Tailored Interatomic Interactions in High-Entropy Alloys for Enhanced Electrocatalytic Hydrogen Evolution Reaction in Alkaline Water

Interatomic interactions play a crucial role in electrocatalysts for the efficient hydrogen evolution reaction (HER). However, understanding the effect of interatomic interactions in high-entropy alloys (HEAs) on HER is challenging due to their complex compositions. In this study, we meticulously designed a series of quinary and senary HEAs (PtPd- and PtPdRu-HEA) with tailored interatomic interactions. Notably, a specific hydrogen spillover pathway facilitated by atomic interactions in PtPd-HEA was unveiled. By means of the hydrogen spillover effect (HSE), a decent alkaline HER performance was achieved with PtPd-HEA, exhibiting an overpotential of only 12 mV at 10 mA cm–2, and a stability exceeding 200 h in 1…

• NN
  National Natural Science Foundation of China

  Awards: 52225606, 52302308
• NS
  National Synchrotron Radiation Research Center
• NS
  National Science and Technology Council

  Award: 113-2112-M-213-018
• NO
  National Outstanding Youth Science Fund Project of National Natural Science Foundation of China
• NK
  National Key Research and Development Program of China

  Award: 2021YFF0501900
• KR
  Key Research and Development Projects of Shaanxi Province

  Award: 2024CY-GJHX-28