Abstract
By the method of joint crystallization of solutions of nitrate salts highly dispersed powders of the composition: La1 – xSrxNiO3, La1 – xSrxCoO3 and La1 – xSrxFe0,7Ni0,3O3 (x = 0,30; 0,40) were synthesized. They have a specific pore volume of 0.018 – 0.035 cm3/g and a specific surface area of 15 – 31 m2/g. On their basis, ceramic nanomaterials of a given composition with CSR ~ 64 – 70 nm (1300 °С) were obtained. The physical and chemical properties of the obtained ceramics were studied; it was revealed that it is a solid solution with open porosity in the range of 17 – 30 %, high values of the relative density of 94 %. In terms of their physical and chemical properties (open porosity, density, coefficient of thermal expansion), the obtained ceramic materials are promising as solid oxide cathodes for medium-temperature fuel cells.
Published Version
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