A new percolation model for composite solid electrolytes and dispersed ionic conductors

Muhammad Risyad Hasyim, Michael T. Lanagan

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Composite solid electrolytes (CSEs) including conductor/insulator composites known as dispersed ionic conductors (DICs) have motivated the development of novel percolation models that describe their conductivity. Despite the long history, existing models lack in one or more key areas: (1) rigorous foundation for their physical theory, (2) explanation for non-universal conductor-insulator transition, (3) classification of DICs, and (4) extension to frequency-domain. This work describes a frequency-domain effective medium approximation (EMA) of a bond percolation model for CSEs. The EMA is derived entirely from Maxwell's equations and contains basic microstructure parameters. The model was applied successfully to several composite systems from literature. Simulations and fitting of literature data address these key areas and illustrate the interplay between space charge layer properties and bulk microstructure.

Original languageEnglish (US)
Article number025011
JournalModelling and Simulation in Materials Science and Engineering
Volume26
Issue number2
DOIs
StatePublished - Mar 1 2018

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Computer Science Applications

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