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Nitrogen‐Doped Carbon Vesicles with Dual Iron‐Based Sites for Efficient Oxygen Reduction
Author(s) -
Li Qianru,
Wan Gang,
Zhao Han,
Pan Linyu,
Wang Ning,
Zhao Wanpeng,
Zhou Xiaoxia,
Cui Xiangzhi,
Chen Hangrong
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201601396
Subject(s) - catalysis , carbon fibers , pyrolysis , oxygen reduction reaction , oxygen reduction , mesoporous material , nitrogen , chemistry , oxygen , inorganic chemistry , decomposition , doping , chemical engineering , materials science , organic chemistry , electrochemistry , optoelectronics , electrode , composite number , engineering , composite material
A nitrogen‐doped vesicle‐like porous carbon with well‐integrated dual iron‐based catalytic sites was developed through direct pyrolysis of inexpensive and abundant precursors. Benefiting from the mesoporous structures with synchronous construction of Fe–N x and Fe/Fe 3 C@NC sites, the optimized catalyst exhibited outstanding performance for the oxygen reduction reaction (ORR) in alkaline media, even superior to the commercial Pt/C catalyst. Detailed characterizations revealed that Fe/Fe 3 C@NC sites can make major catalytic contributions in basic media, whereas the Fe–N x sites were found to play an indispensable role for ORR in acidic media.