Ionic conductivity and electrochemical stability of poly[oligo(ethylene glycol)oxalate]-lithium salt complexes

W. Xu, J. P. Belieres, Charles Angell

Research output: Contribution to journalArticle

48 Scopus citations


A new series of highly conducting polymer electrolytes based on poly[oligo(ethylene glycol)oxalate], P(EGnO) where n represents the number of repeating ethyleneoxy unit, has been prepared. The dielectric constant of the polymer host is higher than that of the pure poly(ethylene oxide) due to the existence of the two carbonyl groups in the repeating unit. A maximum conductivity of 5.9 × 10-5 S cm-1 at 25 °C was obtained for the complex of LiTFSI and P(EG23O) with a molar salt concentration of [Li+]/[EO] = 1:16. The complexes also show good electrochemical stability up to 4.4 V versus Li+/Li.

Original languageEnglish (US)
Pages (from-to)575-580
Number of pages6
JournalChemistry of Materials
Issue number2
Publication statusPublished - 2001


ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this