Cell performance of strontium ruthenium oxide cathode/ Gd-doped ceria (GDC) electrolyte/ nickel-GDC anode system

Cell performance was measured for four types of Ni (40 vol%)-Gd-doped ceria (GDC) anode-supported solid oxide fuel cells with GDC electrolyte (40-120 μm thickness) of Ce1-xGdxO2-x/2 compositions (x = 0.05, 0.1, 0.15 and 0.2) at 773-1073 K using a H2 fuel. (La0.8Sr0.2)(Co0.8Fe0.2)O3 cathode was printed on the GDC films. The open circuit voltage and maximum power density at 873-1073 K showed a maximum at x = 0.1. The maximum power density at x = 0.1 was 166 and 506 mW/cm2 at 873 and 1073 K, respectively. The excess oxygen vacancy at x = 0.1-0.2, which does not contribute to the oxide ion conductivity, reacts with a H2 fuel to form electrons (H2 + VO 2H+ + VO×, VO× VO + 2e-). This reaction reduces the cell performance.

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Effect of Ca 2+ and Sr 2+ doping on the microstructure and cell performance of samaria-doped ceria electrolytes used in solid oxide fuel cells

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2016.06.172 ◽

2016 ◽

Vol 41 (31) ◽

pp. 13591-13602 ◽

Cited By ~ 16

Author(s):

Yu-Chuan Wu ◽

Yi-Yao Liao

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Solid Oxide ◽

Cell Performance ◽

Doped Ceria ◽

Oxide Fuel

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High-Pressure Synthesis and Crystal Structure of a New Strontium Ruthenium Oxide: Sr2Ru3O10

Journal of Solid State Chemistry ◽

10.1006/jssc.1998.8105 ◽

1999 ◽

Vol 143 (2) ◽

pp. 266-272 ◽

Cited By ~ 12

Author(s):

C. Renard ◽

S. Daviero-Minaud ◽

F. Abraham

Keyword(s):

Crystal Structure ◽

High Pressure ◽

Ruthenium Oxide ◽

Synthesis And Crystal Structure ◽

High Pressure Synthesis ◽

Pressure Synthesis ◽

Strontium Ruthenium Oxide

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Mixed-Fuels Fuel Cell Running on Methane-Air Mixture

3rd International Conference on Fuel Cell Science, Engineering and Technology ◽

10.1115/fuelcell2005-74081 ◽

2005 ◽

Author(s):

Sung Pil Yoon ◽

Hyun Jae Kim ◽

Byung-Tak Park ◽

Suk Woo Nam ◽

Jonghee Han ◽

...

Keyword(s):

Thin Films ◽

Fuel Cell ◽

Carbon Deposition ◽

Sol Gel ◽

Cell Performance ◽

New Method ◽

Doped Ceria ◽

Low Carbon ◽

Electrode Performance ◽

Term Operation

In order to develop SOFC running on hydrocarbon fuels, we have focused on a new method of improving electrode performance and reducing carbon deposition by coating thin films of samaria-doped ceria (SDC) within the pores of electrode by a sol-gel coating technique. The SDC coating on the pores of anode made it possible to have a good stability for long-term operation due to low carbon deposition and nickel sintering. In this study, we demonstrated a new method of improving electrode performance and reducing carbon deposition by coating thin films of samaria-doped ceria (SDC) and applied the modification technique to two different types of fuel cell structures, anode-supported SOFC and comb-shaped SOFC. From our results, the maximum power density of an anode-supported cell (electrolyte; 8 mol% YSZ and thickness of 30 μm, and cathode; La0.85Sr0.15MnO3) with the modified anode was about 300 mW/cm2 at 700 °C in the mixture of methane (25%) and air (75%) as the fuel and air as the oxidant. The cell was operated for 500 h without significant degradation of cell performance. For the comb-shaped SOFCs operated in the mixed-fuels fuel cell (MFFC) conditions, the cell performance was 40 mW/cm2 at 700 °C in the CH4/O2 ratio of 1.

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Conducting Strontium Ruthenium Oxide Interface Layers for Application to PZT/SrRuO3/Metal Thin Film Capacitors

Ferroelectrics ◽

10.1080/714040563 ◽

2003 ◽

Vol 293 (1) ◽

pp. 127-134 ◽

Cited By ~ 1

Author(s):

R. Seveno ◽

A. Braud ◽

H. W. Gundel

Keyword(s):

Thin Film ◽

Ruthenium Oxide ◽

Oxide Interface ◽

Metal Thin Film ◽

Thin Film Capacitors ◽

Interface Layers ◽

Strontium Ruthenium Oxide

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Performance Investigation of Dual Layer Yttria-Stabilized Zirconia–Samaria-Doped Ceria Electrolyte for Intermediate Temperature Solid Oxide Fuel Cells

Journal of Electrochemical Energy Conversion and Storage ◽

10.1115/1.4032708 ◽

2016 ◽

Vol 13 (1) ◽

Cited By ~ 14

Author(s):

Ryan J. Milcarek ◽

Kang Wang ◽

Michael J. Garrett ◽

Jeongmin Ahn

Keyword(s):

Fuel Cell ◽

Buffer Layer ◽

Sintering Temperature ◽

Solid Oxide ◽

Yttria Stabilized Zirconia ◽

Cell Performance ◽

Doped Ceria ◽

Oxide Fuel ◽

Stabilized Zirconia ◽

Fuel Cell Performance

The performance of yttria-stabilized zirconia (YSZ)–samaria-doped ceria (SDC) dual layer electrolyte anode-supported solid oxide fuel cell (AS-SOFC) was investigated. Tape-casting, lamination, and co-sintering of the NiO–YSZ anode followed by wet powder spraying of the SDC buffer layer and BSCF cathode was proposed for fabrication of these cells as an effective means of reducing the number of sintering stages required. The AS-SOFC showed a significant fuel cell performance of ∼1.9 W cm−2 at 800 °C. The fuel cell performance varies significantly with the sintering temperature of the SDC buffer layer. An optimal buffer layer sintering temperature of 1350 °C occurs due to a balance between the YSZ–SDC contact and densification at low sintering temperature and reactions between YSZ and SDC at high sintering temperatures. At high sintering temperatures, the reactions between YSZ and SDC have a detrimental effect on the fuel cell performance resulting in no power at a sintering temperature of 1500 °C.

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