Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (9): 20220366.doi: 10.7503/cjcu20220366

• Article • Previous Articles     Next Articles

Nitrogen Doped Ultra-thin Carbon Nanosheet Composited Platinum-ruthenium Single Atom Alloy Catalyst for Promoting Electrochemical Hydrogen Evolution Process

FAN Jianling1, TANG Hao2, QIN Fengjuan2, XU Wenjing2, GU Hongfei2, PEI Jiajing3(), CEHN Wenxing2()   

  1. 1.Department of Physics and Engineering Technology,Guilin Normal College,Guilin 541199,China
    2.Energy & Catalysis Center,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China
    3.State Key Lab of Organic?Inorganic Composites,Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China
  • Received:2022-05-21 Online:2022-09-10 Published:2022-06-20
  • Contact: CEHN Wenxing E-mail:peichem@126.com;wxchen@bit.edu.cn
  • Supported by:
    the Beijing Natural Science Foundation, China(2212018)

Abstract:

In order to reduce the amount of precious metals, reduce costs and increase the possibility of large-scale production, the construction of single atom alloy(SAA) is a very feasible solution. Herein, an electrocatalyst with ultra-small PtRu single atom alloy species evenly dispersed on nitrogen doped ultra-thin carbon nanosheets(PtRu SAA/NC) was designed, and its structure was confirmed by synchrotron-radiation-based X-ray absorption fine structure(XAFS) spectroscopy. Compared with pure Ru clusters and nitrogen doped carbon sheets, the PtRu SAA/NC possesses higher hydrogen evolution reaction(HER) catalytic activity and exceptional stability, which exhibits a small Tafel slope of 43 mV/dec and a low overpotential of 54 mV at 10 mA/cm2 during HER in 0.5 mol/L H2SO4 solution. The design of this low-cost and high-efficiency single atom alloy catalyst provides a new research direction for the development of clean energy structure conversion.

Key words: Single-atom alloys catalyst, Nitrogen doped ultra-thin carbon nanosheets, Electrochemical hydrogen evolution, Electrocatalyst

CLC Number: 

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