Nickel-doped tungsten oxide promotes stable and efficient hydrogen evolution in seawater

作者：Liang, Wanli; Zhou, Mengyan; Lin, Xinyi; Xu, Jinchang; Dong, Pengyu; Le, Zhichen; Yang, Muzi; Chen, Jian; Xie, Fangyan; Wang, Nan; Jin, Yanshuo^*; Meng, Hui

来源：Applied Catalysis B: Environmental , 2023, 325: 122397.

DOI：10.1016/j.apcatb.2023.122397

• Hydrogen evolution
• Seawater
• Tungsten oxide
• Doping
• Non -precious metal

Hydrogen is considered as an efficient energy alternative, and the use of offshore wind power to electrolyze seawater to produce hydrogen will become the future model. Here, nickel-doped tungsten oxide is proposed to realize hydrogen production from seawater. Ni-WOx@NF was prepared experimentally, in which Ni was doped into WOx to replace part of the W sites. There is a volcanic relationship between the amount of Ni doping and the activity of the hydrogen evolution reaction. Particularly in alkaline seawater, Ni-WOx@NF only needs an overpotential of 45.69 mV to reach a current density of 10 mA cm-2 and exhibits stability over 120 h. In addition, theoretical calculations confirmed that Ni doping can optimize the activity of hydrogen evolution re-action. This work proposes that nickel doping can enhance the hydrogen evolution reaction activity of tungsten oxide with excellent corrosion resistance, enabling it to work efficiently and stably in alkaline seawater.

• 单位
  中山大学