IDEAS home Printed from https://ideas.repec.org/a/nat/natene/v6y2021i9d10.1038_s41560-021-00879-6.html
   My bibliography  Save this article

Symmetry-breaking design of an organic iron complex catholyte for a long cyclability aqueous organic redox flow battery

Author

Listed:
  • Xiang Li

    (The University of Akron)

  • Peiyuan Gao

    (Pacific Northwest National Laboratory)

  • Yun-Yu Lai

    (The University of Akron)

  • J. David Bazak

    (Pacific Northwest National Laboratory)

  • Aaron Hollas

    (Pacific Northwest National Laboratory)

  • Heng-Yi Lin

    (The University of Akron
    National Yang Ming Chiao Tung University)

  • Vijayakumar Murugesan

    (Pacific Northwest National Laboratory)

  • Shuyuan Zhang

    (The University of Akron)

  • Chung-Fu Cheng

    (The University of Akron)

  • Wei-Yao Tung

    (The University of Akron)

  • Yueh-Ting Lai

    (The University of Akron)

  • Ruozhu Feng

    (Pacific Northwest National Laboratory)

  • Jin Wang

    (The University of Akron)

  • Chien-Lung Wang

    (National Yang Ming Chiao Tung University)

  • Wei Wang

    (Pacific Northwest National Laboratory)

  • Yu Zhu

    (The University of Akron)

Abstract

The limited availability of a high-performance catholyte has hindered the development of aqueous organic redox flow batteries (AORFB) for large-scale energy storage. Here we report a symmetry-breaking design of iron complexes with 2,2′-bipyridine-4,4′-dicarboxylic (Dcbpy) acid and cyanide ligands. By introducing two ligands to the metal centre, the complex compounds (M4[FeII(Dcbpy)2(CN)2], M = Na, K) exhibited up to a 4.2 times higher solubility (1.22 M) than that of M4[FeII(Dcbpy)3] and a 50% increase in potential compared with that of ferrocyanide. The AORFBs with 0.1 M Na4[FeII(Dcbpy)2(CN)2] as the catholyte were demonstrated for 6,000 cycles with a capacity fading rate of 0.00158% per cycle (0.217% per day). Even at a concentration near the solubility limit (1 M Na4[FeII(Dcbpy)2(CN)2]), the flow battery exhibited a capacity fading rate of 0.008% per cycle (0.25% per day) in the first 400 cycles. The AORFB cell with a nearly 1:1 catholyte:anolyte electron ratio achieved a cell voltage of 1.2 V and an energy density of 12.5 Wh l–1.

Suggested Citation

  • Xiang Li & Peiyuan Gao & Yun-Yu Lai & J. David Bazak & Aaron Hollas & Heng-Yi Lin & Vijayakumar Murugesan & Shuyuan Zhang & Chung-Fu Cheng & Wei-Yao Tung & Yueh-Ting Lai & Ruozhu Feng & Jin Wang & Chi, 2021. "Symmetry-breaking design of an organic iron complex catholyte for a long cyclability aqueous organic redox flow battery," Nature Energy, Nature, vol. 6(9), pages 873-881, September.
    • Handle: RePEc:nat:natene:v:6:y:2021:i:9:d:10.1038_s41560-021-00879-6
    DOI: 10.1038/s41560-021-00879-6
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41560-021-00879-6
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/s41560-021-00879-6?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natene:v:6:y:2021:i:9:d:10.1038_s41560-021-00879-6. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.