High Configuration Entropy Activated Lattice Oxygen for O 2 Formation on Perovskite Electrocatalyst

Abstract The single‐phase oxides with elemental complexity and compositional diversity, usually named high entropy oxides, feature homogeneously dispersed multi‐metallic elements in equiatomic concentration. The unusual properties of high entropy oxides endow their potential application in clean‐energy‐related electrocatalysis. However, the possible fundamental relationship between configuration entropy and the underlying catalytic mechanism is still not well understood and established. Herein, a high entropy perovskite cobaltate consisting of five equimolar metals in the B‐site (Mg, Mn, Fe, Co, and Ni) is employed as an electrocatalyst for oxygen evolution reaction (OER). The configuration entropy serves as…

• NN
  National Natural Science Foundation of China

  Award: 22102135
• NS
  Natural Science Foundation of Fujian Province

  Award: 2021J01212759