Doped sulfone electrolytes for high voltage Li-ion cell applications

Xiaoguang Sun, Charles Angell

Research output: Contribution to journalArticle

87 Scopus citations

Abstract

We show that, with appropriate doping, the ethersulfone-based electrolytes that we earlier reported to have 5.6 V electrochemical windows but poor cycling performance in Li-ion cells, can succeed. We show they can be used to make cells that, at C/20 charge/discharge rates, have cycling performance equal to those with the standard LiPF6-carbonate electrolytes. A difference in performance that develops at higher C is removed by substituting an ethersulfone with one fewer methyl groups, for lower viscosity.

Original languageEnglish (US)
Pages (from-to)1418-1421
Number of pages4
JournalElectrochemistry Communications
Volume11
Issue number7
DOIs
StatePublished - Jul 1 2009

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Keywords

  • Additive
  • Cell cycling
  • Lithium-ion battery
  • Sulfone
  • Vinylene carbonate

ASJC Scopus subject areas

  • Electrochemistry

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