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

被引：116

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.

引用

页码：525 / 530

页数：6

共 21 条

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