Lithium salt solutions in mixed sulfone and sulfone-carbonate solvents: A walden plot analysis of the maximally conductive compositions

Seung Yul Lee, Kazuhide Ueno, Charles Angell

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

In seeking solutions to the problem of the high viscosity of electrochemically stable sulfone electrolyte solvents for high voltage lithium cells, we have explored a number of binary sulfone + cosolvent systems, including all-sulfone cases. We report systems that at 55 °C are nearly as conductive as the "standard" carbonate-based electrolyte and may merit further study. We employ a plot based on the classical Walden rule as a primary tool for assessing the loss of potential conductivity to undesirable ion-pairing phenomena. To conclude, we briefly consider the possible alternatives to molecular solvent-based electrolytes for high voltage cathode cells.

Original languageEnglish (US)
Pages (from-to)23915-23920
Number of pages6
JournalJournal of Physical Chemistry C
Volume116
Issue number45
DOIs
StatePublished - Nov 15 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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