC-based LSC cathode requires a high printing number of 6 times (film thickness = 6.76 ± 0.50 μm, film porosity = 21.98 ± 0.52 %) to obtain the lowest ASR value (0.15 Ω cm2) because the electrical conductivity of the AC-based LSC cathode is lower than that of the EG-based LSC cathode. Overall, this work shows that the variations in the ASR values of the same LSC materials prepared with different chemical additives are affected by the properties of the printed thin film.

Original languageEnglish
Article number012137
JournalIOP Conference Series: Earth and Environmental Science
Volume268
Issue number1
DOIs
Publication statusPublished - 2 Jul 2019
EventInternational Conference on Sustainable Energy and Green Technology 2018, SEGT 2018 - Kuala Lumpur, Malaysia
Duration: 11 Dec 201814 Dec 2018

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fuel cell
oxide
ethylene
activated carbon
temperature
slurry
porosity
electrolyte
electrical conductivity
gel
substrate

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Optimisation of screen-printed La0.6Sr0.4CoO3-δ cathode film for intermediate temperature proton-conducting solid oxide fuel cell application. / Abdul Samat, Abdullah; Somalu, Mahendra Rao; Muchtar, Andanastuti; Akidah Baharuddin, Nurul; Osman, Nafisah.

In: IOP Conference Series: Earth and Environmental Science, Vol. 268, No. 1, 012137, 02.07.2019.

Research output: Contribution to journalConference article

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abstract = "The effect of thin film properties on the electrochemical performance of La0.6Sr0.4CoO3-δ (LSC) cathode was investigated. A single phase of sol-gel derived LSC cathode powder is produced using ethylene glycol (EG) and activated carbon (AC), pressed into a pellet and turned into an LSC cathode slurry. The slurry is screen printed with different printing numbers (2, 4, 6 and 8 times) on the BaCe0.54Zr0.36Y0.1O3 (BCZY) electrolyte substrate to fabricate LSC|BCZY|LSC symmetrical cell. The EG-based LSC cathode recorded the lowest area specific resistance (ASR) value (0.11 Ω cm2) in the symmetrical cell fabricated with printing number of 2 times (film thickness = 3.90 ± 0.18 μm, film porosity = 23.09 ± 0.42 {\%}). The AC-based LSC cathode requires a high printing number of 6 times (film thickness = 6.76 ± 0.50 μm, film porosity = 21.98 ± 0.52 {\%}) to obtain the lowest ASR value (0.15 Ω cm2) because the electrical conductivity of the AC-based LSC cathode is lower than that of the EG-based LSC cathode. Overall, this work shows that the variations in the ASR values of the same LSC materials prepared with different chemical additives are affected by the properties of the printed thin film.",
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