Premium
Porous Carbon Membrane‐Supported Atomically Dispersed Pyrrole‐Type FeN 4 as Active Sites for Electrochemical Hydrazine Oxidation Reaction
Author(s) -
Wang YuCheng,
Wan LiYang,
Cui PeiXin,
Tong Lei,
Ke YuQi,
Sheng Tian,
Zhang Miao,
Sun ShuHui,
Liang HaiWei,
Wang YueSheng,
Zaghib Karim,
Wang Hong,
Zhou ZhiYou,
Yuan Jiayin
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202002203
Subject(s) - electrocatalyst , hydrazine (antidepressant) , electrochemistry , catalysis , heteroatom , materials science , carbon fibers , membrane , inorganic chemistry , chemical engineering , electrode , chemistry , organic chemistry , ring (chemistry) , biochemistry , chromatography , composite material , composite number , engineering
Abstract The rational design of catalytically active sites in porous materials is essential in electrocatalysis. Herein, atomically dispersed Fe‐N x sites supported by hierarchically porous carbon membranes are designed to electrocatalyze the hydrazine oxidation reaction (HzOR), one of the key techniques in electrochemical nitrogen transformation. The high intrinsic catalytic activity of the Fe‐N x single‐atom catalyst together with the uniquely mixed micro‐/macroporous membrane support positions such an electrode among the best‐known heteroatom‐based carbon anodes for hydrazine fuel cells. Combined with advanced characterization techniques, electrochemical probe experiments, and density functional theory calculation, the pyrrole‐type FeN 4 structure is identified as the real catalytic site in HzOR.