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Atomically Dispersed Semimetallic Selenium on Porous Carbon Membrane as an Electrode for Hydrazine Fuel Cells
Author(s) -
Wang Tongzhou,
Wang Qiang,
Wang Yucheng,
Da Yunli,
Zhou Wu,
Shao Yue,
Li Debao,
Zhan Sihui,
Yuan Jiayin,
Wang Hong
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201907752
Subject(s) - hydrazine (antidepressant) , electrochemistry , catalysis , materials science , membrane , carbon fibers , chemical engineering , electrochemical energy conversion , porosity , electrocatalyst , noble metal , metal , nanotechnology , electrode , inorganic chemistry , chemistry , organic chemistry , composite number , composite material , metallurgy , biochemistry , chromatography , engineering
Electrochemically functional porous membranes of low cost are appealing in various electrochemical devices used in modern environmental and energy technologies. Herein we describe a scalable strategy to construct electrochemically active, hierarchically porous carbon membranes containing atomically dispersed semi‐metallic Se, denoted SeNCM. The isolated Se atoms were stabilized by carbon atoms in the form of a hexatomic ring structure, in which the Se atoms were located at the edges of graphitic domains in SeNCM. This configuration is different from that of previously reported transition/noble metal single atom catalysts. The positively charged Se, enlarged graphitic layers, robust electrochemical nature of SeNCM endow them with excellent catalytic activity that is superior to state‐of‐the‐art commercial Pt/C catalyst. It also has long‐term operational stability for hydrazine oxidation reaction in practical hydrazine fuel cell.