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

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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)341-345
JournalSolid State Ionics
Volume46
Issue number3-4
DOIs
Publication statusPublished - 1991

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nitrites
Ionic conductivity
Nitrites
Silver
ion currents
silver
impedance
Ions
conduction
Isotherms
Cations
ions
isotherms
Activation energy
Positive ions
activation energy
cations
atmospheres
conductivity
radii

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The ionic conductivity of (Ag, Na)-nitrite sodalites. / Jiang, M. R. M.; Weller, Mark T.

In: Solid State Ionics, Vol. 46, No. 3-4, 1991, p. 341-345.

Research output: Contribution to journalArticle

Jiang, M. R. M. ; Weller, Mark T. / The ionic conductivity of (Ag, Na)-nitrite sodalites. In: Solid State Ionics. 1991 ; Vol. 46, No. 3-4. pp. 341-345.
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