Fabrication of porous LSCF-SDC carbonates composite cathode for solid oxide fuel cell (SOFC) applications

Raharjo Jarot, Andanastuti Muchtar, Wan Ramli Wan Daud, Norhamidi Muhamad, Majlan Edy Herianto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Composite cathodes made of perovskite La0.6Sr 0.4Co0.2Fe0.8O3 (LSCF) and SDC carbonates (SDC-(Li/Na)2CO3) were investigated in relation to their structure, morphology, thermal expansion coefficient and porosity. As a first step, the LSCF powder was prepared by sol-gel technique. This was followed by the preparation of the LSCF-SDC carbonates composite cathode by mixing the LSCF with SDC-(Li/Na)2CO3 electrolyte via solid state reaction in various compositions, i.e. 30, 40 and 50 wt.%, namely 70LSCF-30SDC7030, 60LSCF-40SDC7030 and 50LSCF-50SDC7030, respectively. The powder mixtures were then calcined at 680°C. The resultant powder was fine with surface area of about 3.39-7.42 m2/g and particle size of 0.56-0.66μm. The powder consists of two distinct phases, i.e. LSCF and SDC-(Li/Na)2CO3 as confirmed with x-ray diffraction. The microstructures were observed under scanning electron microscopy (SEM). Increasing the amount of the SDC-(Li/Na)2CO3 electrolyte in the composite cathode was found to bring the thermal expansion of the cathode closer to that of the electrolyte. The cathode pellets were later compacted at different pressures (27, 32 and 37 MPa) and sintered at 600°C. The optimum porosity (20.99-24.98%) was achieved for samples with SDC-(Li/Na) 2CO3 content of 30-50% sintered at 600oC and cold pressed at 37 MPa.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages179-184
Number of pages6
Volume471-472
DOIs
Publication statusPublished - 2011
Event8th International Conference on Composite Science and Technology, ICCST8 - Kuala Lumpur
Duration: 22 Mar 201124 Mar 2011

Publication series

NameKey Engineering Materials
Volume471-472
ISSN (Print)10139826

Other

Other8th International Conference on Composite Science and Technology, ICCST8
CityKuala Lumpur
Period22/3/1124/3/11

Fingerprint

Carbonates
Solid oxide fuel cells (SOFC)
Cathodes
Powders
Fabrication
Electrolytes
Composite materials
Thermal expansion
Porosity
Solid state reactions
Perovskite
Sol-gels
Diffraction
Particle size
X rays
Microstructure
Scanning electron microscopy
Chemical analysis

Keywords

  • Cathode
  • LaSrCoFe O (LSCF)
  • Microstructures
  • Porosity
  • Pressureless sintering
  • SDC-(Li/Na)CO
  • Thermal expansion coefficient (CTE)

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Jarot, R., Muchtar, A., Wan Daud, W. R., Muhamad, N., & Edy Herianto, M. (2011). Fabrication of porous LSCF-SDC carbonates composite cathode for solid oxide fuel cell (SOFC) applications. In Key Engineering Materials (Vol. 471-472, pp. 179-184). (Key Engineering Materials; Vol. 471-472). https://doi.org/10.4028/www.scientific.net/KEM.471-472.179

Fabrication of porous LSCF-SDC carbonates composite cathode for solid oxide fuel cell (SOFC) applications. / Jarot, Raharjo; Muchtar, Andanastuti; Wan Daud, Wan Ramli; Muhamad, Norhamidi; Edy Herianto, Majlan.

Key Engineering Materials. Vol. 471-472 2011. p. 179-184 (Key Engineering Materials; Vol. 471-472).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Jarot, R, Muchtar, A, Wan Daud, WR, Muhamad, N & Edy Herianto, M 2011, Fabrication of porous LSCF-SDC carbonates composite cathode for solid oxide fuel cell (SOFC) applications. in Key Engineering Materials. vol. 471-472, Key Engineering Materials, vol. 471-472, pp. 179-184, 8th International Conference on Composite Science and Technology, ICCST8, Kuala Lumpur, 22/3/11. https://doi.org/10.4028/www.scientific.net/KEM.471-472.179
Jarot, Raharjo ; Muchtar, Andanastuti ; Wan Daud, Wan Ramli ; Muhamad, Norhamidi ; Edy Herianto, Majlan. / Fabrication of porous LSCF-SDC carbonates composite cathode for solid oxide fuel cell (SOFC) applications. Key Engineering Materials. Vol. 471-472 2011. pp. 179-184 (Key Engineering Materials).
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abstract = "Composite cathodes made of perovskite La0.6Sr 0.4Co0.2Fe0.8O3 (LSCF) and SDC carbonates (SDC-(Li/Na)2CO3) were investigated in relation to their structure, morphology, thermal expansion coefficient and porosity. As a first step, the LSCF powder was prepared by sol-gel technique. This was followed by the preparation of the LSCF-SDC carbonates composite cathode by mixing the LSCF with SDC-(Li/Na)2CO3 electrolyte via solid state reaction in various compositions, i.e. 30, 40 and 50 wt.{\%}, namely 70LSCF-30SDC7030, 60LSCF-40SDC7030 and 50LSCF-50SDC7030, respectively. The powder mixtures were then calcined at 680°C. The resultant powder was fine with surface area of about 3.39-7.42 m2/g and particle size of 0.56-0.66μm. The powder consists of two distinct phases, i.e. LSCF and SDC-(Li/Na)2CO3 as confirmed with x-ray diffraction. The microstructures were observed under scanning electron microscopy (SEM). Increasing the amount of the SDC-(Li/Na)2CO3 electrolyte in the composite cathode was found to bring the thermal expansion of the cathode closer to that of the electrolyte. The cathode pellets were later compacted at different pressures (27, 32 and 37 MPa) and sintered at 600°C. The optimum porosity (20.99-24.98{\%}) was achieved for samples with SDC-(Li/Na) 2CO3 content of 30-50{\%} sintered at 600oC and cold pressed at 37 MPa.",
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AU - Muhamad, Norhamidi

AU - Edy Herianto, Majlan

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AB - Composite cathodes made of perovskite La0.6Sr 0.4Co0.2Fe0.8O3 (LSCF) and SDC carbonates (SDC-(Li/Na)2CO3) were investigated in relation to their structure, morphology, thermal expansion coefficient and porosity. As a first step, the LSCF powder was prepared by sol-gel technique. This was followed by the preparation of the LSCF-SDC carbonates composite cathode by mixing the LSCF with SDC-(Li/Na)2CO3 electrolyte via solid state reaction in various compositions, i.e. 30, 40 and 50 wt.%, namely 70LSCF-30SDC7030, 60LSCF-40SDC7030 and 50LSCF-50SDC7030, respectively. The powder mixtures were then calcined at 680°C. The resultant powder was fine with surface area of about 3.39-7.42 m2/g and particle size of 0.56-0.66μm. The powder consists of two distinct phases, i.e. LSCF and SDC-(Li/Na)2CO3 as confirmed with x-ray diffraction. The microstructures were observed under scanning electron microscopy (SEM). Increasing the amount of the SDC-(Li/Na)2CO3 electrolyte in the composite cathode was found to bring the thermal expansion of the cathode closer to that of the electrolyte. The cathode pellets were later compacted at different pressures (27, 32 and 37 MPa) and sintered at 600°C. The optimum porosity (20.99-24.98%) was achieved for samples with SDC-(Li/Na) 2CO3 content of 30-50% sintered at 600oC and cold pressed at 37 MPa.

KW - Cathode

KW - LaSrCoFe O (LSCF)

KW - Microstructures

KW - Porosity

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KW - SDC-(Li/Na)CO

KW - Thermal expansion coefficient (CTE)

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