Electrochemical Properties of Perovskite Cathode for Solid Oxide Fuel Cell

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.

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Influence of Hydrogen Sulfide in Fuel on Electric Power of Solid Oxide Fuel Cell

Materials Science Forum ◽

10.4028/www.scientific.net/msf.544-545.997 ◽

2007 ◽

Vol 544-545 ◽

pp. 997-1000 ◽

Cited By ~ 4

Author(s):

Minako Nagamori ◽

Yoshihiro Hirata ◽

Soichiro Sameshima

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Electric Power ◽

Power Density ◽

Open Circuit Voltage ◽

Open Circuit ◽

Solid Oxide ◽

Oxide Fuel ◽

Terminal Voltage ◽

Ceria Electrolyte

Terminal voltage, electric power density and overpotential were measured for the solid oxide fuel cell with gadolinium-doped ceria electrolyte (Ce0.8Gd0.2O1.9, GDC), 30 vol% Ni-GDC anode and Pt cathode using a H2 fuel or biogas (CH4 47, CO2 31, H2 19 vol %) at 1073 K. Addition of 1 ppm H2S in the 3vol % H2O-containing H2 fuel gave no change in the open circuit voltage (0.79 - 0.80 V) and the maximum power density (65 - 72 mW/cm2). Furthermore, no reaction between H2S and Ni in the anode was suggested by the thermodynamic calculation. On the other hand, the terminal voltage and electric power density decreased when 1 ppm H2S gas was mixed with the biogas. After the biogas with 1 ppm H2S flowed into the anode for 8 h, the electric power density decreased from 125 to 90 mW/cm2. The reduced electric power density was also recovered by passing 3 vol % H2O-containing H2 fuel for 2 h.

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

Journal of the Ceramic Society of Japan ◽

10.2109/jcersj.113.597 ◽

2005 ◽

Vol 113 (1321) ◽

pp. 597-604 ◽

Cited By ~ 8

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

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.26-28.275 ◽

2007 ◽

Vol 26-28 ◽

pp. 275-278 ◽

Cited By ~ 9

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.

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