A wearable supercapacitor based on conductive PEDOT:PSS-coated cloth and a sweat electrolyte

Manjakkal, L. , Pullanchiyodan, A., Yogeswaran, N., Seyed Hosseini, E. and Dahiya, R. (2020) A wearable supercapacitor based on conductive PEDOT:PSS-coated cloth and a sweat electrolyte. Advanced Materials, 32(24), 1907254. (doi: 10.1002/adma.201907254) (PMID:32390218)

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Abstract

A sweat‐based flexible supercapacitor (SC) for self‐powered smart textiles and wearable systems is presented. The developed SC uses sweat as the electrolyte and poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the active electrode. With PEDOT:PSS coated onto cellulose/polyester cloth, the SC shows specific capacitance of 8.94 F g−1 (10 mF cm−2) at 1 mV s−1. With artificial sweat, the energy and power densities of the SC are 1.36 Wh kg−1 and 329.70 W kg−1, respectively for 1.31 V and its specific capacitance is 5.65 F g−1. With real human sweat the observed energy and power densities are 0.25 Wh kg−1, and 30.62 W kg−1, respectively. The SC performance is evaluated with different volumes of sweat (20, 50, and 100 µL), bending radii (10, 15, 20 mm), charging/discharging stability (4000 cycles), and washability. With successful on‐body testing, the first demonstration of the suitability of a sweat‐based SC for self‐powered cloth‐based sensors to monitor sweat salinity is presented. With attractive performance and the use of body fluids, the presented approach is a safe and sustainable route to meet the power requirements in wearable systems.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Pullanchiyodan, Mr Abhilash and Yogeswaran, Mr Nivasan and Dahiya, Professor Ravinder and Seyed Hosseini, Dr Ensieh and Manjakkal, Dr Libu
Authors: Manjakkal, L., Pullanchiyodan, A., Yogeswaran, N., Seyed Hosseini, E., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Advanced Materials
Publisher:Wiley
ISSN:0935-9648
ISSN (Online):1521-4095
Published Online:11 May 2020
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Advanced Materials 32(24): 1907254
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
170185Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering and Physical Sciences Research Council (EPSRC)EP/M002527/1ENG - Electronics & Nanoscale Engineering
301728Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering and Physical Sciences Research Council (EPSRC)EP/R029644/1ENG - Electronics & Nanoscale Engineering
303806FULLY PRINTED FABRIC BASED FLEXIBLE AND SELF HEALING SUPERCAPACITORRavinder DahiyaThe Royal Society (ROYSOC)NIF/R1/182437ENG - Electronics & Nanoscale Engineering