Dynamic Restructuring of Carbon Nanotube-Supported High-Entropy Alloys Enabling Efficient Oxygen Electrocatalysis

Oxygen electrocatalysis, mainly including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), is a cornerstone in rechargeable metal–air batteries. However, these reactions are sluggish due to the four-electron transfer process and the linear scaling relationship of the intermediate binding strength. Herein, we have rationally developed a hybrid composite consisting of high-entropy alloy nanoparticles (NPs) encapsulated in carbon nanotubes (CNTs) to significantly improve the electrocatalytic performance. In situ spectroscopy investigations and theoretical calculations disclose that high-entropy alloys undergo dynamic reconstruction to form MOOH and M–OH (M represents metallic elements) as…

• NN
  National Natural Science Foundation of China

  Awards: 52501203, 52225104, 52071084
• SA
  Science and Technology Commission of Shanghai Municipality

  Award: 22520710600
• SP
  Shanxi Provincial Key Research and Development Project

  Award: 2024CY2-GJHX-65