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 journalArticlepeer-review

44 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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