Single Carbon Vacancy Traps Atomic Platinum for Hydrogen Evolution Catalysis

The coordinated configuration of atomic platinum (Pt) has always been identified as an active site with high intrinsic activity for hydrogen evolution reaction (HER). Herein, we purposely synthesize single vacancies in a carbon matrix (defective graphene) that can trap atomic Pt to form the Pt–C3 configuration, which gives exceptionally high reactivity for HER in both acidic and alkaline solutions. The intrinsic activity of Pt–C3 site is valued with a turnover frequency (TOF) of 26.41 s–1 and mass activity of 26.05 A g–1 at 100 mV, respectively, which are both nearly 18 times higher than those of commercial 20 wt % Pt/C. It is revealed that the optimal coordination Pt–C3 has a stronger electron-capture ability…

• NN
  National Natural Science Foundation of China

  Award: 22078064
• NS
  Natural Science Foundation of Fujian Province

  Award: 2021J02009
• AR
  Australian Research Council

  Awards: DP200103043, DE180101030