Rare-Earth-Modified NiS 2 Improves OH Coverage for an Industrial Alkaline Water Electrolyzer

The low coverage rate of anode OH adsorption under high current density conditions has become an important factor restricting the development of an industrial alkaline water electrolyzer (AWE). Here, we present our rare earth modification promotion strategy on using the rare earth oxygen-friendly interface to increase the OH coverage of the NiS2 surface for efficient AWE anode catalysis. Density functional theory calculations predict that rare earths can enhance the coverage of surface OH, and the synthesis reaction mechanism is discussed in the synthesis process spectrum. Experimentally, by preparing a series of rare-earth-modified NiS2, the relationship between OH coverage, active site density, and catalytic…

• NN
  National Natural Science Foundation of China

  Awards: 22221001, 21931001, 22271124
• HE
  Higher Education Discipline Innovation Project

  Award: B20027
• NK
  National Key Research and Development Program of China

  Award: 2021YFA1501101
• FR
  Fundamental Research Funds for the Central Universities

  Awards: lzujbky-2022-it18, lzujbky-2023-eyt03, lzujbky-2021-sp62
• SF
  Special Fund Project of Guiding Scientific and Technological Innovation Development of Gansu Province

  Award: 2019ZX-04