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Cation-driven phase transition and anion-enhanced kinetics for high energy efficiency zinc-interhalide complex batteries

Author

Listed:
  • Wei Zhong

    (Zhejiang University
    Zhejiang University
    Zhejiang University)

  • Hao Cheng

    (Zhejiang University
    Zhejiang University
    Zhejiang University)

  • Shichao Zhang

    (Zhejiang University)

  • Laixi Li

    (Zhejiang University
    Zhejiang University
    Zhejiang University)

  • Chaoqiang Tan

    (Zhejiang University
    Zhejiang University)

  • Wei Chen

    (University of Science and Technology of China)

  • Yingying Lu

    (Zhejiang University
    Zhejiang University
    Zhejiang University)

Abstract

Aqueous Zn-halogen batteries, valued for high safety, large capacity, and low cost, suffer from the polyhalide shuttle effect and chaotic zinc electrodeposition, reducing energy efficiency and lifespan. Here we show a cation-driven positive electrode phase transition to suppress the shuttle effect and achieve uniform zinc electrodeposition, along with an anion kinetic enhancement strategy to improve energy efficiency and lifespan. Taking tetramethylammonium halide (TMAX, X = F, Cl, Br) as a subject, TMA+ promotes oriented zinc (101) deposition on the negative electrode through electrostatic shielding, significantly extending cycling life. Concurrently, it captures I3– on the positive electrode, forming a stable solid-phase interhalide complex that enhances coulombic efficiency. Compared to I3– and TMAI3, X– anions lower the Gibbs free energy differences of I– → I2X– and I2X– → TMAI2X, accelerating I–/I2X–/TMAI2X conversions and improving voltage efficiency. In TMAF-modified electrolytes, zinc interhalide complex batteries achieve a high energy efficiency of 95.2% at 0.2 A g–1 with good reversibility, showing only 0.1% capacity decay per cycle over 1000 cycles. At 1 A g–1, they show a low decay rate of 0.1‰ per cycle across 10,000 cycles. This study provides insights into enhancing energy efficiency and long-term stability for sustainable energy storage.

Suggested Citation

  • Wei Zhong & Hao Cheng & Shichao Zhang & Laixi Li & Chaoqiang Tan & Wei Chen & Yingying Lu, 2025. "Cation-driven phase transition and anion-enhanced kinetics for high energy efficiency zinc-interhalide complex batteries," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-59894-w
    DOI: 10.1038/s41467-025-59894-w
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    References listed on IDEAS

    as
    1. Congxin Xie & Chao Wang & Yue Xu & Tianyu Li & Qiang Fu & Xianfeng Li, 2024. "Reversible multielectron transfer I−/IO3− cathode enabled by a hetero-halogen electrolyte for high-energy-density aqueous batteries," Nature Energy, Nature, vol. 9(6), pages 714-724, June.
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    3. Song Chen & Deluo Ji & Qianwu Chen & Jizhen Ma & Shaoqi Hou & Jintao Zhang, 2023. "Coordination modulation of hydrated zinc ions to enhance redox reversibility of zinc batteries," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    4. Sahel Fajal & Writakshi Mandal & Arun Torris & Dipanjan Majumder & Sumanta Let & Arunabha Sen & Fayis Kanheerampockil & Mandar M. Shirolkar & Sujit K. Ghosh, 2024. "Ultralight crystalline hybrid composite material for highly efficient sequestration of radioiodine," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
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