Extremely high silver ionic conductivity in composites of silver halide (AgBr, AgI) and mesoporous alumina

被引：117
|
作者：
Yamada, H
Bhattacharyya, AJ [1 ]
Maier, J
机构：
[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
[2] Nagasaki Univ, Nagasaki 8528521, Japan
来源：
ADVANCED FUNCTIONAL MATERIALS | 2006年 / 16卷 / 04期
关键词：
D O I：
10.1002/adfm.200500538
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The silver ionic conductivity in heterogeneous systems of AgBr:Al2O3 and AgI:Al2O3 is highly enhanced by utilizing mesoporous Al2O3 as the insulating phase. The highest Ag+ conductivity of 3.1 X 10(-3) Omega(-1) cm(-1) (at 25 degrees C) has been obtained for the AgI:Al2O3 composite with an Al2O3 volume fraction of 0.3. For AgBr:Al2O3, the enhancement of the conductivity is satisfactorily explained in the framework of the ideal space-charge model, while in the case of AgI:Al2O3 stacking disorder is also considered to contribute to the ionic conductivity.
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页码：525 / 530
页数：6
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