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Pyrolysis‐Free Synthesized Catalyst towards Acidic Oxygen Reduction by Deprotonation
Author(s) -
Zang Ying,
Mi Chunxia,
Wang Rui,
Chen Hong,
Peng Peng,
Xiang Zhonghua,
Zang ShuangQuan,
Mak Thomas C. W.
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202106661
Subject(s) - catalysis , pyrolysis , deprotonation , oxygen , chemistry , oxygen reduction reaction , process (computing) , chemical engineering , fuel cells , inorganic chemistry , combinatorial chemistry , organic chemistry , electrochemistry , computer science , electrode , ion , engineering , operating system
Acidic oxygen reduction is vital for renewable energy devices such as fuel cells. However, many aspects of the catalytic process are still uncertain—especially the large difference in activity in acidic and alkaline media. Thus, the design and synthesis of model catalysts to determine the active centers and the inactivation mechanism are urgently needed. We report a pyrolysis‐free synthesis route to fabricate a catalyst (CPF‐Fe@NG) for oxygen reduction in acidic conditions. By introducing a deprotonation process, we extended the oxygen reduction reaction (ORR) activity from alkaline to acidic conditions. CPF‐Fe@NG demonstrated outstanding performance with a half‐wave potential of 853 mV (vs. RHE) and good stability after 10000 cycles in 1 M HClO 4 . The pyrolysis‐free route could also be used to assemble fuel cells, with a maximum power density of 126 mW cm −2 . Our findings offer new insights into the ORR process to optimize catalysts for both mechanistic studies and practical applications.