Designing highly efficient oxygen evolution reaction electrocatalyst of high-entropy oxides FeCoNiZrO_x: Theory and experiment.

ABSTRACT: The correlations between the experimental methods and catalytic activities are urgent to be defined for the design of highly efficient catalysts. In this work, a new oxygen evolution reaction electrocatalyst of high-entropy oxide (HEO) FeCoNiZrO_x was designed and analyzed by experimental and theoretical methods. On account of the shortened coordinate bond along with the increased annealing temperature, the atomic/electronic structures of active site were adjusted quantitatively with the aid of the pre-designed correlator of d electron density, which contributed to adjust the catalytic activity of HEO specimens. The prepared HEO specimen exhibited the low overpotentials of 245 mV at 10 mA cm^-2 and 288 mV at 100 mA cm^-2 with small Tafel slope of 35.66 

SUBMITTER: Zhao H 

PROVIDER: S-EPMC10792234 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature