Unraveling the electronegativity-dominated intermediate adsorption on high-entropy alloy electrocatalysts

Abstract High-entropy alloys have received considerable attention in the field of catalysis due to their exceptional properties. However, few studies hitherto focus on the origin of their outstanding performance and the accurate identification of active centers. Herein, we report a conceptual and experimental approach to overcome the limitations of single-element catalysts by designing a FeCoNiXRu (X: Cu, Cr, and Mn) High-entropy alloys system with various active sites that have different adsorption capacities for multiple intermediates. The electronegativity differences between mixed elements in HEA induce significant charge redistribution and create highly active Co and Ru sites with optimized energy…

• NN
  National Natural Science Foundation of China

  Awards: 52073124, B13025, 51803077
• GO
  Government of Jiangsu Province
• JU
  Jiangnan University
• MO
  Ministry of Education, India
• NS
  Natural Science Foundation of Jiangsu Province

  Awards: 2018M630517, B13025, 2019T120389, BK20180627
• HE
  Higher Education Discipline Innovation Project

  Award: B13025
• FR
  Fundamental Research Funds for the Central Universities

  Award: B13025