Acceptor Doped BiFeO3 Ceramics: A New Material for Oxygen Permeation Membranes
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概要
- 論文の詳細を見る
A new intermediate temperature mixed conducting material has been fabricated based on acceptor doping of bismuth ferrite (BiFeO3). Acceptor doping at levels of 5 mol % with either Ca or Sr was found to increase the maximum operating temperature of ceramics by more than 100 °C as well as eliminate secondary phase formation often reported in the pure BiFeO3 system. Mixed ionic and electronic conductivity was confirmed by measuring the oxygen permeation properties of doped ceramics which exhibited flux's on the order of 0.018 μmol/(cm2 s) at 800 °C over the oxygen partial pressure range 0.21 atm (air) to $10^{-6}$ atm (He). Ceramic membranes showed an increase in oxygen flux with decreasing sample thickness indicating good surface catalysis properties of the system.
- Japan Society of Applied Physicsの論文
- 2007-02-25
著者
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Takamura Hitoshi
Department Of Food Science And Nutrition
-
Brinkman Kyle
Research Center For Hydrogen Industrial Use And Storage National Institute Of Advanced Industrial Sc
-
Iijima Takashi
Research Center For Hydrogen Industrial Use And Storage National Institute Of Advanced Industrial Sc
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