Li-7 NMR measurements of polymer gel electrolytes

Research output: Contribution to journalArticle

Abstract

Ion conducting polymer gels prepared from (ethylene oxide)(n) grafted methacrylates, ethylene carbonate (EC), gamma butyrolactone (gBL), and lithium hexafluorophosphate are studied by means of nuclear magnetic resonance spectroscopy, This study shows that there are at least two possible lithium sites with different mobility. The lithium-ions with lower mobility dominate at room temperature, but this is changed as the temperature is increased. The NMR results also show that the Li-7 spin-spin relaxation time decreases with increasing length of the grafted ethylene oxide side chains, indicating a stronger interaction between the polymer and the Li-ions, and hence, a lower mobility of the Li-ions. (C) 2002 Elsevier Science B.V. All rights reserved.

Details

Authors
  • Josefina Adebahr
  • M Forsyth
  • DR MacFarlane
  • Patrik Gavelin
  • P Jacobsson
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Chemical Sciences

Keywords

  • polymer gel electrolyte, mobility, NMR spectroscopy, ionic interaction
Original languageEnglish
Pages (from-to)303-307
JournalSolid State Ionics
Volume147
Issue number3-4
Publication statusPublished - 2002
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)