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Title: High-performance fiber-shaped supercapacitors using carbon fiber thread (CFT)@polyanilne and functionalized CFT electrodes for wearable/stretchable electronics
Authors: Jin, HY
Zhou, LM 
Mak, CL 
Huang, HT 
Tang, WM 
Chan, HLW 
Keywords: Functionalized carbon fiber thread
Asymmetric fiber-shaped supercapacitor
Wearable/stretchable electronics
Issue Date: 2015
Publisher: Elsevier
Source: Nano energy, 2015, v. 11, p. 662-670 How to cite?
Journal: Nano energy 
Abstract: Fiber-shaped supercapacitor (FSC) is a promising energy storage device for wearable/stretchable electronics by virtue of its unique features such as high flexibility, knittability, small-size and lightweight. However, the energy density of most FSC devices is limited by the relatively low operating voltage. Herein, we develop a solid-state asymmetric fiber-shaped supercapacitor made of carbon fiber thread@polyaniline and functionalized carbon fiber thread electrodes with high operating voltage (1.6 V). The as-prepared device shows a volumetric energy density up to 2 mWh cm(-3) which is higher than/compatible to most reported FSCs. The maximum power density of the device is 11 W cm(-3), which is comparable to typical commercial supercapacitors. Other than good rate capability, long cycle life and high volumetric capacitance, the proposed device has excellent flexibility. It can be embedded in a glove using a traditional weaving technology without degrading its capacitive performance at various bending conditions. To demonstrate the potential of our supercapacitor for stretchable electronics, we incorporate the device into a conventional elastic thread to form a stretchable supercapacitor. The capacitance of the stretchable device is well maintained even after stretching up to 100%, demonstrating its excellent stretchability. These promising results demonstrate the proposed supercapacitor has great potential as an efficient storage device for flexible and wearable electronics applications.
ISSN: 2211-2855
EISSN: 2211-3282
DOI: 10.1016/j.nanoen.2014.11.055
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