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Exceptional catalytic effects of black phosphorus quantum dots in shuttling-free lithium sulfur batteries

Author

Listed:
  • Zheng-Long Xu

    (The Hong Kong Polytechnic University
    Seoul National University)

  • Shenghuang Lin

    (The Hong Kong Polytechnic University)

  • Nicolas Onofrio

    (The Hong Kong Polytechnic University)

  • Limin Zhou

    (The Hong Kong Polytechnic University)

  • Fangyi Shi

    (The Hong Kong Polytechnic University)

  • Wei Lu

    (The Hong Kong Polytechnic University)

  • Kisuk Kang

    (Seoul National University)

  • Qiang Zhang

    (Tsinghua University)

  • Shu Ping Lau

    (The Hong Kong Polytechnic University)

Abstract

Lithium sulfur batteries with high energy densities are promising next-generation energy storage systems. However, shuttling and sluggish conversion of polysulfides to solid lithium sulfides limit the full utilization of active materials. Physical/chemical confinement is useful for anchoring polysulfides, but not effective for utilizing the blocked intermediates. Here, we employ black phosphorus quantum dots as electrocatalysts to overcome these issues. Both the experimental and theoretical results reveal that black phosphorus quantum dots effectively adsorb and catalyze polysulfide conversion. The activity is attributed to the numerous catalytically active sites on the edges of the quantum dots. In the presence of a small amount of black phosphorus quantum dots, the porous carbon/sulfur cathodes exhibit rapid reaction kinetics and no shuttling of polysulfides, enabling a low capacity fading rate (0.027% per cycle over 1000 cycles) and high areal capacities. Our findings demonstrate application of a metal-free quantum dot catalyst for high energy rechargeable batteries.

Suggested Citation

  • Zheng-Long Xu & Shenghuang Lin & Nicolas Onofrio & Limin Zhou & Fangyi Shi & Wei Lu & Kisuk Kang & Qiang Zhang & Shu Ping Lau, 2018. "Exceptional catalytic effects of black phosphorus quantum dots in shuttling-free lithium sulfur batteries," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06629-9
    DOI: 10.1038/s41467-018-06629-9
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    Cited by:

    1. Tian, Xiaohui & Che, Lukang & Cheng, Yunnian & Liu, Mengdie & Selabi, Naomie Beolle Songwe & Zhou, Yingke, 2024. "Remarkable chemical adsorption and catalysis of monodisperse metallic cobalt sulfide nanoparticles enable long-cycling Li–S battery with high areal capacity and low shuttle constant," Energy, Elsevier, vol. 288(C).
    2. Siqi Yu & Yu Du & Xianghong Niu & Guangming Li & Da Zhu & Qian Yu & Guizheng Zou & Huangxian Ju, 2022. "Arginine-modified black phosphorus quantum dots with dual excited states for enhanced electrochemiluminescence in bioanalysis," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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