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Metal-support interaction boosts the stability of Ni-based electrocatalysts for alkaline hydrogen oxidation

Author

Listed:
  • Xiaoyu Tian

    (Tongji University, Shanghai Institute of Pollution Control and Ecological Security)

  • Renjie Ren

    (Wuhan University)

  • Fengyuan Wei

    (Wuhan University)

  • Jiajing Pei

    (Chinese Academy of Sciences)

  • Zhongbin Zhuang

    (Beijing University of Chemical Technology)

  • Lin Zhuang

    (Wuhan University)

  • Wenchao Sheng

    (Tongji University, Shanghai Institute of Pollution Control and Ecological Security)

Abstract

Ni-based hydrogen oxidation reaction (HOR) electrocatalysts are promising anode materials for the anion exchange membrane fuel cells (AEMFCs), but their application is hindered by their inherent instability for practical operations. Here, we report a TiO2 supported Ni4Mo (Ni4Mo/TiO2) catalyst that can effectively catalyze HOR in alkaline electrolyte with a mass activity of 10.1 ± 0.9 A g−1Ni and remain active even up to 1.2 V. The Ni4Mo/TiO2 anode AEMFC delivers a peak power density of 520 mW cm−2 and durability at 400 mA cm−2 for nearly 100 h. The origin for the enhanced activity and stability is attributed to the down-shifted d band center, caused by the efficient charge transfer from TiO2 to Ni. The modulated electronic structure weakens the binding strength of oxygen species, rendering a high stability. The Ni4Mo/TiO2 has achieved greatly improved stability both in half cell and single AEMFC tests, and made a step forward for feasibility of efficient and durable AEMFCs.

Suggested Citation

  • Xiaoyu Tian & Renjie Ren & Fengyuan Wei & Jiajing Pei & Zhongbin Zhuang & Lin Zhuang & Wenchao Sheng, 2024. "Metal-support interaction boosts the stability of Ni-based electrocatalysts for alkaline hydrogen oxidation," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-023-44320-w
    DOI: 10.1038/s41467-023-44320-w
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    References listed on IDEAS

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    1. Yu Duan & Zi-You Yu & Li Yang & Li-Rong Zheng & Chu-Tian Zhang & Xiao-Tu Yang & Fei-Yue Gao & Xiao-Long Zhang & Xingxing Yu & Ren Liu & Hong-He Ding & Chao Gu & Xu-Sheng Zheng & Lei Shi & Jun Jiang & , 2020. "Bimetallic nickel-molybdenum/tungsten nanoalloys for high-efficiency hydrogen oxidation catalysis in alkaline electrolytes," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    2. Zhongbin Zhuang & Stephen A. Giles & Jie Zheng & Glen R. Jenness & Stavros Caratzoulas & Dionisios G. Vlachos & Yushan Yan, 2016. "Nickel supported on nitrogen-doped carbon nanotubes as hydrogen oxidation reaction catalyst in alkaline electrolyte," Nature Communications, Nature, vol. 7(1), pages 1-8, April.
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