Complex Precursors for Doped Lanthanum Chromite Synthesis |
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| Authors: | Daniela Berger Ioana Jitaru Nicolae Stanica Raffaella Perego Joop Schoonman |
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| Affiliation: | (1) Department of Inorganic Chemistry,  Politehnica University Bucharest, 1 Polizu street, 78126 Bucharest, Romania;(2) Laboratory for Inorganic Chemistry, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands;(3) Institute of Physical Chemistry, Romanian Academy, Bucharest, Romania |
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| Abstract: | Doped lanthanum chromites are investigated as ceramic interconnect materials to be used in high-temperature solid oxide fuel cells (SOFCs). This paper deals with the preparation of LaCr1–x
M
x
O3 (M = Ni, Cu, x = 0 – 0.2) from complex precursors isolated in the La(NO3)3-Cr(NO3)3-M(NO3)2-urea system. The isolated complex precursors were characterized by atomic absorption spectrometry, electronic, and FT-IR spectra, as well as, by thermal analysis. Doped lanthanum chromites, LaCr1–x
M
x
O3 (M = Ni, Cu) were prepared by calcining of corresponding urea-based precursors at 1000-1200°C for 2 h. Doped mixed-oxide samples were characterized by X-ray diffraction (XRD), Scanning electron-microscopy-energy-dispersive X-ray analysis (SEM-EDX), electrical conductivity, as well as magnetic measurements. |
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| Keywords: | Lanthanum chromites perovskite complex precursor |
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