Accession Number:

ADA159431

Title:

Redox Capacity and DC Electron Conductivity in Electroactive Materials.

Descriptive Note:

Technical rept.,

Corporate Author:

NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1985-09-01

Pagination or Media Count:

21.0

Abstract:

The storage and transport of charge in electroactive materials are closely related. We develop the macroscopic concepts of redox capacity, rho, and DC electronic conductivity, sigma subscript erho. Their ratio, De Sigma subscript erho, is identified as the electron diffusion coefficient. A microscopic model is developed incorporating interaction among the stored electrons and variation of counterion activity as a function of electrochemical potential. Data obtained for the polymer poly Os2,2-bipyridine24-vinylpyridine 2 C104 x x 0-3 are compared with the model. The dependence of the electron diffusion coefficient on electrochemical potential is particularly revealing of discrepancies between the real material and the model, suggesting that this quantity will be a useful parameter for the characterization of a variety of electroactive materials. Author

Subject Categories:

  • Physical Chemistry
  • Plastics
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE