Ba0.5Sr0.5Co0.8Fe0.2O3-σ and La0.6Sr0.4Co0.8Fe0.2O3-σ composite cathode for solid oxide fuel cell

• Autorzy: Mosiałek M. , Kędra A. , Krzan M. , Bielańska E. , Tatko M.

Identyfikatory

DOI

DOI: 10.1515/amm-2016-0243

• Języki publikacji: EN

Abstrakty

EN

Composite cathodes contain Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-σ and La_0.6Sr_0.4Co_0.8Fe_0.2O_3-σ were tested in different configuration for achieving cathode of area specific resistance lower than Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-σ and La_0.6Sr_0.4Co_0.8Fe_0.2O_3-σ 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 Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-σ and La_0.6Sr_0.4Co_0.8Fe_0.2O_3-σ in 1:1 weight ratio. The area specific resistance of this cathode is characterized by the lowest activation energy among tested cathodes.

Słowa kluczowe

EN

barium strontium cobalt ferrite; lanthanum strontium cobalt ferrite; solid oxide fuel cell; oxygen reduction reaction; electrochemical impedance spectroscopy

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2016
• Tom: Vol. 61, iss. 3
• Strony: 1483--1488
• Opis fizyczny: Bibliogr. 48 poz., rys., tab., wykr., wzory

Twórcy

autor

Mosiałek M.

• J. Haber Institute of Catalysis and Surface Chemistry Pas, Cracow, Poland

autor

Kędra A.

• J. Haber Institute of Catalysis and Surface Chemistry Pas, Cracow, Poland

autor

Krzan M.

• J. Haber Institute of Catalysis and Surface Chemistry Pas, Cracow, Poland

autor

Bielańska E.

• J. Haber Institute of Catalysis and Surface Chemistry Pas, Cracow, Poland

autor

Tatko M.

• J. Haber Institute of Catalysis and Surface Chemistry Pas, Cracow, Poland

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