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A sodium-ion sulfide solid electrolyte with unprecedented conductivity at room temperature

Author

Listed:
  • A. Hayashi

    (Osaka Prefecture University)

  • N. Masuzawa

    (Osaka Prefecture University)

  • S. Yubuchi

    (Osaka Prefecture University)

  • F. Tsuji

    (Osaka Prefecture University)

  • C. Hotehama

    (Osaka Prefecture University)

  • A. Sakuda

    (Osaka Prefecture University)

  • M. Tatsumisago

    (Osaka Prefecture University)

Abstract

Solid electrolytes are key materials to enable solid-state rechargeable batteries, a promising technology that could address the safety and energy density issues. Here, we report a sulfide sodium-ion conductor, Na2.88Sb0.88W0.12S4, with conductivity superior to that of the benchmark electrolyte, Li10GeP2S12. Partial substitution of antimony in Na3SbS4 with tungsten introduces sodium vacancies and tetragonal to cubic phase transition, giving rise to the highest room-temperature conductivity of 32 mS cm−1 for a sintered body, Na2.88Sb0.88W0.12S4. Moreover, this sulfide possesses additional advantages including stability against humid atmosphere and densification at much lower sintering temperatures than those (>1000 °C) of typical oxide sodium-ion conductors. The discovery of the fast sodium-ion conductors boosts the ongoing research for solid-state rechargeable battery technology with high safety, cost-effectiveness, large energy and power densities.

Suggested Citation

  • A. Hayashi & N. Masuzawa & S. Yubuchi & F. Tsuji & C. Hotehama & A. Sakuda & M. Tatsumisago, 2019. "A sodium-ion sulfide solid electrolyte with unprecedented conductivity at room temperature," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13178-2
    DOI: 10.1038/s41467-019-13178-2
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    Cited by:

    1. Dewu Zeng & Jingming Yao & Long Zhang & Ruonan Xu & Shaojie Wang & Xinlin Yan & Chuang Yu & Lin Wang, 2022. "Promoting favorable interfacial properties in lithium-based batteries using chlorine-rich sulfide inorganic solid-state electrolytes," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    2. Aziam, Hasna & Larhrib, Badre & Hakim, Charifa & Sabi, Noha & Ben Youcef, Hicham & Saadoune, Ismael, 2022. "Solid-state electrolytes for beyond lithium-ion batteries: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    3. Shuo Wang & Jiamin Fu & Yunsheng Liu & Ramanuja Srinivasan Saravanan & Jing Luo & Sixu Deng & Tsun-Kong Sham & Xueliang Sun & Yifei Mo, 2023. "Design principles for sodium superionic conductors," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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