The Open Fuels & Energy Science Journal

2008, 1 : 7-10
Published online 2008 March 18. DOI: 10.2174/1876973X00801010007
Publisher ID: TOEFJ-1-7

Stability and Electric Conductivity of Barium Cerate Perovskites Co-Doped with Praseodymium

J. Melnik , J. Luo , K.T. Chuang and A.R. Sanger
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G6.

ABSTRACT

Co-doping of yttrium doped mixed barium cerate/zirconate perovskite (BCZY) with small amounts of Pr (BCZYP) substantially increases electrical conductivity while retaining structural and chemical stability. BCZYP is predominantly a proton conductor at temperatures up to 600-650°C, whereas it is a mixed proton/oxide ion/electron conductor at higher temperatures. The co-doped BCZYP perovskite can be useful for applications requiring proton conduction at intermediate temperatures.