Synthesis of BaSnO3/SnO2 Nanocomposites as Heterogeneous Additive for Composite Solid Electrolytes

• Published in: Russian journal of applied chemistry Vol. 91; no. 10; pp. 1660 - 1664
• Main Authors: Loginov, A. V., Mateyshina, Yu. G., Aparnev, A. I., Uvarov, N. F.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.10.2018; Springer Nature B.V
• Subjects: Barium stannate; Chemical precipitation; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Differential thermal analysis; Heating; Industrial Chemistry/Chemical Engineering; Inorganic Synthesis and Industrial Inorganic Chemistry; Molten salt electrolytes; Nanocomposites; Phase composition; Reaction products; Solid electrolytes; Tin dioxide; X-ray diffraction; stannates of alkaline-earth metals; tin dioxide; nanocomposites; composite solid electrolytes; hydroxo stannates
• ISSN: 1070-4272; 1608-3296
• DOI: 10.1134/S1070427218100130

Method of differential thermal analysis was used to study the thermolysis of a mixture of barium oxalate hydrate and α-SnO 2 ·H 2 O, 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 BaSnO 3 /SnO 2 is the final product of thermolysis and subsequent heating to 950°C. The nanocomposite was used as a heterogeneous oxide additive for obtaining a CsNO 2 –BaSnO 3 /SnO 2 composite solid electrolyte. The conductivity of the composite exceeds that of the starting salt by more than order of magnitude.