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Journal Article

Metal–phenolic carbon nanocomposites for robust and flexible energy-storage devices


Fechler,  Nina
Nina Fechler, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Oh, J. Y., Jung, Y., Cho, Y. S., Choi, J., Youk, J. H., Fechler, N., et al. (2017). Metal–phenolic carbon nanocomposites for robust and flexible energy-storage devices. ChemSusChem, 10(8), 1675-1682. doi:10.1002/cssc.201601615.

Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-38AC-5
Future electronic applications such as wearable electronics depend on the successful construction of energy storage devices with superior flexibility and high electrochemical performance. However, these prerequisites are challenging to combine: external forces often cause performance degradation while the trade-off between the required nanostructures for strength and electrochemical performance results only in energy storage. In this paper, we present a flexible supercapacitor design based on tannic acid (TA) and carbon nanotubes (CNTs) with a unique nanostructure. Here, TA is self-assembled on the surface of the CNTs by metal-phenolic coordination bonds which provides the hybrid film with both, high strength and high pseudocapacitance. Besides a 17 times increased mechanical strength of the final composite, the hybrid film simultaneously exhibits excellent flexibility and volumetric capacitance.