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Title: Combustion synthesis of NiO–Ce0.9Gd0.1O1.95 nanocomposite anode and its electrical characteristics of semi-cell configured SOFC assembly
Authors: Akbari-Fakhrabadi, A
Avila, R E
Carrasco, H E
Ananthakumar, S
Mangalaraja, R V
Keywords: Nanocomposite
Combustion synthesis
Electrical conductivity
Issue Date: 2012
Publisher: Elsevier
Citation: Journal of Alloys and Compounds 541:1-5;2012
Abstract: NiO–Ce0.9Gd0.1O1.95 (NiO–10GDC)nanocomposite anode material was synthesized through combustion technique for possible low temperature solid oxide fuel cells (LT–SOFCs). A low weight loss is seen in the TG/DTA thermogram that indicates the complete combustion of the reactant mixtures. The powder X-ray diffraction patterns showed that the presence of NiO, GDC and Ni crystallite phases in the as combusted product. Upon calcination at 600 C, the metallic Ni oxidized to NiO. TEM images showed a wide size distribution of fine spherical GDC and large irregularly shaped NiO particles. This NiO–10GDC anode material was applied over GDC electrolyte as a porous thin layer. Using this surface engineered GDC electrolyte a semi-cell (electrode/electrolyte structure) was fabricated. The electrical conductivity of the semi-cell was characterized with respect to temperature
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