Rapid Defect Engineering in FeCoNi/FeAl2O4 Hybrid for Enhanced Oxygen Evolution Catalysis: A Pathway to High-Performance Electrocatalysts

This study harnesses ultrasonic cavitation for rapid and controlled introduction of different types of defects in FeCoNi/FeAl2O4 hybrid coatings, optimizing OER catalytic activity. Theoretical calculations and experiments demonstrate that the different defects optimize the coordination environment and facilitate the activation of surface reconstruction into true catalytic activity centers at lower potentials. Moreover, it demonstrates exceptional durability, maintaining stable oxygen production at a high current density of 300 mA cm-2 for over 120 hours. This work not only presents a novel pathway for designing advanced electrocatalysts but also deepens our understanding of defect-engineered catalytic mechanisms, showcasing the potential for rapid and efficient enhancement of electrocatalytic performance.PMID:38659283 | DOI:10.1002/anie.202405372

Source: Angewandte Chemie - April 25, 2024 Category: Chemistry Authors: Yuhao Chen Jiang Xu Yujie Chen Luqi Wang Shuyun Jiang Zong-Han Xie Tianran Zhang Paul Munroe Shengjie Peng Source Type: research