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

38 Citations (Scopus)

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

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Sulfones
sulfones
Carbonates
Lithium
Electrolytes
carbonates
Salts
lithium
plots
electrolytes
salts
high voltages
Chemical analysis
cell cathodes
Electric potential
Cathodes
Viscosity
Ions
viscosity
conductivity

ASJC Scopus subject areas

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

Cite this

Lithium salt solutions in mixed sulfone and sulfone-carbonate solvents : A walden plot analysis of the maximally conductive compositions. / Lee, Seung Yul; Ueno, Kazuhide; Angell, Charles.

In: Journal of Physical Chemistry C, Vol. 116, No. 45, 15.11.2012, p. 23915-23920.

Research output: Contribution to journalArticle

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