The ionic conductivity of (Ag, Na)-nitrite sodalites

M. R. M. Jiang; Mark T. Weller

doi:10.1016/0167-2738(91)90236-5

The ionic conductivity of (Ag, Na)-nitrite sodalites

M. R. M. Jiang, Mark T. Weller

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Ionic conductivity data for mixed Ag/Na-nitrite sodalites, AgNa(AlSiO)(NO), have been determined over the temperature range 250 to 550°C in ambient atmosphere using an ac impedance method. The activation energy for conduction is reported for five samples with silver contents ranging from x=0 to 7.5 and was found to be a monotonic function of silver content, with a minimum at the highest silver content. Conductivity isotherms for the mixed Ag/Na nitrite sodalites were constructed, showing a direct relationship of total ionic conductivity as a function of silver content, with fastest ionic motion at the highest silver content. A transition of conduction mechanism from Na ion predominance to Ag ion predominance with increasing x was confirmed from variations in the interfacial impedance characteristics. Ionic conductivity of nitrite sodalites is strongly dependent upon the ionic radius of the mobile cations incorporated.

Original language	English
Pages (from-to)	341-345
Journal	Solid State Ionics
Volume	46
Issue number	3-4
DOIs	https://doi.org/10.1016/0167-2738(91)90236-5
Publication status	Published - 1991

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10.1016/0167-2738(91)90236-5

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title = "The ionic conductivity of (Ag, Na)-nitrite sodalites",

abstract = "Ionic conductivity data for mixed Ag/Na-nitrite sodalites, AgNa(AlSiO)(NO), have been determined over the temperature range 250 to 550°C in ambient atmosphere using an ac impedance method. The activation energy for conduction is reported for five samples with silver contents ranging from x=0 to 7.5 and was found to be a monotonic function of silver content, with a minimum at the highest silver content. Conductivity isotherms for the mixed Ag/Na nitrite sodalites were constructed, showing a direct relationship of total ionic conductivity as a function of silver content, with fastest ionic motion at the highest silver content. A transition of conduction mechanism from Na ion predominance to Ag ion predominance with increasing x was confirmed from variations in the interfacial impedance characteristics. Ionic conductivity of nitrite sodalites is strongly dependent upon the ionic radius of the mobile cations incorporated.",

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AU - Weller, Mark T.

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N2 - Ionic conductivity data for mixed Ag/Na-nitrite sodalites, AgNa(AlSiO)(NO), have been determined over the temperature range 250 to 550°C in ambient atmosphere using an ac impedance method. The activation energy for conduction is reported for five samples with silver contents ranging from x=0 to 7.5 and was found to be a monotonic function of silver content, with a minimum at the highest silver content. Conductivity isotherms for the mixed Ag/Na nitrite sodalites were constructed, showing a direct relationship of total ionic conductivity as a function of silver content, with fastest ionic motion at the highest silver content. A transition of conduction mechanism from Na ion predominance to Ag ion predominance with increasing x was confirmed from variations in the interfacial impedance characteristics. Ionic conductivity of nitrite sodalites is strongly dependent upon the ionic radius of the mobile cations incorporated.

AB - Ionic conductivity data for mixed Ag/Na-nitrite sodalites, AgNa(AlSiO)(NO), have been determined over the temperature range 250 to 550°C in ambient atmosphere using an ac impedance method. The activation energy for conduction is reported for five samples with silver contents ranging from x=0 to 7.5 and was found to be a monotonic function of silver content, with a minimum at the highest silver content. Conductivity isotherms for the mixed Ag/Na nitrite sodalites were constructed, showing a direct relationship of total ionic conductivity as a function of silver content, with fastest ionic motion at the highest silver content. A transition of conduction mechanism from Na ion predominance to Ag ion predominance with increasing x was confirmed from variations in the interfacial impedance characteristics. Ionic conductivity of nitrite sodalites is strongly dependent upon the ionic radius of the mobile cations incorporated.

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The ionic conductivity of (Ag, Na)-nitrite sodalites

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