Microstructural, electrophysical and gas-sensing properties of CeO2–Y2O3 thin films obtained by the sol-gel process. Issue 1 (January 2020)

• Record Type: Journal Article
• Authors: Simonenko, Tatiana L.; Simonenko, Nikolay P.; Mokrushin, Artem S.; Simonenko, Elizaveta P.; Glumov, Oleg V.; Mel'nikova, Natalia A.; Murin, Igor V.; Kalinina, Marina V.; Shilova, Olga A.; Sevastyanov, Vladimir G.; Kuznetsov, Nikolay T.
• Is Part Of: Ceramics international. Volume 46:Issue 1(2020)
• Page Start: 121
• Page End: 131
• Publication Date: 2020-01
• Subjects: Sol-gel synthesis -- Thin film -- CeO2 -- YDC solid electrolyte -- Planar SOFC -- Gas sensor; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.08.241
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Nanopowders and thin films of (СeO2 )1-x (Y2 O3 )x composition (x = 0.10, 0.15 and 0.20) were obtained by the sol-gel process, using hydrolytically active complexes of the metal alkoxoacetylacetonate class [M(C5 H7 O2 )3-y (C5 H11 O i )y ] (M = Ce 3+ and Y 3+ ) as precursors. The impact of the chemical composition and crystallization conditions on the microstructure, electrophysical and chemosensory characteristics of the obtained planar-type solid electrolytes was studied. The prospects of the thin-film nanostructures obtained as receptor components of resistive oxygen sensors, as well as of electrolytes of planar-type intermediate-temperature solid oxide fuel cells (SOFC) have been shown. It has been found that (CeO2 )0.90 (Y2 O3 )0.10 thin films demonstrate the maximum values of electrical conductivity (550 °C) and the highest sensory response when detecting oxygen (concentration range 1–20%, operating temperature range 300–450 °C).