Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9781722 | Journal of Physics and Chemistry of Solids | 2005 | 7 Pages |
Abstract
In this paper, two geometric models for describing the effective ionic conductivity in a composite solid electrolyte are analysed. The models make use of insulating particles, which are coated with a highly ionically conducting phase, and are embedded in an ionically conducting matrix. Using a straightforward Maxwell type analysis we derive expressions for the effective ionic conductivity and diffusivity in the composite. We also employ Monte Carlo random walk methods to calculate the effective conductivity/diffusivity. It is shown that at low volume fractions of insulating phase the Maxwell approach provides much better agreement with the Monte Carlo data than previous analytical descriptions of the effective conductivity/diffusivity.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
I.V. Belova, G.E. Murch,