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 pre- dominantly a proton conductor at temperatures up to 600-650˚C, whereas it is a mixed proton/oxide ion/electron conduc- tor at higher temperatures. The co-doped BCZYP perovskite can be useful for applications requiring proton conduction at intermediate temperatures.
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