A Hybrid Supercapacitor based on Porous Carbon and the Metal‐Organic Framework MIL‐100(Fe)

Composite supercapacitor electrodes based on carbon nanotubes, carbon black, and a metal–organic framework with iron(III) coordination centers [MIL‐100(Fe), MIL‐88B(Fe), or MIL‐53(Fe)] were prepared and tested with several aqueous electrolytes. A correlation between hydrated ion size and the electri...

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Bibliographic Details
Published in:ChemElectroChem Vol. 1; no. 7; pp. 1182 - 1188
Main Authors: Campagnol, Nicolò, Romero‐Vara, Ricardo, Deleu, Willem, Stappers, Linda, Binnemans, Koen, De Vos, Dirk E., Fransaer, Jan
Format: Journal Article
Language:English
Published: Weinheim WILEY‐VCH Verlag 15.07.2014
John Wiley & Sons, Inc
Subjects:
Aqueous electrolytes
Capacitors
Carbon
Carbon nanotubes
Electrodes
Electrolytes
Energy storage
hybrid supercapacitors
Metal-organic frameworks
nanotubes
organic–inorganic hybrid composites
Supercapacitors
ISSN:2196-0216, 2196-0216
Online Access:Get full text
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Summary:Composite supercapacitor electrodes based on carbon nanotubes, carbon black, and a metal–organic framework with iron(III) coordination centers [MIL‐100(Fe), MIL‐88B(Fe), or MIL‐53(Fe)] were prepared and tested with several aqueous electrolytes. A correlation between hydrated ion size and the electric response of the electrodes was found, which sheds light on how these materials work as energy‐storage devices. MIL‐100(Fe) shows the most promising results, and the capacitance obtained with the samples in the solutions used is higher than that of a mixture of carbon and nanotubes in the same solution. Unfortunately, shortcomings due to reductive dissolution still hamper the long‐term cyclability of the electrodes. Charged and ready: Composite supercapacitor electrodes based on metal–organic frameworks and carbon nanotubes are tested with environmentally friendly electrolytes. The energy‐storage mechanism followed by these materials is explored and explained, and promising results are obtained with the electrodes.
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ISSN:2196-0216
2196-0216
DOI:10.1002/celc.201402022