Active Salt/Silica‐Templated 2D Mesoporous FeCo‐Nx‐Carbon as Bifunctional Oxygen Electrodes for Zinc–Air Batteries

Two types of templates, an active metal salt and silica nanoparticles, are used concurrently to achieve the facile synthesis of hierarchical meso/microporous FeCo‐Nx‐carbon nanosheets (meso/micro‐FeCo‐Nx‐CN) with highly dispersed metal sites. The resulting meso/micro‐FeCo‐Nx‐CN shows high and revers...

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Veröffentlicht in:Angewandte Chemie International Edition Jg. 57; H. 7; S. 1856 - 1862
Hauptverfasser: Li, Shuang, Cheng, Chong, Zhao, Xiaojia, Schmidt, Johannes, Thomas, Arne
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Weinheim Wiley Subscription Services, Inc 12.02.2018
Ausgabe:International ed. in English
Schlagworte:
Carbon
Catalysis
Electrodes
heteroatom doping
meso/microstructured carbon
Metal air batteries
Nanoparticles
Oxygen
Rechargeable batteries
reversible oxygen electrocatalysts
Silica
Silicon dioxide
Zinc-oxygen batteries
zinc–air batteries
ISSN:1433-7851, 1521-3773, 1521-3773
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Zusammenfassung:Two types of templates, an active metal salt and silica nanoparticles, are used concurrently to achieve the facile synthesis of hierarchical meso/microporous FeCo‐Nx‐carbon nanosheets (meso/micro‐FeCo‐Nx‐CN) with highly dispersed metal sites. The resulting meso/micro‐FeCo‐Nx‐CN shows high and reversible oxygen electrocatalytic performances for both ORR and OER, thus having potential for applications in rechargeable Zn–air battery. Our approach creates a new pathway to fabricate 2D meso/microporous structured carbon architectures for bifunctional oxygen electrodes in rechargeable Zn–air battery as well as opens avenues to the scale‐up production of rationally designed heteroatom‐doped catalytic materials for a broad range of applications. Meso/microporous Fe/Co‐Nx‐doped carbon nanosheets prepared by an active salt/silica nanoparticle templating approach achieve high performance as bifunctional oxygen electrodes. The FeCo‐Nx‐carbon has a well‐defined 2D morphology and homogenous metal‐atom doping, yielding enriched active sites for ORR‐OER. These features lead to excellent reversible oxygen electrocatalytic performance for Zn–air batteries.
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ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.201710852