Abstract

We show the synthesis of a redox‐active quinone, 2‐methoxy‐1,4‐hydroquinone (MHQ), from a bio‐based feedstock and its suitability as electrolyte in aqueous redox flow batteries. We identified semiquinone intermediates at insufficiently low pH and quinoid radicals as responsible for decomposition of MHQ under electrochemical conditions. Both can be avoided and/or stabilized, respectively, using H 3 PO 4 electrolyte, allowing for reversible cycling in a redox flow battery for hundreds of cycles.
Original languageEnglish
Number of pages5
JournalAngewandte Chemie / International Edition
DOIs
Publication statusAccepted/In press - 20 Aug 2020

Keywords

  • Quinone
  • Vanillin
  • Lignin
  • Redox flow
  • Energy storage
  • Radical

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  • Projects

    Activities

    • 2 Talk at conference or symposium
    • 1 Competition (Participation in/Organisation of)

    2-Methoxyhydroquinone from Vanillin as Bio-Based Active Material for Redox-Flow Batteries

    Werner Schlemmer (Speaker), Philipp Nothdurft (Contributor), Wolfgang Kern (Contributor), Philipp Frühwirt (Contributor), Max Schmallegger (Contributor), Georg Gescheidt-Demner (Contributor), Roland Fischer (Contributor), Eleonore Siham Mourad (Contributor), Stefan Freunberger (Contributor), Stefan Spirk (Contributor)
    4 Apr 2019

    Activity: Talk or presentationTalk at conference or symposiumScience to science

    Science Slam Graz 2019

    Werner Schlemmer (Participant)
    27 May 2019

    Activity: Participation in or organisation ofCompetition (Participation in/Organisation of)

    Kraft lignin based redox-flow batteries

    Werner Schlemmer (Speaker), Philipp Nothdurft (Contributor), Wolfgang Kern (Contributor), Stefan Spirk (Contributor)
    6 Jun 2019

    Activity: Talk or presentationTalk at conference or symposiumScience to science

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