Cr Poisoning On Nd2Ni0.95Cu0.05O4+δ Cathode for Solid Oxide Fuel Cells

Abstract In this study, Nd2Ni1-xCuxO4+δ (x=0, 0.05, 0.1, and 0.2) layered perovskite powders were synthesized by the glycine nitrate process (GNP) and the chromium poisoning effect on the electrochemical performance of the Nd2Ni0.95Cu0.05O4+δ and La0.6Sr0.4Co0.2Fe0.8O3-δ cathodes were investigated. In the case of the LSCF cathode, the strontium chromite phase formed after the exposure of the gaseous chromium species, while there was no additional phase in the Nd2Ni0.95Cu0.05O4+δ cathode. The area specific resistance (ASR) of the Nd2Ni0.95Cu0.05O4+δ cathode did not change significantly after the exposure of the gaseous chromium species at 800°C.

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Microstructure and area specific resistance of cathodic half cells for solid oxide fuel cells composed of perovskite-type cathodes and Co-alloy-coated ferritic stainless steel interconnects

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2020.126659 ◽

2021 ◽

Vol 406 ◽

pp. 126659

Author(s):

Lu Gan ◽

Xabier Montero ◽

Saad Ahmed Sheikh ◽

Isao Saeki ◽

Hideyuki Murakami

Keyword(s):

Stainless Steel ◽

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Ferritic Stainless Steel ◽

Specific Resistance ◽

Solid Oxide ◽

Oxide Fuel ◽

Area Specific Resistance ◽

Perovskite Type

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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

Journal of Fuel Cell Science and Technology ◽

10.1115/1.3006310 ◽

2009 ◽

Vol 6 (3) ◽

Cited By ~ 1

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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Effect of Contact Method between Interconnects and Electrodes on Area Specific Resistance in Planar Solid Oxide Fuel Cells

Fuel Cells ◽

10.1002/fuce.201300028 ◽

2013 ◽

pp. n/a-n/a ◽

Cited By ~ 2

Author(s):

W. Wu ◽

G. L. Wang ◽

W. B. Guan ◽

Y. F. Zhen ◽

W. G. Wang

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Specific Resistance ◽

Solid Oxide ◽

Contact Method ◽

Oxide Fuel ◽

Area Specific Resistance

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Oxidation behavior and area specific resistance of La, Cu and B alloyed Fe-22Cr ferritic steels for solid oxide fuel cell interconnects

Journal of Power Sources ◽

10.1016/j.jpowsour.2017.09.077 ◽

2017 ◽

Vol 369 ◽

pp. 13-26 ◽

Cited By ~ 6

Author(s):

Srinivasan Swaminathan ◽

Yoon Seok Ko ◽

Young-Su Lee ◽

Dong-Ik Kim

Keyword(s):

Fuel Cell ◽

Solid Oxide Fuel Cell ◽

Oxidation Behavior ◽

Specific Resistance ◽

Solid Oxide ◽

Ferritic Steels ◽

Oxide Fuel ◽

Area Specific Resistance

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

Archives of Metallurgy and Materials ◽

10.1515/amm-2016-0243 ◽

2016 ◽

Vol 61 (3) ◽

pp. 1483-1488 ◽

Cited By ~ 3

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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