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Dynamic evolution and reversibility of single-atom Ni(II) active site in 1T-MoS2 electrocatalysts for hydrogen evolution

Author

Listed:
  • Brian Pattengale

    (Marquette University)

  • Yichao Huang

    (San Diego State University
    Tsinghua University)

  • Xingxu Yan

    (University of California)

  • Sizhuo Yang

    (Marquette University)

  • Sabrina Younan

    (San Diego State University)

  • Wenhui Hu

    (Marquette University)

  • Zhida Li

    (San Diego State University)

  • Sungsik Lee

    (Argonne National Laboratory)

  • Xiaoqing Pan

    (University of California
    University of California)

  • Jing Gu

    (San Diego State University)

  • Jier Huang

    (Marquette University)

Abstract

1T-MoS2 and single-atom modified analogues represent a highly promising class of low-cost catalysts for hydrogen evolution reaction (HER). However, the role of single atoms, either as active species or promoters, remains vague despite its essentiality toward more efficient HER. In this work, we report the unambiguous identification of Ni single atom as key active sites in the basal plane of 1T-MoS2 (Ni@1T-MoS2) that result in efficient HER performance. The intermediate structure of this Ni active site under catalytic conditions was captured by in situ X-ray absorption spectroscopy, where a reversible metallic Ni species (Ni0) is observed in alkaline conditions whereas Ni remains in its local structure under acidic conditions. These insights provide crucial mechanistic understanding of Ni@1T-MoS2 HER electrocatalysts and suggest that the understanding gained from such in situ studies is necessary toward the development of highly efficient single-atom decorated 1T-MoS2 electrocatalysts.

Suggested Citation

  • Brian Pattengale & Yichao Huang & Xingxu Yan & Sizhuo Yang & Sabrina Younan & Wenhui Hu & Zhida Li & Sungsik Lee & Xiaoqing Pan & Jing Gu & Jier Huang, 2020. "Dynamic evolution and reversibility of single-atom Ni(II) active site in 1T-MoS2 electrocatalysts for hydrogen evolution," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17904-z
    DOI: 10.1038/s41467-020-17904-z
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    Cited by:

    1. Zheng Chen & Zhangyun Liu & Xin Xu, 2023. "Dynamic evolution of the active center driven by hemilabile coordination in Cu/CeO2 single-atom catalyst," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Yanghang Pan & Xinzhu Wang & Weiyang Zhang & Lingyu Tang & Zhangyan Mu & Cheng Liu & Bailin Tian & Muchun Fei & Yamei Sun & Huanhuan Su & Libo Gao & Peng Wang & Xiangfeng Duan & Jing Ma & Mengning Din, 2022. "Boosting the performance of single-atom catalysts via external electric field polarization," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    3. Kamran Dastafkan & Xiangjian Shen & Rosalie K. Hocking & Quentin Meyer & Chuan Zhao, 2023. "Monometallic interphasic synergy via nano-hetero-interfacing for hydrogen evolution in alkaline electrolytes," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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