Abstract
La0.75Sr0.25Cr0.5Mn0.5O3-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.
Highlights
A fuel cell is an electrochemical device that converts chemical energy of fuels into electrical energy by exploiting the natural tendency of oxygen and hydrogen to react
X-ray diffraction (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
Nanostructured La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCM) perovskite anode material was synthesized by a combustion technique
Summary
A fuel cell is an electrochemical device that converts chemical energy of fuels (hydrogen, methane, butane or even gasoline and diesel) into electrical energy by exploiting the natural tendency of oxygen and hydrogen to react. (La0.75Sr0.25)1-xCr0.5Mn0.5O3−δ perovskite phase (LSCM) has been considered as a capable anode material for SOFCs due to its electrocatalytic/catalytic activity for oxidation of methane fuel in the absence of steam, reduced carbon deposition, and high durability against sulfur poisoning and good electrical properties [3,4]. This composition of LSCM has shown good stability in fuels and in air, and has good resistance towards carbon deposition and low polarization resistance when used with hydrocarbon fuels [5]. The present work reports on the synthesis of nanostructured La0.75Sr0.25Cr0.5Mn0.5O3−δ (LSCM) perovskite by a combustion method using 3,3’,3”-nitrilotripropionic acid, oxalic acid and citric acid as carriers
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