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Multilayered Flexible Fibers with High Performance for Wearable Supercapacitor Applications

Garcia-Torres, Jose and Crean, Carol (2017) Multilayered Flexible Fibers with High Performance for Wearable Supercapacitor Applications Advanced Sustainable Systems, 2 (2), 1700143.

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Abstract

Multilayered flexible fibers, consisting of carbon black-carbon nanotube fibers, manganese oxides and conducting polymers, were fabricated for use as electrodes in supercapacitors. Carbon-based fibers were initially prepared by wet-spinning using carbon-based nanomaterials (carbon black and carbon nanotubes) and chitosan as a matrix. Subsequent coatings with manganese oxides and conducting polymers form a multilayered structure. Different MnO2 crystalline structures (ε-MnO2, γ-MnO2) were grown onto the fibre by electrodeposition and different conducting polymers (polyethylenedioxythiophene and polypyrrole) used as a conductive wrapping. Each layer improved the performance of the fibre by adding different functionalities. While MnO2 improved the capacitance of the fibre, the presence of conducting polymers creates a conductive network increasing the capacitance further and conferring cycling stability. Capacitance values up 600 F g-1 and capacitance retention of 90% can be achieved with these multilayered hybrid fibers. A symmetric supercapacitor device, prepared from two hybrid fibres showed no significant change in properties when the device was bent, demonstrating their potential in flexible electronic devices and wearable energy systems.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Garcia-Torres, Jose
Crean, Carolc.crean@surrey.ac.uk
Date : 27 December 2017
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Identification Number : 10.1002/adsu.201700143
Copyright Disclaimer : © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Uncontrolled Keywords : Carbon nanomaterials; Conducting polymers; Manganese oxides; Multilayered flexible fibers; Supercapacitors
Depositing User : Clive Harris
Date Deposited : 08 Feb 2018 13:28
Last Modified : 13 Mar 2018 15:50
URI: http://epubs.surrey.ac.uk/id/eprint/845781

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