Crystal structure study of Perovskite-type LaCoO3 electro-catalyst synthesized by Pechini method

The study of Perovskite - type LaCoO₃ oxides used to the Solid oxide fuel cell catalyst broadly observed due to their cheap and simple technology. In this we report the Perovskite-type lanthanum cobaltite oxide (LaCoO₃) catalyst obtained by the polymerizable complex method based on the Pechini-type reaction route and calcined at 650°C and 900°C. The crystal structure of lanthanum cobaltite oxide (LaCoO₃) was determined by X-ray diffraction (XRD), X ray absorption spectroscopy (XAS). The findings are discussed with respect to the average particle size 52 nm, lattice parameters a = b = 5.40643Å, c = 13.31220Å, α=β=90°, γ= 120° and space group R-3c. By the simulated results of XRD and XAS, we were defined the interatomic distances of the Co-O, Co-La, Co-Co and C-O-Co.