Jaiswal, Shivendra Kumar Yoon, Kyung Joong Son, Ji-Won Lee, Jong-Ho 2024-01-19T20:34:23Z 2024-01-19T20:34:23Z 2021-09-02 2019-02-15 0925-8388 https://pubs.kist.re.kr/handle/201004/120344 An attempt has been made here to synthesize Ba3CaTa2-xTixO9 (0 <= x <= 1.0) perovskite-type complex oxides and characterize with regard to structure, chemical stability and conductivity to develop electrolytes for proton conducting fuel cells. X-ray diffraction pattern shows the formation of single phase of double perovskite-type structure with lattice parameter lies in the range of 8.368-8.393 angstrom (+/- 0.004 angstrom) for x = 0-0.50 and decreases with titanium content (x). Fourier transform infrared spectra and X-ray diffraction data confirm improved stability of Ba3CaTa2-xTixO9 (0 <= x <= 0.5). in humid air (H2O exposed) and CO2 atmosphere at elevated temperatures. X-ray photoelectron spectra attributed to the presence of Ti3+ and Ti4+, bonding between Ba-O and O - (Ti/Ta). The electrical conductivity of electrolytes are analyzed in different atmospheres e.g., dry and wet air and argon. There is increase in conductivity in wet atmospheres, confirmed the proton conduction in Ba3CaTa2-xTixO9 (0 <= x <= 0.5). Among Ti-substituted materials, Ba3CaTa1.5Ti0.5O9 shows the highest conductivity. (C) 2018 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA PROTON CONDUCTIVITY FUEL-CELLS CHEMICAL-STABILITY OPTICAL-ABSORPTION TECHNOLOGY ELECTROLYTE SOFCS XPS Synthesis and investigation on stability and electrical conductivity of Ti-doped Ba3CaTa2-xTixO9 (0 <= x <= 1.0) complex oxides Article 10.1016/j.jallcom.2018.10.185 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.775, pp.736 - 741 JOURNAL OF ALLOYS AND COMPOUNDS 775 736 741 scie scopus 000450981100086 2-s2.0-85055121425 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article PROTON CONDUCTIVITY FUEL-CELLS CHEMICAL-STABILITY OPTICAL-ABSORPTION TECHNOLOGY ELECTROLYTE SOFCS XPS Proton conductor Solid electrolyte X-ray photoelectron spectroscopy Protonic conductivity Ba3CaTa2-xTixO9