Structural Properties of NiO-CGO Composites Precursor Prepared via Combustion Synthesis Route

Abstract

Solution combustion technique was used for the preparation of NiO-CGO (Ceria Gadolinia Oxide) composites – a precursor to SOFC anode by mixing cerium nitrate, gadolinium nitrate and nickel nitrate in stoichiometric ratio of composition Ce0.90Gd0.10O1.95 - 0.40 NiO.  The concentration of glycine, was varied between 0.5 mole% to 1.6 mole% and its effect was studied on the crystallite size and agglomerate of resulting NiO-CGO composite. The products formed were characterized by XRD, SEM and Particle Size Analysis. The results showed that the composite precursor varied in combustion characteristics, crystallite size and agglomerated particle size depending on the concentration of the fuel.