Jaiswal, Shivendra K. Hong, Jongsup Yoon, Kyung J. Son, Ji-Won Lee, Jong-Ho 2024-01-20T00:32:16Z 2024-01-20T00:32:16Z 2021-09-03 2017-10 0002-7820 https://pubs.kist.re.kr/handle/201004/122260 An attempt has been made here to synthesize (1-x)Ba(0.6)Sr(0.4)CZY-xGDC (x=0, 0.2, 0.5) composite electrolytes and investigated their phase(s), X-ray photo spectra (XPS) and conduction properties. All compositions possess dual phases (perovskite-type as well as cubic fluorite structure) and show proton conduction in various atmospheres. Homogeneous formation and compatibility between phases have been confirmed from X-ray diffraction analysis. Detailed X-ray photoelectron spectroscopy (XPS) studies on the oxidation states of barium, strontium, gadolinium, cerium, zirconium, yttrium, and oxygen was performed. With increasing "x", oxygen vacancy concentration increases as cerium ions in 4+ oxidation state decreases. The conduction behavior of composites depicts the protonic in nature and total activation energy lying in the range of 0.16-0.24 eV. This study indicates that the conductivity increases with GDC content in composite electrolytes and highest conductivity is found for composite with x=0.5. These characteristics are useful to make (1-x)Ba(0.6)Sr(0.4)CZY-xGDC composite electrolytes as promising candidate of central membrane for advanced fuel cell technology. English WILEY Synthesis and conductivity behaviour of proton conducting (1-x)Ba0.6Sr0.4Ce0.75Zr0.10Y0.15O3-delta-xGDC (x=0, 0.2, 0.5) composite electrolytes Article 10.1111/jace.15005 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.100, no.10, pp.4710 - 4718 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 100 10 4710 4718 N scie scopus 000414922900034 2-s2.0-85021380559 Materials Science, Ceramics Materials Science Article ELECTRICAL-PROPERTIES CHEMICAL-STABILITY IDEAL-CELL TEMPERATURE XPS CATHODE PHASE oxides proton conductor sol-gel synthesis solid electrolyte X-ray photoelectron spectroscopy