Synthesis and Characterization of Bi2TixV1-xO5.5-δ as Electrolyte Material in Solid Oxide Fuel Cell

Bambang Prijamboedi (Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung, Bandung)
Citra Deliana Dewi Sundari (Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung, Bandung)
Rolan Rusli (Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung, Bandung)
Ismunandar Ismunandar (Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung, Bandung)

Indonesian Journal of Physics (IJP)
Vol 22 No 3 (2011): Vol. 22 No. 3, July 2011

Oxide materials of Bi2TixV1-xO5,5-δ have been synthesized by means of conventional solid state reaction method. Substitution of Ti atom for the V sites leads to the formation of single phase Bi2TixV1-xO5,5-δ material with I4/mmm space group of tetragonal structure as well as gives results in large grain size and good sinterability of the ceramic material. With Ti concentration of x = 0.2, sample without the presence of porous could be obtained. The ionic conductivity of Bi2TixV1-xO5,5-δ increases significantly with the presence of Ti atoms. This Ti substitution also reduces phase transition temperatures in Bi2TixV1-xO5,5-δ materials. The conductivity data and scanning electron microscope images show that the Ti concentration in Bi2TixV1-xO5,5-δ could be applied as much as x = 0.2, which is higher than reported before and it still gives better properties.