Synthesis and characterization of perovskite type La1-xSrxAlO3-δ(0≤X≤0.3) by Co-precipitation method

This work shows the electrochemical activity of o2 evolution reaction in koh of perovskite type-aluminate oxide (la1-xsrxalo3-δ,with x = 0,0.1,0.2,0.3). la1-xsrxalo3-δ (0<x<0.3) was prepared by co-precipitation method. the white precipitates were then washed in distilled water by centrifugation,and calcined at 1000°c for 6h,the pure phase was characterized by x-ray diffraction (xrd),thermal gravimetric analysis and differential thermal (tg/dsc),fourier transform infrared spectroscopy (ftir),specific surface area (bet). the meb micrographs are shown of the spherical grains and uniform agglomeration of the grains. the oxide powders were used as the films to form a support on ni/oxides. oxygen evolution on each oxide catalyst was signed in the cyclic voltammetry with ± 15 v range and the electrochemical impedance in the equivalent of 100 khz. the results point out the electrode activity and stability of the x = 0.3 composition.