Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (3): 425-430.doi: 10.1007/s40242-020-0104-4

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Ru Nanoparticles Supported on Co-Embedded N-Doped Carbon Nanotubes as Efficient Electrocatalysts for Hydrogen Evolution in Basic Media

YAN Baolin1, LIU Dapeng1, FENG Xilan1, SHAO Mingzhe1, ZHANG Yu1,2,3   

  1. 1. Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China 2. International Research Institute for Multidisciplinary Science, Beihang University, Beijing 100191, P. R. China;
    3. Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, P. R. China
  • Received:2020-04-11 Revised:2020-05-06 Online:2020-06-01 Published:2020-05-30
  • Contact: LIU Dapeng, ZHANG Yu E-mail:liudp@buaa.edu.cn;jade@buaa.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.51972008, 51925202).

Abstract: A challenging but urgent task is to construct efficient and robust hydrogen evolution reaction(HER) electrocatalysts for practically feasible and sustainable hydrogen production through alkaline water electrolysis. Herein we report a simple and mild pyrolysis method to synthesize the efficient Ru nanoparticles(NPs) supported on Co-embedded N-doped carbon nanotubes(Ru/Co-NCNTs) catalyst for HER in basic media. The Ru/Co-NCNTs display remarkable performance with a low overpotential of only 35 mV at 10 mA/cm2, a small Tafel slope(36 mV/dec), and a high mass activity in 1 mol/L KOH, which is superior to commercial 20% Pt/C catalyst. This excellent performance is benefited from the enhanced conductivity of N-doped carbon nanotubes(NCNTs) and high intrinsic activity triggered by synergistic coupling between Ru NPs and Co-embedded N-doped carbon nanotubes(Co-NCNTs).

Key words: Carbon nanotube, Ru nanoparticle, Hydrogen evolution reaction (HER), Electrocatalyst