scholarly journals Improved Robustness and Low Area Specific Resistance with Novel Contact Layers for the Solid Oxide Cell Air Electrode

2019 ◽  
Vol 91 (1) ◽  
pp. 2225-2232 ◽  
Author(s):  
Belma Talic ◽  
Ilaria Ritucci ◽  
Ragnar Kiebach ◽  
Peter Vang Hendriksen ◽  
Henrik Lund Frandsen
Keyword(s):  
Specific Resistance ◽  
Solid Oxide ◽  
Air Electrode ◽  
Low Area ◽  
Area Specific Resistance ◽  
Solid Oxide Cell

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.

Use Co- and Ni-Free Air Electrode in Solid Oxide Cell Manufacturing for Electrolysis and Fuel Cell Applications

2021 ◽  
Vol 103 (1) ◽  
pp. 581-590
Author(s):  
Claire Julie Ferchaud ◽  
Frans Berkel ◽  
Loek Berkeveld ◽  
Miranda Heijink-Smith ◽  
Jakobert Veldhuis ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide ◽  
Air Electrode ◽  
Cell Manufacturing ◽  
Free Air ◽  
Solid Oxide Cell

scholarly journals Method to Measure Area Specific Resistance and Chromium Migration Simultaneously from Solid Oxide Fuel Cell Interconnect Materials

Fuel Cells ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 570-577 ◽  
Author(s):  
J. Tallgren ◽  
O. Himanen ◽  
M. Bianco ◽  
J. Mikkola ◽  
O. Thomann ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Specific Resistance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Area Specific Resistance

Area specific resistance of oxide scales grown on ferritic alloys for solid oxide fuel cell interconnects

2011 ◽  
Vol 196 (17) ◽  
pp. 7136-7143 ◽  
Author(s):  
Stefan Megel ◽  
Egle Girdauskaite ◽  
Viktar Sauchuk ◽  
Mihails Kusnezoff ◽  
Alexander Michaelis
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Specific Resistance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Oxide Scales ◽  
Ferritic Alloys ◽  
Area Specific Resistance

scholarly journals Comparison of different infiltration amounts of CeO2 inside Ni-YSZ anodes to improve stability and efficiency of Single-Chamber SOFCs operating in methane

2022 ◽  
Vol 334 ◽  
pp. 04009
Author(s):  
Giovanni d’Andrea ◽  
Enrico Squizzato ◽  
Antonella Glisenti
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Solid Electrolytes ◽  
Specific Resistance ◽  
Solid Oxide ◽  
Oxygen Mixture ◽  
Gas Mixture ◽  
Single Chamber ◽  
Electrochemically Active ◽  
Area Specific Resistance ◽  
Improve Stability

Electrochemically active oxide-based anodes capable of working in Single-Chamber Solid Oxide Fuel Cells (SC-SOFCs) were developed. Their performance is related to the selectivity of the electrodes. Tests are carried out on lab-scale devices with YSZ pellets as solid electrolytes in electrolyte supported cells. Selecting methane as a fuel, a gas mixture in the ratio CH4/O2 = 2 was chosen. The Ni-YSZ (NiO:YSZ=60:40) anode was optimized through CeO2 nanocatalysts infiltration to enhance the anode catalytic activity and make its reduction easier. Several infiltration amounts were compared, from null to 15% of the electrode weight. Both symmetric and complete cells (with LSCF-based cathodes) were tested in H2 and CH4/O2. For increasing amounts of infiltrated CeO2, symmetric cells tests describe an area specific resistance (ASR) reduction from 40 Ω cm2 to 1.7 Ω cm2 in hydrogen and from 11 Ω cm2 to 3.9 Ω cm2 in the methane/oxygen mixture. While complete cells tests displayed an ASR drop from 30 Ω cm2 to 2.9 Ω cm2 in H2, and from 8.7 Ω cm2 to 4.3 Ω cm2 in the methane/oxygen mixture, while OCP and power grew from 478 mV and 3.7 mW cm-2 to 766 mV and 13 mW cm-2.

Polarization Resistances of (Ln1−xSrx)CoO3 (Ln=Pr, Nd, Sm, and Gd x=0, 0.3, 0.5, 0.7, and 1) as Cathode Materials for Intermediate Temperature-operating Solid Oxide Fuel Cells

2009 ◽  
Vol 6 (3) ◽  
Author(s):  
Jung Hyun Kim ◽  
Seung-Wook Baek ◽  
Joongmyeon Bae
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Cathode Materials ◽  
Specific Resistance ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Temperature Operating ◽  
Polarization Resistances ◽  
Area Specific Resistance

This study focuses on cathode performances of (Ln1−xSrx)CoO3−δ (Ln=Pr, Nd, Sm, and Gd, x=0, 0.3, 0.5, 0.7, and 1) for intermediate temperature-operating solid oxide fuel cells (IT-SOFCs, 600–800°C). (Ln1−xSrx)CoO3−δ powders as cathode materials for IT-SOFC, which can be operated between 600°C and 800°C were synthesized by the glycine-nitrate-process (GNP) method. The impedance spectroscopy method was used to investigate area specific resistance (ASR) and electrochemical properties of (Ln1−xSrx)CoO3−δ (Ln=Pr, Nd, Sm, and Gd, x=0, 0.3, 0.5, 0.7, and 1). Pr0.5Sr0.5CoO3−δ and Pr0.3Sr0.7CoO3−δ showed to 0.15 Ω cm2 of ASR at 700°C and Nd0.5Sr0.5CoO3−δ to 0.14 Ω cm2 at 700°C. Sm0.5Sr0.5CoO3−δ showed the lowest ASR values of 0.10 Ω cm2 on 10% Gd-doped cerium oxide at 700°C.

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