Insight into the Mechanism of Axial Ligands Regulating the Catalytic Activity of Fe–N4 Sites for Oxygen Reduction Reaction

• Published in: Advanced energy materials Vol. 12; no. 11
• Main Authors: Zhao, Kuang‐Min, Liu, Suqin, Li, Yu‐Yang, Wei, Xianli, Ye, Guanying, Zhu, Weiwei, Su, Yuke, Wang, Jue, Liu, Hongtao, He, Zhen, Zhou, Zhi‐You, Sun, Shi‐Gang
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.03.2022
• Subjects: Activity recognition; axial ligands; Catalytic activity; electrocatalysis; Electrocatalysts; Energy levels; Fe–N–C; Field strength; in‐situ spectroscopy; Iron; Ligands; Metal phthalocyanines; orbital configuration; Oxygen reduction reactions; Tuning

Identifying the actual structure and tuning the catalytic activity of Fe–N4‐based moieties, well‐recognized high‐activity sites in the oxygen reduction reaction (ORR) are challenging problems. Herein, by using poly(iron phthalocyanine) (PFePc) as an Fe–N4‐based model electrocatalyst, a mechanistic i...