Fabricating Lattice‐Confined Pt Single Atoms With High Electron‐Deficient State for Alkali Hydrogen Evolution Under Industrial‐Current Density

Abstract The confining effect is essential to regulate the activity and stability of single‐atom catalysts (SACs), but the universal fabrication of confined SACs is still a great challenge. Here, various lattice‐confined Pt SACs supported by different carriers are constructed by a universal co‐reduction approach. Notably, Pt single atoms confined in the lattice of Ni(OH) 2 (Pt 1 /Ni(OH) 2 ) with a high electron‐deficient state exhibit excellent activity for basic hydrogen evolution reaction (HER). Specifically, Pt 1 /Ni(OH) 2 just requires 15 mV to get 10 mA cm −2 and the mass activity of Pt 1 /Ni(OH) 2 is 15 times of commercial Pt/C. Moreover, Pt 1 /Ni(OH) 2 assembled in an alkaline water electrolyzer shows…

• NN
  National Natural Science Foundation of China

  Awards: W2411009, 22408011
• NK
  National Key Research and Development Program of China

  Award: 2022YFB3807500
• FR
  Fundamental Research Funds for the Central Universities

  Award: ZY2316