Fig.4: PSA graph of a) sample LCU1(—) and sample LCU2( ).
Morphologies of LaCoO3 synthesized with the sol-gel Auto-combustion method by glycine and urea as fuel are presented in Fig.5 (a-b) and Fig.6 (a-b), respectively. The SEM images show nonporous nature of the synthesized perovskite particles with spherical shape in all samples. The porous nature can be due to the nitrate precursors because burning of the nitrates at higher temperature may lead to the porous structures.