TY - JOUR
T1 - The ionic conductivity of (Ag, Na)-nitrite sodalites
AU - Jiang, M. R. M.
AU - Weller, Mark T.
N1 - Copyright 2008 Elsevier B.V., All rights reserved.
PY - 1991
Y1 - 1991
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.
UR - http://www.scopus.com/inward/record.url?scp=0026190174&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/0167-2738(91)90236-5
U2 - 10.1016/0167-2738(91)90236-5
DO - 10.1016/0167-2738(91)90236-5
M3 - Article
AN - SCOPUS:0026190174
VL - 46
SP - 341
EP - 345
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 3-4
ER -