Abstract
Method of differential thermal analysis was used to study the thermolysis of a mixture of barium oxalate hydrate and α-SnO2·H2O, produced by precipitation from hydrochloric solutions. The methods of X-ray diffraction analysis, electron microscopy, and low-temperature nitrogen adsorption were used to examine the reaction products formed at various heating temperatures and determine their phase composition. The nanocomposite BaSnO3/SnO2 is the final product of thermolysis and subsequent heating to 950°C. The nanocomposite was used as a heterogeneous oxide additive for obtaining a CsNO2–BaSnO3/SnO2 composite solid electrolyte. The conductivity of the composite exceeds that of the starting salt by more than order of magnitude.
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