Accession Number:

ADA281339

Title:

Fundamental Studies of Polyphosphazene and Polysiloxane Polyelectrolytes for Electrochemical Devices

Descriptive Note:

Final rept. 12 Feb 1990-11 Feb 1994

Corporate Author:

NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1994-04-01

Pagination or Media Count:

9.0

Abstract:

In this project, new polymeric ionic conductors were synthesized, and characterized both chemically and through complex dielectric measurements, which provided information on ionic conductivity. Parallel with this experimental program, a series of theoretical studies were performed to elucidate the mechanisms of ion transport in polymers. Some major accomplishments were the demonstration that cryptands enhance ionic conductivity in phosphazene polyelectrolytes, the theoretical indication of ion clustering and the role of such clusters in ion transport. Considerable insight into the conduction processes in these materials was also gained from conductivity and dielectric constant measurements from DC to 6 GHz, which suggest that the attempt frequency for ion motion is. above 6 GHz. The research on polyphosphazenes inspired new research on polyaluminosilicates which have excellent conductivity. Phosphazene polymers, Polymer electrolytes, Aluminosilicates.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Polymer Chemistry
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE