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Porous Carbon Membrane-Supported Atomically Dispersed Pyrrole-Type FeN4 as Active Sites for Electrochemical Hydrazine Oxidation Reaction.
Small ( IF 13.0 ) Pub Date : 2020-06-10 , DOI: 10.1002/smll.202002203
Yu-Cheng Wang 1 , Li-Yang Wan 2 , Pei-Xin Cui 3 , Lei Tong 4 , Yu-Qi Ke 1 , Tian Sheng 5 , Miao Zhang 1 , Shu-Hui Sun 6 , Hai-Wei Liang 4 , Yue-Sheng Wang 7 , Karim Zaghib 7 , Hong Wang 8 , Zhi-You Zhou 2 , Jiayin Yuan 1
Affiliation  

The rational design of catalytically active sites in porous materials is essential in electrocatalysis. Herein, atomically dispersed Fe‐Nx 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‐Nx 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 FeN4 structure is identified as the real catalytic site in HzOR.

中文翻译:

多孔碳膜负载的原子分散的吡咯型FeN4作为电化学肼氧化反应的活性中心。

多孔材料中催化活性位的合理设计对于电催化至关重要。本文中,由分层多孔碳膜支撑的原子分散的Fe-N x 位点被设计为电催化肼氧化反应(HzOR),这是电化学氮转化的关键技术之一。Fe‐N x 单原子催化剂的高固有催化活性以及独特的混合微/大孔膜载体将这种电极置于肼燃料电池最著名的基于杂原子的碳阳极之中。具有先进的表征技术,电化学探测试验,和密度泛函理论计算,吡咯型铁组合 Ñ 4 结构被确定为HzOR中的真正催化位点。
更新日期:2020-08-06
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