期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 38, 页码 13466-13471出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201907752
关键词
atomically dispersed; electrocatalysis; hydrazine oxidation; porous carbon membranes; selenium
资金
- Nankai University
- National Science Foundation of China [21875119]
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences [J19-20-610]
- ERC [NAPOLI-639720]
- Wallenberg Academy Fellow program [KAW 2017.0166]
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.
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