Journal
CHEMELECTROCHEM
Volume 1, Issue 7, Pages 1182-1188Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201402022
Keywords
hybrid supercapacitors; metal-organic frameworks; nanotubes; organic-inorganic hybrid composites; supercapacitors
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Funding
- Instituut voor Innovatie door Wetenschap en Technologie (IWT)
- European Commission
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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.
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