Symmetric, Robust, and High-Voltage Organic Redox Flow Battery Model Based on a Helical Carbenium Ion Electrolyte

Jules Moutet, José M. Veleta, Thomas L. Gianetti

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Redox flow batteries (RFBs) represent a promising technology for grid-scale integration of renewable energy. However, cross-contamination problems, encountered with distinct catholyte and anolyte, limit the development of reliable organic RFBs. Herein, we report the first use of a helical carbocation with three oxidation states, for the development of symmetric cells. Essential kinetic properties of this molecule were assessed by cyclic voltammetry. Its stability was then evaluated by mono- and bi-electronic cycling experiments, resulting in 550 and 80 cycles respectively, with high-capacity retention. This helical ion-based electrolyte achieved a proof-of-principle 2.12 V open circuit potential as an all-organic nonaqueous symmetric RFB.

Original languageEnglish (US)
Pages (from-to)9-14
Number of pages6
JournalACS Applied Energy Materials
Volume4
Issue number1
DOIs
StatePublished - Jan 25 2021

Keywords

  • electrochemistry
  • helical carbenium
  • nonaqueous RFB
  • organic electrolyte
  • symmetric redox flow battery

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Chemistry

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