Demonstrating the Use of a Fungal Synthesized Quinone in a Redox Flow Battery

Charlotte Overgaard Wilhelmsen*, Sebastian Birkedal Kristensen, Oliver Nolte, Ivan A. Volodin, Johan Vormsborg Christiansen, Thomas Isbrandt, Trine Sørensen, Celine Petersen, Teis Esben Sondergaard, Kåre Lehmann Nielsen, Thomas Ostenfeld Larsen, Jens Christian Frisvad, Martin D. Hager, Ulrich S. Schubert, Jens Muff, Jens Laurids Sørensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

5 Citations (Scopus)
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Aqueous organic redox flow batteries (AORFBs) have gained increased interest as a promising solution to store energy from sustainable energy sources. Inspired by naturally occurring bio-quinones, we here propose a new electrolyte based on the fungal compound phoenicin. Phoenicin was produced using the filamentous fungus Penicillium atrosanguineum at a concentration of 1.24 g L−1 liquid medium and extracted using ethyl acetate to a purity exceeding 95 %. The fungus may provide a benefit of high scalability of the biosynthesis-based production of the electroactive substance. Here, we demonstrate the performance of biologically produced phoenicin as a negative electrolyte in an RFB against ferro/ferricyanide, as a proof of concept, giving an initial capacity of 11.75 Ah L−1 and a capacity decay of 2.85 % day−1. For a deeper investigation of the battery setup, in situ attenuated total reflection infrared (ATR-IR) spectra of the phoenicin electrolyte were recorded. Symmetric cell cycling was performed to study the stability of this bio-based active material.

Original languageEnglish
Article numbere202200365
JournalBatteries and Supercaps
Issue number1
Publication statusPublished - Jan 2023

Bibliographical note

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© 2022 The Authors. Batteries & Supercaps published by Wiley-VCH GmbH.


  • aqueous redox flow batteries
  • energy storage
  • filamentous fungi
  • natural products
  • quinones


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