Acta Chimica Sinica ›› 2022, Vol. 80 ›› Issue (10): 1394-1400.DOI: 10.6023/A22070309 Previous Articles     Next Articles

Article

双金属氮化物NiMoN析氢催化剂制备及其电解海水析氢性能的研究

蒋博龙a,b,*(), 崔艳艳a,b, 史顺杰a,b, 姜楠a, 谭伟强b   

  1. a 青岛理工大学 滨海人居环境学术创新中心 青岛 266000
    b 青岛理工大学 环境与市政工程学院 青岛 266000
  • 投稿日期:2022-07-15 发布日期:2022-09-19
  • 通讯作者: 蒋博龙
  • 基金资助:
    国家自然科学基金(22008134)

Preparation of Highly Active Transition Bimetallic Nitride NiMoN Hydrogen Evolution Reaction (HER) Catalyst and Its Performance Study in Seawater Electrolysis

Bolong Jianga,b(), Yanyan Cuia,b, Shunjie Shia,b, Nan Jianga, Weiqiang Tanb   

  1. a Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao 266000, China
    b Institute of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266000, China
  • Received:2022-07-15 Published:2022-09-19
  • Contact: Bolong Jiang
  • Supported by:
    National Natural Science Foundation of China(22008134)

Hydrogen production by water electrolysis was supposed to be the most potential green hydrogen production technology. The development of high-efficiency hydrogen evolution reaction (HER) catalyst is of great significance for its large-scale promotion. In this study, nickel chloride and ammonium molybdate were used as nickel and molybdenum sources respectively to obtain the precursor of NiMo bimetallic catalyst by in-situ growth method. The dinitrile diamine was used as nitrogen source and a series of NiMoxN@NC (x represents the molar ratio of ammonium molybdate and nickel chloride) catalysts were prepared by high temperature nitridation temperature programmed method and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The HER performance of as prepared catalysts was tested in 1 mol/L KOH solution and simulated seawater respectively. Results showed that all NiMoxN@NC catalysts have presented a relatively high conductivity (Rct<1 Ω) and intrinsic catalytic activity (Tafel slope of 103~168 mV/dec). Among them, the NiMo0.75N@NC catalyst posessed the highest limiting current density (–178 mA/cm2) and the lowest overpotential η at certain current densities of 10 mA/cm2 and 100 mA/cm2 (η10=0.164 V, η100=0.448 V). Furthermore, the NiMo0.75N@NC catalyst has also presented a relatively high stability in KOH solution and seawater.

Key words: hydrogen energy source, transition bimetallic nitride catalyst, NiMoN@NC catalyst, hydrogen production by seawater, hydrogen evolution reaction (HER) process