Noble Metal Phosphides Supported on CoNi Metaphosphate for Efficient Overall Water Splitting

Transition metal metaphosphates and noble metal phosphides prepared under similar conditions are potential hybrid catalysts for electrocatalytic water splitting, which is of great significance for H2 production. Herein, the structure and electrocatalytic activity of different noble metal species (i.e., Rh, Pd, Ir) on CoNiP4O12 nanoarrays have been systematically studied. Due to the different formation energies of noble metal phosphides, the phosphides of Rh (RhPx) and Pd (PdPx) as well as the noble metal Ir are obtained under the same phosphorylation conditions perspectively. RhPx/CoNiP4O12 and PdPx/CoNiP4O12 exhibit much better HER activity than Ir/CoNiP4O12 due to the advantages of phosphides. Density…

• NN
  National Natural Science Foundation of China

  Awards: 52001007, 22209129, 22071038, 22209178, 22202003, 21871065
• XJ
  Xi’an Jiaotong University

  Award: HG6J024
• NK
  National Key Research and Development Program of China

  Award: 2022YFA1504800
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2021NTST06