Manipulating Interfacial Water Via Metallic Pt 1 Co 6 Sites on Self‐Adaptive Metal Phosphides to Enhance Water Electrolysis

Abstract Metallizing active sites to control the structural and kinetic dissociation of water at the catalyst–electrolyte interface, along with elucidating its mechanism under operating conditions, is a pivotal innovation for the hydrogen evolution reaction (HER). Here, a design of singly dispersed Pt–Co sites in a fully metallic state on nanoporous Co 2 P, tailored for HER, is introduced. An anion‐exchange‐membrane water electrolyzer equipped with this catalyst can achieve the industrial current densities of 1.0 and 2.0 A cm −2 at 1.71 and 1.85 V, respectively. It is revealed that the singly dispersed Pt–Co sites undergo self‐adaptive distortion under operating conditions, which form a Pt 1 Co 6 configuration…

• NN
  National Natural Science Foundation of China

  Awards: 52371221, 52401276
• CP
  China Postdoctoral Science Foundation

  Award: 2024M750870
• NK
  National Key Research and Development Program of China

  Award: 2021YFA1500900