Synthesis and Characterization of La_0.75Sr_0.25Cr_0.5Mn_0.5O₃-δ Nanoparticles Using a Combustion Method for Solid Oxide Fuel Cells

V. S. Reddy Channu, Rudolf Holze, Edwin H. Walker, Rajamohan R. Kalluru

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DOI: 10.4236/njgc.2011.12010                

Abstract

La_0.75Sr_0.25Cr_0.5Mn_0.5O₃-δ (LSCM) perovskite nanoparticles for use as anode material in intermediate temperature solid oxide fuel cells (IT-SOFCs) were synthesized using 3,3’,3”- nitrilotripropionic acid (NTP), citric acid and oxalic acid as carriers via a combustion method. The influence of the carrier on phase and morphology of the obtained pristine products was characterized using X-ray diffraction (XRD), thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM). XRD results showed, that the LSCM had rhombohedral symmetry with R-3c space group; a single phase LSCM perovskite formed after calcination of fired gel at 1200°C for 7 h. Scanning electron microscopy analysis of the pristine powders showed spherical shape and particle sizes in the range of 50 – 500 nm.

Keywords

Nanoparticles; Combustion method; Morphology; Carriers

Conflicts of Interest

The authors declare no conflicts of interest.

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