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A tellurium iodide perovskite structure enabling eleven-electron transfer in zinc ion batteries

Author

Listed:
  • Shixun Wang

    (83 Tat Chee Avenue)

  • Zhiquan Wei

    (83 Tat Chee Avenue)

  • Hu Hong

    (83 Tat Chee Avenue)

  • Xun Guo

    (83 Tat Chee Avenue)

  • Yiqiao Wang

    (83 Tat Chee Avenue)

  • Ze Chen

    (83 Tat Chee Avenue)

  • Dechao Zhang

    (Hong Kong Center for Cerebro-Cardiovascular Health Engineering (COCHE), Shatin, NT)

  • Xiaoyu Zhang

    (Jilin University)

  • Xuyong Yang

    (Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University)

  • Chunyi Zhi

    (83 Tat Chee Avenue
    Hong Kong Center for Cerebro-Cardiovascular Health Engineering (COCHE), Shatin, NT
    Kowloon)

Abstract

The growing potential of low-dimensional metal-halide perovskites as conversion-type cathode materials is limited by electrochemically inert B-site cations, diminishing the battery capacity and energy density. Here, we design a benzyltriethylammonium tellurium iodide perovskite, (BzTEA)2TeI6, as the cathode material, enabling X- and B-site elements with highly reversible chalcogen- and halogen-related redox reactions, respectively. The engineered perovskite can confine active elements, alleviate the shuttle effect and promote the transfer of Cl- on its surface. This allows for the utilization of inert high-valent tellurium cations, eventually realizing a special eleven-electron transfer mode (Te6+/Te4+/Te2-, I+/I0/I-, and Cl0/Cl-) in suitable electrolytes. The Zn||(BzTEA)2TeI6 battery exhibited a high capacity of up to 473 mAh g-1Te/I and a large energy density of 577 Wh kg-1 Te/I at 0.5 A g-1, with capacity retention up to 82% after 500 cycles at 3 A g-1. The work sheds light on the design of high-energy batteries utilizing chalcogen-halide perovskite cathodes.

Suggested Citation

  • Shixun Wang & Zhiquan Wei & Hu Hong & Xun Guo & Yiqiao Wang & Ze Chen & Dechao Zhang & Xiaoyu Zhang & Xuyong Yang & Chunyi Zhi, 2025. "A tellurium iodide perovskite structure enabling eleven-electron transfer in zinc ion batteries," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55385-6
    DOI: 10.1038/s41467-024-55385-6
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