Negative‐Valent Platinum Stabilized by Pt─Ni Electron Bridges on Oxygen‐Deficient NiFe‐LDH for Enhanced Electrocatalytic Hydrogen Evolution

Abstract The unique hydrogen adsorption characteristics of negatively charged platinum play a crucial role in enhancing the electrocatalytic hydrogen evolution reaction. However, atomically dispersed Pt atoms are typically anchored to the support through non‐metallic atom bonds, resulting in a high oxidation state. Here, atomically dispersed Pt atoms are anchored in oxygen‐deficient NiFe‐LDH. Electron transfer between Pt and NiFe‐LDH occurs primarily through Pt─Ni bonds rather than the conventional Pt─O bonds. Oxygen vacancies in the NiFe‐LDH promote additional electron transfer from Ni to Pt, thereby reducing the valence state of Pt and enhancing hydrogen adsorption. Meanwhile, the elevated valence state of…

• NN
  National Natural Science Foundation of China

  Award: 52271184 52072255 52250402 22409046
• SA
  Science and Technology Plan Project of Taizhou

  Award: 24gyb14
• NS
  Natural Science Foundation of Zhejiang Province

  Award: LY23E020001
• SF
  Science Fund for Distinguished Young Scholars of Zhejiang Province

  Award: LR22E020003