Abstract
New polymer electrolytes were synthesized and characterized based on a new polymer host. The motivation was to produce a host polymer with a high dielectric constant which should reduce ion clustering with an attendant increased conductivity. The new polymer host, poly(diethylene glycol carbonate) and its sodium triflate complexes were characterized by thermal analysis and AC impedance measurements. The polycarbonate backbone appears less flexible than the polyether hosts as evidenced by the higher glass transition temperatures. The conductivity for the sodium triflate complexes was measured as ∼ 10-5 S cm-1 at 55°C and the dielectric constant of the host polymer was found to be 3.6 at 3 GHz. The low conductivity is attributed to rigidity of the polycarbonate.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 257-261 |
| Number of pages | 5 |
| Journal | Solid State Ionics |
| Volume | 99 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Aug 11 1997 |
Funding
The authors wish to thank Dr. Thomas T.Y. Wong for assistance with the microwave measurements. This work was supported by the National Science Foundation through the Northwestern University Materials Research Centre Grant DMR-9 120521 ; U.S. Department of Energy Grant DE-FG02-ER45220 and by the Army Research Office Grant DAAL03-90-G0044. M.F. gratefully acknowledgesa Fulbright Postdoctoral Fellowship.
Keywords
- Ion conductivity
- Polycarbonate
- Polymer electrolyte
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics