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Unconventional CN vacancies suppress iron-leaching in Prussian blue analogue pre-catalyst for boosted oxygen evolution catalysis

Author

Listed:
  • Zi-You Yu

    (University of Science and Technology of China)

  • Yu Duan

    (University of Science and Technology of China)

  • Jian-Dang Liu

    (University of Science and Technology of China)

  • Yu Chen

    (University of Science and Technology of China)

  • Xiao-Kang Liu

    (University of Science and Technology of China)

  • Wei Liu

    (University of Science and Technology of China)

  • Tao Ma

    (University of Science and Technology of China)

  • Yi Li

    (University of Science and Technology of China)

  • Xu-Sheng Zheng

    (University of Science and Technology of China)

  • Tao Yao

    (University of Science and Technology of China)

  • Min-Rui Gao

    (University of Science and Technology of China)

  • Jun-Fa Zhu

    (University of Science and Technology of China)

  • Bang-Jiao Ye

    (University of Science and Technology of China)

  • Shu-Hong Yu

    (University of Science and Technology of China
    Dalian National Laboratory for Clean Energy)

Abstract

The incorporation of defects, such as vacancies, into functional materials could substantially tailor their intrinsic properties. Progress in vacancy chemistry has enabled advances in many technological applications, but creating new type of vacancies in existing material system remains a big challenge. We show here that ionized nitrogen plasma can break bonds of iron-carbon-nitrogen-nickel units in nickel-iron Prussian blue analogues, forming unconventional carbon-nitrogen vacancies. We study oxygen evolution reaction on the carbon-nitrogen vacancy-mediated Prussian blue analogues, which exhibit a low overpotential of 283 millivolts at 10 milliamperes per square centimeter in alkali, far exceeding that of original Prussian blue analogues and previously reported oxygen evolution catalysts with vacancies. We ascribe this enhancement to the in-situ generated nickel-iron oxy(hydroxide) active layer during oxygen evolution reaction, where the Fe leaching was significantly suppressed by the unconventional carbon-nitrogen vacancies. This work opens up opportunities for producing vacancy defects in nanomaterials for broad applications.

Suggested Citation

  • Zi-You Yu & Yu Duan & Jian-Dang Liu & Yu Chen & Xiao-Kang Liu & Wei Liu & Tao Ma & Yi Li & Xu-Sheng Zheng & Tao Yao & Min-Rui Gao & Jun-Fa Zhu & Bang-Jiao Ye & Shu-Hong Yu, 2019. "Unconventional CN vacancies suppress iron-leaching in Prussian blue analogue pre-catalyst for boosted oxygen evolution catalysis," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10698-9
    DOI: 10.1038/s41467-019-10698-9
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    Cited by:

    1. Ziheng Zhang & Maxim Avdeev & Huaican Chen & Wen Yin & Wang Hay Kan & Guang He, 2022. "Lithiated Prussian blue analogues as positive electrode active materials for stable non-aqueous lithium-ion batteries," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    2. Nattapol Ma & Ryo Ohtani & Hung M. Le & Søren S. Sørensen & Ryuta Ishikawa & Satoshi Kawata & Sareeya Bureekaew & Soracha Kosasang & Yoshiyuki Kawazoe & Koji Ohara & Morten M. Smedskjaer & Satoshi Hor, 2022. "Exploration of glassy state in Prussian blue analogues," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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