Decoupling Conductivity and Solubility in Electrolytes Using Microemulsions

Jing Peng, Nelly M. Cantillo, Ye Xiao, K. McKensie Nelms, Lacey S. Roberts, Gabriel Goenaga, Adam Imel, Brian Andrew Barth, Mark Dadmun, Douglas G. Hayes, Thomas Zawodzinski

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Redox flow batteries have recently received considerable attention as possible large-scale energy storage devices, but their low energy density has inhibited widespread application. In this work, a novel strategy of decoupling conductivity and solubility of electrolytes using microemulsion is put forward to enhance ionic conduction of non-aqueous electrolytes, increase the selectivity of active species, improve the battery voltage, and eventually achieve the possibility of high energy density. We report a study of the electrochemistry of ferrocene in single phase Tween® 20/1-butanol/H 2 O/toluene microemulsion system at 20 C. At low and intermediate surfactant to water weight ratios (< 0.5/0.5), the voltammogram exhibits reversible electrochemical behavior, while at high surfactant levels the curves show lower levels of reversibility. The latter voltammograms have a form typically associated with high resistance in …
Original languageEnglish (US)
JournalJournal of the Electrochemical Society
DOIs
StatePublished - Aug 4 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

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