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Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries

Author

Listed:
  • Xing Shen

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Quan Zhou

    (Chinese Academy of Sciences)

  • Miao Han

    (Chinese Academy of Sciences)

  • Xingguo Qi

    (Chinese Academy of Sciences)

  • Bo Li

    (Chinese Academy of Sciences)

  • Qiangqiang Zhang

    (Chinese Academy of Sciences)

  • Junmei Zhao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Chinese Academy of Sciences)

  • Chao Yang

    (Chinese Academy of Sciences)

  • Huizhou Liu

    (Chinese Academy of Sciences)

  • Yong-Sheng Hu

    (Chinese Academy of Sciences)

Abstract

Na-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na3(VOPO4)2F nanocomposite exhibits capacity of 142 mAh g−1 at 0.1C, higher than its theoretical capacity (130 mAh g−1). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.

Suggested Citation

  • Xing Shen & Quan Zhou & Miao Han & Xingguo Qi & Bo Li & Qiangqiang Zhang & Junmei Zhao & Chao Yang & Huizhou Liu & Yong-Sheng Hu, 2021. "Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23132-w
    DOI: 10.1038/s41467-021-23132-w
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    Cited by:

    1. Jiyu Zhang & Yongliang Yan & Xin Wang & Yanyan Cui & Zhengfeng Zhang & Sen Wang & Zhengkun Xie & Pengfei Yan & Weihua Chen, 2023. "Bridging multiscale interfaces for developing ionically conductive high-voltage iron sulfate-containing sodium-based battery positive electrodes," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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