Design and preparation of SOFC unit cells using scandia-stabilized zirconia electrolyte for intermediate temperature operation

Sung Chul Park, Jong Jin Lee, Seung Ho Lee, Joo Ho Moon, Sang Hoon Hyun

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A solid oxide fuel cell unit cell based on a scandia-stabilized zirconia (ScSZ) electrolyte for intermediate temperature operation (below 650°C) was manufactured as an anode-supported unit cell via uniaxial pressing, dip-coating, and screen printing methods. The nanocomposite powders used to improve anode performance were synthesized by selectively coating nanosized NiO particles on ScSZ core particles by the Pechini process. Anode-supported ScSZ electrolytes were fabricated by dip-coating a slurry of Ni-ScSZ composite powder on a die-pressed anode pellet, followed by dip-coating of the electrolyte ScSZ slurry. The lanthanum strontium manganite (LSM)-ScSZ cathode and the samarium doped ceria (SDC) interlayer were formed on the anode-supported ScSZ electrolyte using the screen printing method. The lanthanum strontium cobalt ferrite (LSCF)-SDC cathode was also formed on the SDC interlayer. The anode-supported unit cells designed and prepared in this study had a power density of 0.61 W cm -2 at 800°C. Moreover, the unit cell structured by the functional layer and the LSCF cathode demonstrated excellent performance with a power density of 0.49 W cm -2 at 650°C.

Original languageEnglish
Article number044501
JournalJournal of Fuel Cell Science and Technology
Volume8
Issue number4
DOIs
Publication statusPublished - 2011 Apr 11

Fingerprint

Scandium
Solid oxide fuel cells (SOFC)
Zirconia
Electrolytes
Anodes
Samarium
Lanthanum
Strontium
Cerium compounds
Coatings
Cathodes
Screen printing
Temperature
Powders
Ferrite
Cobalt
zirconium oxide
Nanocomposites
Composite materials

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Design and preparation of SOFC unit cells using scandia-stabilized zirconia electrolyte for intermediate temperature operation",
abstract = "A solid oxide fuel cell unit cell based on a scandia-stabilized zirconia (ScSZ) electrolyte for intermediate temperature operation (below 650°C) was manufactured as an anode-supported unit cell via uniaxial pressing, dip-coating, and screen printing methods. The nanocomposite powders used to improve anode performance were synthesized by selectively coating nanosized NiO particles on ScSZ core particles by the Pechini process. Anode-supported ScSZ electrolytes were fabricated by dip-coating a slurry of Ni-ScSZ composite powder on a die-pressed anode pellet, followed by dip-coating of the electrolyte ScSZ slurry. The lanthanum strontium manganite (LSM)-ScSZ cathode and the samarium doped ceria (SDC) interlayer were formed on the anode-supported ScSZ electrolyte using the screen printing method. The lanthanum strontium cobalt ferrite (LSCF)-SDC cathode was also formed on the SDC interlayer. The anode-supported unit cells designed and prepared in this study had a power density of 0.61 W cm -2 at 800°C. Moreover, the unit cell structured by the functional layer and the LSCF cathode demonstrated excellent performance with a power density of 0.49 W cm -2 at 650°C.",
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Design and preparation of SOFC unit cells using scandia-stabilized zirconia electrolyte for intermediate temperature operation. / Park, Sung Chul; Lee, Jong Jin; Lee, Seung Ho; Moon, Joo Ho; Hyun, Sang Hoon.

In: Journal of Fuel Cell Science and Technology, Vol. 8, No. 4, 044501, 11.04.2011.

Research output: Contribution to journalArticle

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