Atomically Dispersed Semimetallic Selenium on Porous Carbon Membrane as an Electrode for Hydrazine Fuel Cells

作     者：Tongzhou Wang Qiang Wang Yucheng Wang Yunli Da Wu Zhou Yue Shao Debao Li Sihui Zhan Jiayin Yuan Hong Wang 

作者机构：Key Laboratory of Functional Polymer Materials (Ministry of Education) Institute of Polymer Chemistry College of Chemistry Nankai University Tianjin 300071 P. R. China State Key Laboratory of Coal Conversion Institute of Coal Chemistry The Chinese Academy of Sciences Taiyuan 030001 Shanxi P. R. China Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden School of Physical Sciences and CAS Centre for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 P. R. China Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education) College of Environmental Science and Engineering Nankai University Tianjin 300071 P. R. China 

出 版 物：《Angewandte Chemie》 

年 卷 期：2019年第131卷第38期

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Atomare Dispergierung Elektrokatalyse Hydrazinoxidation Poröse Kohlenstoffmembranen Selen 

摘      要：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.