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Metal–Phenolic Carbon Nanocomposites for Robust and Flexible Energy‐Storage Devices
Author(s) -
Oh Jun Young,
Jung Yeonsu,
Cho Young Shik,
Choi Jaeyoo,
Youk Ji Ho,
Fechler Nina,
Yang Seung Jae,
Park Chong Rae
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201601615
Subject(s) - supercapacitor , pseudocapacitance , materials science , nanocomposite , nanotechnology , carbon nanotube , energy storage , electronics , electrochemistry , capacitance , electrochemical energy storage , flexibility (engineering) , chemistry , electrode , power (physics) , physics , statistics , mathematics , quantum mechanics
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.