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Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution

Author

Listed:
  • Yang Yang

    (Shanxi University
    Taiyuan University of Technology)

  • Yumin Qian

    (Beijing Institute of Technology, Haidian)

  • Zhaoping Luo

    (Chinese Academy of Sciences)

  • Haijing Li

    (Chinese Academy of Sciences)

  • Lanlan Chen

    (University of Science and Technology of China)

  • Xumeng Cao

    (Chinese Academy of Sciences)

  • Shiqiang Wei

    (University of Science and Technology of China)

  • Bo Zhou

    (Beijing University of Technology)

  • Zhenhua Zhang

    (Hangzhou Dianzi University)

  • Shuai Chen

    (Chinese Academy of Sciences)

  • Wenjun Yan

    (Chinese Academy of Sciences)

  • Juncai Dong

    (Chinese Academy of Sciences)

  • Li Song

    (University of Science and Technology of China)

  • Wenhua Zhang

    (University of Science and Technology of China)

  • Renfei Feng

    (Canadian Light Source)

  • Jigang Zhou

    (Canadian Light Source)

  • Kui Du

    (Chinese Academy of Sciences)

  • Xiuyan Li

    (Chinese Academy of Sciences)

  • Xian-Ming Zhang

    (Shanxi University
    Taiyuan University of Technology)

  • Xiujun Fan

    (Shanxi University
    Xi’an Jiaotong University)

Abstract

Grain boundary controlling is an effective approach for manipulating the electronic structure of electrocatalysts to improve their hydrogen evolution reaction performance. However, probing the direct effect of grain boundaries as highly active catalytic hot spots is very challenging. Herein, we demonstrate a general water-assisted carbothermal reaction strategy for the construction of ultrathin Mo2C nanosheets with high-density grain boundaries supported on N-doped graphene. The polycrystalline Mo2C nanosheets are connected with N-doped graphene through Mo–C bonds, which affords an ultra-high density of active sites, giving excellent hydrogen evolution activity and superior electrocatalytic stability. Theoretical calculations reveal that the dz2 orbital energy level of Mo atoms is controlled by the MoC3 pyramid configuration, which plays a vital role in governing the hydrogen evolution activity. The dz2 orbital energy level of metal atoms exhibits an intrinsic relationship with the catalyst activity and is regarded as a descriptor for predicting the hydrogen evolution activity.

Suggested Citation

  • Yang Yang & Yumin Qian & Zhaoping Luo & Haijing Li & Lanlan Chen & Xumeng Cao & Shiqiang Wei & Bo Zhou & Zhenhua Zhang & Shuai Chen & Wenjun Yan & Juncai Dong & Li Song & Wenhua Zhang & Renfei Feng & , 2022. "Water induced ultrathin Mo2C nanosheets with high-density grain boundaries for enhanced hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34976-1
    DOI: 10.1038/s41467-022-34976-1
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    References listed on IDEAS

    as
    1. Ji-Sen Li & Yu Wang & Chun-Hui Liu & Shun-Li Li & Yu-Guang Wang & Long-Zhang Dong & Zhi-Hui Dai & Ya-Fei Li & Ya-Qian Lan, 2016. "Coupled molybdenum carbide and reduced graphene oxide electrocatalysts for efficient hydrogen evolution," Nature Communications, Nature, vol. 7(1), pages 1-8, September.
    2. S. J. Wang & H. Wang & K. Du & W. Zhang & M. L. Sui & S. X. Mao, 2014. "Deformation-induced structural transition in body-centred cubic molybdenum," Nature Communications, Nature, vol. 5(1), pages 1-9, May.
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    Cited by:

    1. Zheng-Jie Chen & Jiuyi Dong & Jiajing Wu & Qiting Shao & Na Luo & Minwei Xu & Yuanmiao Sun & Yongbing Tang & Jing Peng & Hui-Ming Cheng, 2023. "Acidic enol electrooxidation-coupled hydrogen production with ampere-level current density," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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