Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (7): 1575.doi: 10.7503/cjcu20200161

• Physical Chemistry • Previous Articles     Next Articles

Preparation of Ni2P/N, S co-Doped Reduced Graphene Oxide Composites and Their Electrocatalytic Properties for Hydrogen Evolution

ZHAO Guoqing,YUAN Zhao,WANG Lian,GUO Zhuo*()   

  1. Department of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
  • Received:2020-03-25 Online:2020-07-10 Published:2020-05-09
  • Contact: Zhuo GUO E-mail:guozhuochina@syuct.edu.cn
  • Supported by:
    † Natural Science Foundation of Liaoning Provincial Science and Technology Department, China(2019-ZD-0084);Natural Science Foundation of Liaoning Provincial Science and Technology Department, China(XXLJ2019008)

Abstract:

Developing new type of electrolyzed water catalysts is very important. In this work, nickel phosphide nanocrystals supported on N, S co-doped reduced graphene oxide(Ni2P/NSRGO) as a high activity catalyst was synthesized by the simple hydrothermal process. The graphene can anchor nickel phosphide and improve catalytic performance. The results of electrochemical test showed that the Ni2P/NSRGO composite electrocatalyst showed better hydrogen evolution performance than Ni2P/NRGO and Ni2P/RGO catalysts, indicating the addition of N and S has a positive effect on the improvement of hydrogen evolution performance. The Ni2P/NSRGO nanocrystals catalyst shows excellent performance with a small Tafel slope of 35 mV/dec, longterm durability and a low overpotential(η10=140 mV) in 0.5 mol/L H2SO4 for the hydrogen evolution reaction(HER).

Key words: Hydrogen evolution reaction, Electrocatalyst, Nickel phosphide nanocrystal, Nitrogen-sulfur double-doping

CLC Number: 

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