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Reactive P and S co-doped porous hollow nanotube arrays for high performance chloride ion storage

Author

Listed:
  • Siyang Xing

    (College of Environmental Science and Engineering, Tongji University
    Washington University in St. Louis)

  • Ningning Liu

    (College of Environmental Science and Engineering, Tongji University)

  • Qiang Li

    (College of Environmental Science and Engineering, Tongji University)

  • Mingxing Liang

    (College of Environmental Science and Engineering, Tongji University
    Shenzhen University
    Shenzhen University)

  • Xinru Liu

    (College of Environmental Science and Engineering, Tongji University
    Civil and Environmental Engineering, EPFL)

  • Haijiao Xie

    (Xihu District)

  • Fei Yu

    (Shanghai Ocean University, No 999, Huchenghuan Road)

  • Jie Ma

    (College of Environmental Science and Engineering, Tongji University
    Kashi University)

Abstract

Developing stable, high-performance chloride-ion storage electrodes is essential for energy storage and water purification application. Herein, a P, S co-doped porous hollow nanotube array, with a free ion diffusion pathway and highly active adsorption sites, on carbon felt electrodes (CoNiPS@CF) is reported. Due to the porous hollow nanotube structure and synergistic effect of P, S co-doped, the CoNiPS@CF based capacitive deionization (CDI) system exhibits high desalination capacity (76.1 mgCl– g–1), fast desalination rate (6.33 mgCl– g–1 min–1) and good cycling stability (capacity retention rate of > 90%), which compares favorably to the state-of-the-art electrodes. The porous hollow nanotube structure enables fast ion diffusion kinetics due to the swift ion transport inside the electrode and the presence of a large number of reactive sites. The introduction of S element also reduces the passivation layer on the surface of CoNiP and lowers the adsorption energy for Cl– capture, thereby improving the electrode conductivity and surface electrochemical activity, and further accelerating the adsorption kinetics. Our results offer a powerful strategy to improve the reactivity and stability of transition metal phosphides for chloride capture, and to improve the efficiency of electrochemical dechlorination technologies.

Suggested Citation

  • Siyang Xing & Ningning Liu & Qiang Li & Mingxing Liang & Xinru Liu & Haijiao Xie & Fei Yu & Jie Ma, 2024. "Reactive P and S co-doped porous hollow nanotube arrays for high performance chloride ion storage," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49319-5
    DOI: 10.1038/s41467-024-49319-5
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    References listed on IDEAS

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    1. Ziyao Gao & Chenglong Zhao & Kai Zhou & Junru Wu & Yao Tian & Xianming Deng & Lihan Zhang & Kui Lin & Feiyu Kang & Lele Peng & Marnix Wagemaker & Baohua Li, 2024. "Kirkendall effect-induced uniform stress distribution stabilizes nickel-rich layered oxide cathodes," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Chaoji Chen & Yanwei Wen & Xianluo Hu & Xiulei Ji & Mengyu Yan & Liqiang Mai & Pei Hu & Bin Shan & Yunhui Huang, 2015. "Na+ intercalation pseudocapacitance in graphene-coupled titanium oxide enabling ultra-fast sodium storage and long-term cycling," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
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