Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (12): 1867-1873.DOI: 10.1016/S1872-2067(19)63331-0

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Ultrafine Ni-B nanoparticles for efficient hydrogen evolution reaction

Ting Huang, Tao Shen, Mingxing Gong, Shaofeng Deng, Chenglong Lai, Xupo Liu, Tonghui Zhao, Lin Teng, Deli Wang   

  1. Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2019-01-27 Revised:2019-03-04 Online:2019-12-18 Published:2019-09-21
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21573083), the 1000 Young Talent (to Deli Wang), and initiatory financial support from Huazhong University of Science and Technology (HUST). The authors thank the Analytical and Testing Center of HUST for allowing use of its facilities.

Abstract: The search for active, stable, and cost-effective electrocatalysts for hydrogen evolution reaction (HER) is desirable, but it remains a great challenge in the overall water splitting. Here, we report the synthesis of nickel boron nanoparticles supported on Vulcan carbon (Ni-B) via a simple, yet scalable, two-step chemical reduction-annealing strategy. The results of the electrochemical measurements suggest that the overpotentials of Ni-B-400 are 114 and 215 mV (in 1 mol L-1 KOH) at current densities of 10 and 40 mA cm-2, respectively, indicating an exceedingly good electrocatalytic activity in the HER. More importantly, Ni-B maintains a current density of 7.6 mA cm-2 at an overpotential of 0.15 V for 20 h in the durability test. The excellent HER activity of Ni-B-400 is derived from the small particle size and the expanded lattice of Ni, which can optimize the hydrogen absorption energy and enhance the electrocatalytic properties.

Key words: Ni-B, Non-noble electrocatalyst, Hydrogen evolution reaction, Ultrafine nanoparticle, Alkaline electrolyte