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Dynamic oxygen adsorption on single-atomic Ruthenium catalyst with high performance for acidic oxygen evolution reaction

Author

Listed:
  • Linlin Cao

    (University of Science and Technology of China)

  • Qiquan Luo

    (University of Science and Technology of China)

  • Jiajia Chen

    (University of Science and Technology of China)

  • Lan Wang

    (Southwest University of Science and Technology)

  • Yue Lin

    (University of Science and Technology of China)

  • Huijuan Wang

    (University of Science and Technology of China)

  • Xiaokang Liu

    (University of Science and Technology of China)

  • Xinyi Shen

    (University of Science and Technology of China)

  • Wei Zhang

    (University of Science and Technology of China)

  • Wei Liu

    (University of Science and Technology of China)

  • Zeming Qi

    (University of Science and Technology of China)

  • Zheng Jiang

    (Shanghai Advanced Research Institute)

  • Jinlong Yang

    (University of Science and Technology of China)

  • Tao Yao

    (University of Science and Technology of China)

Abstract

Achieving active and stable oxygen evolution reaction (OER) in acid media based on single-atom catalysts is highly promising for cost-effective and sustainable energy supply in proton electrolyte membrane electrolyzers. Here, we report an atomically dispersed Ru1-N4 site anchored on nitrogen-carbon support (Ru-N-C) as an efficient and durable electrocatalyst for acidic OER. The single-atom Ru-N-C catalyst delivers an exceptionally intrinsic activity, reaching a mass activity as high as 3571 A gmetal−1 and turnover frequency of 3348 O2 h−1 with a low overpotential of 267 mV at a current density of 10 mA cm−2. The catalyst shows no evident deactivation or decomposition after 30-hour operation in acidic environment. Operando synchrotron radiation X-ray absorption spectroscopy and infrared spectroscopy identify the dynamic adsorption of single oxygen atom on Ru site under working potentials, and theoretical calculations demonstrate that the O-Ru1-N4 site is responsible for the high OER activity and stability.

Suggested Citation

  • Linlin Cao & Qiquan Luo & Jiajia Chen & Lan Wang & Yue Lin & Huijuan Wang & Xiaokang Liu & Xinyi Shen & Wei Zhang & Wei Liu & Zeming Qi & Zheng Jiang & Jinlong Yang & Tao Yao, 2019. "Dynamic oxygen adsorption on single-atomic Ruthenium catalyst with high performance for acidic oxygen evolution reaction," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12886-z
    DOI: 10.1038/s41467-019-12886-z
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