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An 2D Polymer Used As Ingredient of Fe/N/C Composite Towards Oxygen Reduction Catalyst In Acidic Medium.
Author(s) -
Wang Yefei,
Fu Dengke,
Fu Yuanyuan,
Yu Yue,
Zhou Junhao,
Guo Changding,
Ma Jun,
Li Kai,
Zheng Lirong,
Zuo Xia
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201803628
Subject(s) - catalysis , oxygen , ferric , carbon fibers , polymer , chemistry , nitrogen , amorphous solid , transition metal , inorganic chemistry , pyrolysis , chloride , oxygen reduction , metal , glass transition , electrochemistry , materials science , composite number , organic chemistry , composite material , electrode
Carbon‐based transition metal/nitrogen material is one of the most promising non‐precious metal catalysts for the oxygen reduction reaction. And N‐containing polymers are considered as a kind of excellent N precursor because they are more likely to form ordered and stable carbon‐based active layer during heat treatment. However, further research is still needed due to the inferior oxygen reduction catalytic activity compared with Pt in acidic condition. Herein, we design the Fe/N/C catalyst through synthesize a special nitrogen‐rich polymer poly‐hexaazatrinaphthylene as N source and subsequently calcine with the mixture of ferric chloride and Vulcan XC‐72. The physical results indicate that the oxygen reduction catalytic activity is mainly related to the amorphous carbon, pyridinic‐N, and Fe‐N 4 coordination geometry. Electrochemical tests indicated that the sample pyrolyzed at 800°C presents relative high oxygen reduction activity in 0.5 mol L −1 H 2 SO 4 via an efficient four‐electron‐dominant pathway.