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Journal Article

Extremely High Silver Ionic Conductivity in Composites of Silver Halide (AgBr, AgI) and Mesoporous Alumina

MPS-Authors
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Yamada,  H.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Bhattacharyya,  A. J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Maier,  J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Yamada, H., Bhattacharyya, A. J., & Maier, J. (2006). Extremely High Silver Ionic Conductivity in Composites of Silver Halide (AgBr, AgI) and Mesoporous Alumina. Advanced Functional Materials, 16(4), 525-530.


Cite as: https://hdl.handle.net/21.11116/0000-000F-0321-8
Abstract
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.