Robust Interfacial Hydrogen‐Bond Network on Positively Charged Ru‐N‐Ni Dual Sites Boosts Alkaline Hydrogen Electrocatalysis

Abstract Ruthenium (Ru)‐based dual‐site catalysts can efficiently accelerate alkaline hydrogen electrocatalytic kinetics by virtue of the well‐balanced competitive adsorptions of multiple reaction intermediates. However, their insufficient mass transfer makes them far away from the applications, largely lying to the challenge of precisely manipulating the interface water structure. Herein, a concept of nitrogen‐bridged positively charged dual sites with a robust interfacial hydrogen‐bond network is presented for enhancing alkaline hydrogen oxidation and evolution reactions (HOR and HER). The positively charged Ru and Ni sites are demonstrated to trigger the ordered water orientation with the favorable “O‐down”…

• NN
  National Natural Science Foundation of China

  Awards: 52271170, 52471198