Journal
CHEMSUSCHEM
Volume 10, Issue 8, Pages 1675-1682Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201601615
Keywords
carbon; iron; mechanical properties; nanotubes; supercapacitors
Funding
- National Research Foundation of Korea(NRF) - Korea government(MSIP) [NRF-2016R1C1B2010772, NRF-2016R1E1A2A01939825]
- INHA UNIVERSITY Research Grant [INHA-52563]
- Carbon Valley R&D Project - Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea [R0000689]
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Future electronics 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, whereas the trade-off between the required nanostructures for strength and electrochemical performance only results in diminished energy storage. Herein, a flexible supercapacitor based on tannic acid (TA) and carbon nanotubes (CNTs) with a unique nanostructure is presented. TA was 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 17-fold increased mechanical strength of the final composite, the hybrid film simultaneously exhibits excellent flexibility and volumetric capacitance.
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