Heteroatom‐Mediated Interactions between Ruthenium Single Atoms and an MXene Support for Efficient Hydrogen Evolution

Abstract A titanium carbide (Ti 3 C 2 T x ) MXene is employed as an efficient solid support to host a nitrogen (N) and sulfur (S) coordinated ruthenium single atom (Ru SA ) catalyst, which displays superior activity toward the hydrogen evolution reaction (HER). X‐ray absorption fine structure spectroscopy and aberration corrected scanning transmission electron microscopy reveal the atomic dispersion of Ru on the Ti 3 C 2 T x MXene support and the successful coordination of Ru SA with the N and S species on the Ti 3 C 2 T x MXene. The resultant Ru SA ‐N‐S‐Ti 3 C 2 T x catalyst exhibits a low overpotential of 76 mV to achieve the current density of 10 mA cm −2 . Furthermore, it is shown that integrating the Ru…

• CU
  City University of Hong Kong
• KA
  King Abdullah University of Science and Technology
• GO
  Government of Western Australia
• AR
  Australian Research Council