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Atomically Dispersed Semi-Metallic Selenium on Porous Carbon Membrane as an Electrode for Hydrazine Fuel Cells
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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Number of Authors: 102019 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 58, no 38, p. 13466-13471Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2019. Vol. 58, no 38, p. 13466-13471
Keywords [en]
atomically dispersed, electrocatalysis, hydrazine oxidation, porous carbon membranes, selenium
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-173020DOI: 10.1002/anie.201907752ISI: 000479614500001PubMedID: 31268612OAI: oai:DiVA.org:su-173020DiVA, id: diva2:1358226
Available from: 2019-10-07 Created: 2019-10-07 Last updated: 2019-10-07Bibliographically approved

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Wang, YuchengYuan, Jiayin
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