Functional Bimetal Co‐Modification for Boosting Large‐Current‐Density Seawater Electrolysis by Inhibiting Adsorption of Chloride Ions

Abstract Designing efficient and durable electrocatalysts for seawater splitting to avoid undesired chlorine evolution reaction and resist the corrosive seawater is crucial for seawater electrolysis technology. Herein, a functional bimetal (Co and Fe) is designed specifically to modify nickel phosphide (denoted as CoFe‐Ni 2 P) for boosting seawater splitting, where the Fe atom improves the conductivity of Ni 2 P for improving electron transfer, and the Co atom accelerates the self‐reconstruction process to favorably generate bimetal co‐incorporated NiOOH (CoFe‐NiOOH) species on the electrode surface. Additionally, these in situ‐generated CoFe‐NiOOH species remarkably inhibit the adsorption of Cl − ions but…

• NN
  National Natural Science Foundation of China

  Award: U20A20246
• NK
  National Key Research and Development Program of China

  Award: 2022YFB3803600
• FR
  Fundamental Research Funds for the Central Universities