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Ambipolar zinc-polyiodide electrolyte for a high-energy density aqueous redox flow battery

Author

Listed:
  • Bin Li

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

  • Zimin Nie

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

  • M. Vijayakumar

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

  • Guosheng Li

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

  • Jun Liu

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

  • Vincent Sprenkle

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

  • Wei Wang

    (Energy and Environment Directorate, Pacific Northwest National Laboratory)

Abstract

Redox flow batteries are receiving wide attention for electrochemical energy storage due to their unique architecture and advantages, but progress has so far been limited by their low energy density (~25 Wh l−1). Here we report a high-energy density aqueous zinc-polyiodide flow battery. Using the highly soluble iodide/triiodide redox couple, a discharge energy density of 167 Wh l−1 is demonstrated with a near-neutral 5.0 M ZnI2 electrolyte. Nuclear magnetic resonance study and density functional theory-based simulation along with flow test data indicate that the addition of an alcohol (ethanol) induces ligand formation between oxygen on the hydroxyl group and the zinc ions, which expands the stable electrolyte temperature window to from −20 to 50 °C, while ameliorating the zinc dendrite. With the high-energy density and its benign nature free from strong acids and corrosive components, zinc-polyiodide flow battery is a promising candidate for various energy storage applications.

Suggested Citation

  • Bin Li & Zimin Nie & M. Vijayakumar & Guosheng Li & Jun Liu & Vincent Sprenkle & Wei Wang, 2015. "Ambipolar zinc-polyiodide electrolyte for a high-energy density aqueous redox flow battery," Nature Communications, Nature, vol. 6(1), pages 1-8, May.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7303
    DOI: 10.1038/ncomms7303
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    Cited by:

    1. Xu, Zhicheng & Fan, Qi & Li, Yang & Wang, Jun & Lund, Peter D., 2020. "Review of zinc dendrite formation in zinc bromine redox flow battery," Renewable and Sustainable Energy Reviews, Elsevier, vol. 127(C).
    2. Tawalbeh, Muhammad & Murtaza, Sana Z.M. & Al-Othman, Amani & Alami, Abdul Hai & Singh, Karnail & Olabi, Abdul Ghani, 2022. "Ammonia: A versatile candidate for the use in energy storage systems," Renewable Energy, Elsevier, vol. 194(C), pages 955-977.
    3. Zhang, Ziyu & Ding, Tao & Zhou, Quan & Sun, Yuge & Qu, Ming & Zeng, Ziyu & Ju, Yuntao & Li, Li & Wang, Kang & Chi, Fangde, 2021. "A review of technologies and applications on versatile energy storage systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 148(C).
    4. Wei, L. & Zhao, T.S. & Zeng, L. & Zhou, X.L. & Zeng, Y.K., 2016. "Copper nanoparticle-deposited graphite felt electrodes for all vanadium redox flow batteries," Applied Energy, Elsevier, vol. 180(C), pages 386-391.
    5. Yuhua Xia & Mengzheng Ouyang & Vladimir Yufit & Rui Tan & Anna Regoutz & Anqi Wang & Wenjie Mao & Barun Chakrabarti & Ashkan Kavei & Qilei Song & Anthony R. Kucernak & Nigel P. Brandon, 2022. "A cost-effective alkaline polysulfide-air redox flow battery enabled by a dual-membrane cell architecture," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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