Abstract
In the present work, nickel oxide and ytttria stabilised zirconia (NiO– YSZ) nanocomposites, a precursor of the anode of solid oxide fuel cell, was synthesised by combustion method, using glycine as fuel. In this preparation, nitrate solutions of respective metals were taken in their stoichiometric ratios. Five different concentrations of glycine were added to the nitrate solutions in order to vary fuel (glycine)/nitrate molar ratio. The fuel/nitrate molar ratio was kept to be 0.8, 0.9, 1.0, 1.1 and 1.2. The combustion of these five solutions resulted in five samples of composite powder with composition mNiO-(1–m) Zr0·9Y0·1O1·95 (m = 0.4). The composite powders obtained were then characterised by FTIR, XRD, TGA-DTA and SEM to determine its properties such as decomposition temperature, crystalline size, lattice constant and microstructure. The influence of different fuel/nitrate molar ratios on the characteristic of precursor nanocomposites was also analysed. It has been observed that the presence of monoclinic phase decreases with increase of fuel ratio used in the combustion process.
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