Citation: Xinyu Hou, Xuelian Yu, Meng Liu, Hengxing Peng, Lijuan Wu, Libing Liao, Guocheng Lv. Ultrafast synthesis of Mo₂N with highly dispersed Ru for efficient alkaline hydrogen evolution[J]. Chinese Chemical Letters, ;2025, 36(4): 109845. doi: 10.1016/j.cclet.2024.109845 shu

Ultrafast synthesis of Mo₂N with highly dispersed Ru for efficient alkaline hydrogen evolution

Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China

xlyu@cugb.edu.cn

guochenglv@cugb.edu.cn

Received Date: 3 March 2024
Revised Date: 21 March 2024
Accepted Date: 29 March 2024
Available Online: 30 March 2024

Figures(4)

Mo₂N has been identified as a highly promising carrier for electrocatalysis. However, its complex synthesis method, use of toxic gases, and serious effects on supported noble metals catalyst during high-temperature sintering processes have seriously affected its hydrogen evolution reaction (HER) activity and stability. Here, we report an efficient strategy for synthesizing Mo₂N using the high temperature shock (HTS) method in just 1.67 s, while also uniformly loading Ru onto Mo₂N nanosheets. The HTS enables the homogeneous dispersion of the noble metal Ru, leading to an increased electrocatalytic activity, along with a strong charge transfer between Mo₂N and Ru. Ru/Mo₂N exhibited an overpotential of 66 mV at 10 mA/cm² in 1 mol/L KOH. In the evaluation of catalytic activity, Ru/Mo₂N demonstrates superiority over commercial Pt/C catalysts in terms of mass activity (1.71 A/mgRu vs. 0.91 A/mgPt at 200 mV) and turnover frequency (1.41 s⁻¹ vs. 0.18 s⁻¹ at 100 mV). This result provides a rational and effective pathway for the preparation of efficient electrocatalysts.
- Mo₂N,
- Ruthenium,
- Electrocatalysis,
- Hydrogen evolution reaction,
- High temperature shock
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Ultrafast synthesis of Mo2N with highly dispersed Ru for efficient alkaline hydrogen evolution

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通讯作者: 陈斌, bchen63@163.com

Ultrafast synthesis of Mo₂N with highly dispersed Ru for efficient alkaline hydrogen evolution