A Highly Soluble Organic Catholyte for Non-Aqueous Redox Flow Batteries

Aman Preet Kaur, Nicolas E. Holubowitch, Selin Ergun, Corrine F. Elliott, Susan A. Odom

Research output: Contribution to journalArticlepeer-review

111 Scopus citations

Abstract

A phenothiazine derivative with high solubility in carbonate solvents containing lithium salts showed extensive overcharge protection and, as a result, has been evaluated as a catholyte for non-aqueous redox flow batteries. We report the testing of 3,7-bis(trifluoromethyl)-N-ethylphenothiazine as a catholyte and 2,3,6-trimethylquinoxaline as the anolyte in redox flow batteries containing 0.05, 0.15, and 0.35M active material and found the longest capacity retention over about 60cycles at 0.15M. To our knowledge, this is the most soluble catholyte candidate with a robust radical cation.

Original languageEnglish
Pages (from-to)476-480
Number of pages5
JournalEnergy Technology
Volume3
Issue number5
DOIs
StatePublished - May 1 2015

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

  • Electron transfer
  • Energy storage
  • Organic electrolyte
  • Quinoxaline
  • Redox flow batteries

ASJC Scopus subject areas

  • General Energy

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