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http://dx.doi.org/10.5229/JKES.2004.7.2.094

Characteristics of Anode-supported Flat Tubular Solid Oxide Fuel Cell  

Kim Jong-Hee (Hydrogen Fuel Cells Research Department, Korea Institute of Energy Research, Department of Ceramic Engineering, Yonsei University)
Song Rak-Hyun (Hydrogen Fuel Cells Research Department, Korea Institute of Energy Research)
Publication Information
Journal of the Korean Electrochemical Society / v.7, no.2, 2004 , pp. 94-99 More about this Journal
Abstract
Anode-supported flat tubular solid oxide fuel cell (SOFC) was investigated to increase the cell power density. The anode-supported flat tube was fabricated by extrusion process. The porosity and pore size of Ni/YSZ ($8mol\%$ yttria-stabilized zirconia) cermet anode were $50.6\%\;and\;0.23{\mu}m$, respectively. The Ni particles in the anode were distributed uniformly and connected well to each other particles in the cermet anode. YSZ electrolyte layer and multilayered cathode composed of $LSM(La_{0.85}Sr_{0.15})_{0.9}MnO_3)/YSZ$ composite, LSM, and $LSCF(La_{0.6}Sr_{0.4}Co_{0.2}Fe_{0.7}O_3)$ were coated onto the anode substrate by slurry dip coating, subsequently. The anode-supported flat tubular cell showed a performance of $300mW/cm^2 (0.6V,\; 500 mA/cm^2)\;at\;500^{\circ}C$. The electrochemical characteristics of the flat tubular cell were examined by ac impedance method and the humidified fuel enhanced the cell performance. Areal specific resistance of the LSM-coated SUS430 by slurry dipping process as metallic interconnect was $148m{\Omega}cm^2\;at\;750^{\circ}C$ and then decreased to $148m{\Omega}cm^2$ after 450hr. On the other hand, the LSM-coated Fecralloy by slurry dipping process showed a high area specific resistance.
Keywords
Flat tubular SOFC; Anode-supported; Electrolyte; Metallic interconnect; Extrusion, Slurry dipping process;
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Times Cited By KSCI : 1  (Citation Analysis)
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