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Conductivity Enhancement of Solid Ionic Conductors (CuBr, LiI) with Dispersed Oxide Particles (TiO2, A1203) : Experiments and Percolative Transport Model

Published online by Cambridge University Press:  10 February 2011

G. Albinet ,
J.-M. Debierre  and
P. Knauth
G. Albinet
Affiliation:
Laboratory IRPHE (CNRS), Faculty of Sciences of Marseille-St Jérôme, 13397 Marseille Cedex 20, France
J.-M. Debierre
Affiliation:
Laboratory MATOP (CNRS), Faculty of Sciences of Marseille-St Jérôme, 13397 Marseille Cedex 20, France
P. Knauth
Affiliation:
Laboratory EDIFIS (CNRS), Faculty of Sciences of Marseille-St Jérôme, 13397 Marseille Cedex 20, France
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Abstract

The electrical conductivity of two-phase mixtures of an ionic conductor with dispersed insulator particles is described using a percolative transport model. The difference of grain sizes, the existence and anisotropy of confined high conductivity paths near the grain interfaces are implemented by simple rules. The model is capable of simulating the two cases of ionic conductor/insulator composites : those with and those without strong interfacial interactions. The discussed experimental examples are LiI-A1203, CuBr-A1203 and CuBr-TiO2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 548: Symposia EE – Solid State Ionics V , 1998 , 479
Copyright
Copyright © Materials Research Society 1999

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References

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