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Ternary composite solid-state flexible supercapacitor based on nanocarbons/manganese dioxide/PEDOT:PSS fibres

García-Torres, José and Crean, Carol (2018) Ternary composite solid-state flexible supercapacitor based on nanocarbons/manganese dioxide/PEDOT:PSS fibres Materials & Design, 155. pp. 194-202.

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Abstract

Flexible fibre supercapacitors were fabricated by wet-spinning from carbon nanotube/carbon black dispersions, followed by straightforward surface treatments to sequentially deposit MnO2 and PEDOT:PSS to make ternary composite fibres. Dip coating the fibres after the initial wet-spinning coagulation creates a simple solution-based continuous process to produce fibre-based energy storage. Well-controlled depositions were achieved and have been optimised at each stage to yield the highest specific capacitance. A single ternary composite fibre exhibited a specific capacitance of 351 F g−1. Two ternary composite fibre electrodes were assembled together in a parallel solid-state device, with polyvinyl alcohol/H3PO4 gel used as both an electrolyte and a separator. The assembled flexible device exhibited a high specific capacitance of 51.3 F g−1 with excellent both charge-discharge cycling (84.2% capacitance retention after 1000 cycles) and deformation cycling stability (82.1% capacitance retention after 1000 bending cycles).

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
García-Torres, José
Crean, Carolc.crean@surrey.ac.uk
Date : 1 June 2018
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1016/j.matdes.2018.05.070
Copyright Disclaimer : © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Fibre supercapacitor; Carbon nanotube; Wet-spinning; Manganese oxides; PEDOT:PSS; Energy storage
Depositing User : Clive Harris
Date Deposited : 05 Jun 2018 10:02
Last Modified : 02 Jun 2019 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/846989

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