Properties of Copper Doped Neodymium Nickelate Oxide as Cathode Material for Solid Oxide Fuel Cells

• Autorzy: Lee K. J. , Choe Y-J. , Hwang H-J.

Identyfikatory

DOI

10.1515/amm-2016-0106

• Języki publikacji: EN

Abstrakty

EN

Mixed ionic and electronic conducting K₂NiF₄-type oxide, Nd₂Ni_1-xCu_xO_4+δ (x=0~1) powders were synthesized by solid state reaction technique and solid oxide fuel cells consisting of a Nd₂Ni_1-xCu_xO_4+δ cathode, a Ni-YSZ anode and ScSZ as an electrolyte were fabricated. The effect of copper substitution for nickel on the electrical and electrochemical properties was examined. Small amount of copper doping (x=0.2) resulted in the increased electrical conductivity and decreased polarization resistance. It appears that this phenomenon was associated with the high mean valence of nickel and copper and the resulting excess oxygen (δ). It was found that power densities of the cell with the Nd₂Ni_1-xCu_xO_4+δ (x=0.1 and 0.2) cathode were higher than that of the cell with theNd₂NiO_4+δ cathode.

Słowa kluczowe

EN

solid oxide fuel cells; copper; electrical conductivity; excess oxygen

• 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. 2A
• Strony: 625--628
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Lee K. J.

• Department of Materials Science and Engineering, Inha University, Incheon, Korea

autor

Choe Y-J.

• Department of Materials Science and Engineering, Inha University, Incheon, Korea

autor

Hwang H-J.

• Department of Materials Science and Engineering, Inha University, Incheon, Korea

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