Fabrication of anode-supported tubular Ba(Zr0.1Ce 0.7Y0.2)O3-δ cell for intermediate temperature solid oxide fuel cells

Sung Hwan Min, Rak Hyun Song, Jin Goo Lee, Myoung Geun Park, Kwang Hyun Ryu, Yu Kwon Jeon, Yong-Gun Shul

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Abstract

The characteristics and performance of the anode-supported tubular cells with thin and dense Ba(Zr0.1Ce0.7Y0.2)O 3-δ (BZCY) electrolyte was investigated. The fine BZCY powder was prepared by a co-precipitation method. The Ni-BZCY anode tube was fabricated by an extrusion process. Ni-BZCY/BZCY nanocomposite slurry was coated on the anode tube as an anode fuctional layer (AFL) by using the dip-coating method. The BZCY electrolyte and LSCF-BZCY cathode was coated by vacuum slurry coating and dip-coating method, respectively. The anode tube had 0.381 μm in pore size (porosity: 34%). The impedance analysis of the tubular BZCY cells was conducted under open circuit condition. The ohmic resistance and the polarization resistance of the BZCY electrolyte were about 0.78 Ω cm 2 and 0.035 Ω cm2 at 700 C, respectively. The performance was measured under humidified H2 (5% H2O) atmosphere at 600-700 C. The maximum power density of the tubular BZCY cell was about 0.5 Wcm-2 at 700 C.

Original languageEnglish
Pages (from-to)1513-1518
Number of pages6
JournalCeramics International
Volume40
Issue number1 PART B
DOIs
Publication statusPublished - 2014 Jan 1

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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