Electrochemical Properties of Cathode for Solid Oxide Fuel Cell with Gd-Doped Ceria Electrolyte

2007 ◽  
Vol 26-28 ◽  
pp. 275-278 ◽  
Author(s):  
Taro Shimonosono ◽  
Go Hiramatsu ◽  
Yoshihiro Hirata ◽  
Soichiro Sameshima ◽  
Naoki Matsunaga ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Indium Tin Oxide ◽  
Voltage Drop ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Ohmic Resistance ◽  
Perovskite Type Oxide ◽  
Terminal Voltage ◽  
Perovskite Type ◽  
Ceria Electrolyte

Electrochemical properties (terminal voltage, ohmic resistance and overpotential) were measured for the cells of indium tin oxide (ITO, 90 mass% In2O3-10 mass% SnO2), perovskite-type oxide La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) or SrRuO3 cathode / Gd-doped ceria electrolyte (Ce0.8Gd0.2O1.9, GDC, 600-700 μm thick) / Ni-GDC anode using 3 vol% H2O-containing H2 fuel at 873 and 1073 K. The highest power density was obtained for the cell with SrRuO3 cathode, and was 36 and 328 mW/cm2 at 873 and 1073 K, respectively. The voltage drop was larger for the cathode than for the anode. Both of the ohmic resistance and overpotential were lowest for the SrRuO3 cathode among the investigated cathodes.

Electrochemical Properties of Cathode for Solid Oxide Fuel Cell

2007 ◽  
Vol 352 ◽  
pp. 255-258 ◽  
Author(s):  
Taro Shimonosono ◽  
Go Hiramatsu ◽  
Yoshihiro Hirata ◽  
Soichiro Sameshima ◽  
Naoki Matsunaga ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Indium Tin Oxide ◽  
Voltage Drop ◽  
Maximum Power ◽  
Ohmic Resistance ◽  
Oxide Cathode ◽  
Terminal Voltage ◽  
Power Densities ◽  
Perovskite Type ◽  
Ceria Electrolyte

Electrochemical properties (terminal voltage, ohmic resistance and overpotential) were measured for the cell of indium tin oxide cathode (ITO, 90 mass% In2O3-10 mass% SnO2) or perovskite-type oxide cathode La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) / Gd-doped ceria electrolyte (Ce0.8Gd0.2O1.9, GDC, 600-700 μm thick)/Ni-GDC anode using 3 vol% H2O-containing H2 fuel at 873 and 1073 K. The maximum power densities for the cell with ITO cathode at 873 and 1073 K were 21 and 71 mW/cm2, respectively. Similarly, the maximum power density with LSCF was 12 and 113 mW/cm2 at 873 and 1073 K, respectively. The voltage drop was larger for the cathode than for the electrolyte or anode. The overpotential of the LSCF cathode was comparable to the ohmic resistance.

Electrochemical Properties of Perovskite Cathode for Solid Oxide Fuel Cell

2007 ◽  
Vol 544-545 ◽  
pp. 985-988 ◽  
Author(s):  
Go Hiramatsu ◽  
Yoshihiro Hirata ◽  
Soichiro Sameshima ◽  
Naoki Matsunaga
Keyword(s):  
Fuel Cell ◽  
Electrochemical Properties ◽  
Electric Power ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Maximum Power Density ◽  
Ohmic Resistance ◽  
Terminal Voltage ◽  
Ceria Electrolyte

Gd-doped ceria electrolyte (Ce0.8Gd0.2O1.9, GDC, 700 μm thick), 30 vol% Ni-GDC cermet anode and perovskite cathode La0.6Sr0.4CoO3 (LSC) or La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) were used to evaluate the electric power of the cell using 3 vol%-H2O containing H2 fuel at 873 and 1073 K. Terminal voltage, ohmic resistance and overpotential were analyzed during the operation of the cell. The maximum power density with LSC and LSCF cathode was 53 and 113 mW/cm2 at 1073 K, respectively. The ohmic resistance and overpotential at the cathode was smaller for LSCF than for LSC.

scholarly journals Electrochemical Properties of Solid Oxide Fuel Cell with Sm-Doped Ceria Electrolyte and Cermet Electrodes

2005 ◽  
Vol 113 (1321) ◽  
pp. 597-604 ◽  
Author(s):  
Yoshihiro HIRATA ◽  
Shinya YOKOMINE ◽  
Soichiro SAMESHIMA ◽  
Taro SHIMONOSONO ◽  
Shotaro KISHI ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Electrochemical Properties ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Ceria Electrolyte

Electrochemical Properties of Cathode for Solid Oxide Fuel Cell with Gd-Doped Ceria Electrolyte

2007 ◽  
pp. 275-278
Author(s):  
Taro Shimonosono ◽  
Go Hiramatsu ◽  
Yoshihiro Hirata ◽  
Soichiro Sameshima ◽  
Naoki Matsunaga ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Electrochemical Properties ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Ceria Electrolyte

scholarly journals Ba0.5Sr0.5Co0.8Fe0.2O3–δ–La0.6Sr0.4Co0.8Fe0.2O3–δ Composite Cathode for Solid Oxide Fuel Cell

2016 ◽  
Vol 61 (3) ◽  
pp. 1483-1488 ◽  
Author(s):  
M. Mosiałek ◽  
A. Kędra ◽  
M. Krzan ◽  
E. Bielańska ◽  
M. Tatko
Keyword(s):  
Electrochemical Impedance ◽  
Specific Resistance ◽  
Weight Ratio ◽  
Composite Cathode ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Composite Cathodes ◽  
Area Specific Resistance ◽  
Ceria Electrolyte

Abstract Composite cathodes contain Ba0.5Sr0.5Co0.8Fe0.2O3–δ and La0.6Sr0.4Co0.8Fe0.2O3–δ were tested in different configuration for achieving cathode of area specific resistance lower than Ba0.5Sr0.5Co0.8Fe0.2O3–δ and La0.6Sr0.4Co0.8Fe0.2O3–δ cathodes. Electrodes were screen printed on samaria-doped ceria electrolyte half-discs and tested in the three electrode setup by the electrochemical impedance spectroscopy. Microstructure was observed by scanning electron microscopy. The lowest area specific resistance 0.46 and 2.77 Ω cm−2 at 700 °C and 600 °C respectively revealed composite cathode contain Ba0.5Sr0.5Co0.8Fe0.2O3–δ and La0.6Sr0.4Co0.8Fe0.2O3–δ in 1:1 weight ratio. The area specific resistance of this cathode is characterized by the lowest activation energy among tested cathodes.

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