Why Conductivity Decreases with Pressure in Ion-Doped Polymers

Abstract

The relaxation time scale in glassy materials is derived within a model of anomalous defect diffusion. The effect of the defects on ion-doped polymeric glasses is to produce a stretched exponential waiting time distribution for ion jumps. The characteristic time scale for ion jumps is connected to the temperature and pressure dependent concentration of mobile defects. The resultant expression for ionic conductivity is compared with experimental results for the polymer electrolytes poly(ethylene glycol) (PEQ) and poly(propylene glycol) (PPG) containing LiCF3SO3.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2001
Accession Number
ADA392699

Entities

People

  • J. T. Bendler
  • John J. Fontanella
  • M. F. Shlesinger

Organizations

  • United States Naval Academy

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Engineering
  • Chemistry
  • Conductivity
  • Critical Temperature
  • Crystal Structure
  • Energy
  • Equations
  • Glass
  • Glass Transition Temperature
  • Materials
  • Military Research
  • Phase Transformations
  • Physics
  • Random Variables
  • Relaxation Time
  • Transition Temperature
  • United States

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Technology
  • Statistical inference.