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Electrical properties and hydratation process of solid solutions Ba4Ca2Nb2O11-0 5xFx
Abstract
In this article the possibility of synthesis of phases on the basis of Ba4Ca2Nb2O11 by heterovalent replacement F- → O2- is studied. It is established that the samples Ba4Ca2Nb2O11-0,5xFx are single-phase in the range of 0 ≤ x ≤ 0.4 and are characterized by cubic structure of double perovskite. It is proved these phases are capable to dissociation water incorporation in structure from gas phase and high-temperature protonic conductivity. The conductivity of fluorine-doping samples was higher then undoped for 0.5 0.8 order of magnitude in region Т < 600 °С. Fluorine-doping method may be recommended as a general way for optimizing transport properties of oxygen and protonic conductors.
About the Authors
K. G. Belova
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
S. A. Baskakova
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
References
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2. Кочетова Н.А., Анимица И.Е., Нейман А.Я. Синтез и свойства твердых растворов на основе Ba4Ca2Nb2O11 // Журнал физической химии. 2009. Т. 83, № 2. C. 203-208.
3. Ashok A., Kochetova N., Norby T., Olsen A. Structural study of the perovskite system Ba6-yCayNb2O11 hydrated to proton conducting Ba6-yCayNb2O10(OH)2 // Solid State Ionics. 2008. Vol. 179. P. 1858-1866.
Review
For citations:
Belova K.G., Baskakova S.A. Electrical properties and hydratation process of solid solutions Ba4Ca2Nb2O11-0 5xFx. Alternative Energy and Ecology (ISJAEE). 2014;(9):60-64. (In Russ.)
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